最新刊期
卷 39 ， 期 6 ， 2026
- 摘要：Poly(methyl vinyl ether-alt-maleic anhydride) (PMVEMA), a water-soluble polymer, exhibits the typical characteristics of electrolyte polymers and offers advantages such as an easily modifiable structure, excellent adhesive properties, and biocompatibility. Therefore, PMVEMA has been widely utilized in studies of high value-added fields. This article introduces the structure-property relationships, industrial synthesis methods, and current problems associated with PMVEMA. Moreover, focusing on the structural modification and functional role of PMVEMA, this review systematically reviewed its research progress in the fields of batteries, environmental protection, and biomedical applications in recent years, including lithium-ion batteries, perovskite solar cells, wastewater treatment, pesticide degradation, bioimaging, drug delivery, skin patches, and antibacterial materials. On this basis, combined with various fields, this review further explores the current challenges and future development directions of PMVEMA in industrial applications. We hope that this review can provide a reference and inspiration for the industrialization study and application of PMVEMA.关键词：Poly(methyl vinyl ether-alt-maleic anhydride);Polymer electrolyte;Adhesive property;Biomedical applications204|100|0更新时间：2026-05-29
- 摘要：As one of the most promising bio-based and biodegradable polymers for industrialization, supercritical fluid foaming technology using poly(lactic acid) (PLA) has emerged as a key pathway for achieving lightweight and functional applications. Recent research progress on supercritical fluid (primarily supercritical CO2, scCO2) foamed PLA materials is systematically reviewed, with focus on three core directions: bulk modification strategies, formulation compounding technologies, and foaming process innovations. By summarizing representative research findings and integrating the current application status of foamed PLA, this review analyzes the existing technical bottlenecks and outlines future development trends, providing theoretical support and practical guidance for the development of high-performance biodegradable foam materials.关键词：Poly(lactic acid);Supercritical fluid foaming;Biodegradable polymers158|154|0更新时间：2026-05-29
- 摘要：Diels-Alder bonded polyurethane covalent adaptable networks (PUDA) were synthesized and pulverized to prepare PUDA powders for selective laser sintering (SLS) 3D printing. SiO2 nanoparticles and hollow glass microspheres (HGM) were used as glidants to modify the PUDA powder. The modified composite powder fluidity, thermal properties, sintering behavior, and mechanical and self-repairing properties of SLS printed parts were systematically investigated. The results show that when 0.2 wt% SiO2 and 0.5 wt% HGM are added together, the static angle of repose of the PUDA powder decreases from 54.7° to 29.5°, the basic flow energy decreases, the bulk density increases, and the fluidity is close to free flow. The composite powder can be successfully SLS sintered, and the minimum apparent porosity of the printed parts is 5.09%, and the tensile strength is 14.54 MPa, which is 36.6% higher than that prepared with the single additive system. In addition, the self healing efficiency reaches 124%−126% after 2 h of repair at 120 ℃. The use of glidants can improve the SLS 3D printing of polymers and can be extended to other polymer powders.关键词：Polyurethane;Dynamic bond;Powder fluidity;Selective laser sintering76|10|0更新时间：2026-05-29
- 摘要：Polymer materials have gradually replaced metals as the most important raw materials in the pipe production industry, leading to increasingly stringent requirements for pipe quality. However, improving pipe performance solely by modifying the chemical structure of polymers or incorporating fillers such as glass fiber and carbon fiber can no longer fully meet these demands. Taking poly(phthalazinone ether sulfone ketone) (PPESK) as an example, this study modifies a conventional extruder head by incorporating an annular expansion strengthening device, analogous to the principle of film blowing, to enhance pipe strength. The annular expansion effect of the designed extruder head is simulated and analyzed using Ansys-Polyflow. At an expansion angle of 30°, a suitable annular expansion velocity component of 3.51 cm/s is obtained, under which the melt maintains favorable flow characteristics without significant vortex or stagnation. The velocity component in the annular expansion direction causes the molecular chains within the melt to deviate from their original flow direction and form an orientation along the axial direction, thereby improving the circumferential stress resistance of the pipe.关键词：Design of extruder head;Annular strengthening;Finite element simulation;Composite material pipe preparation;Extrusion molding62|15|0更新时间：2026-05-29
- 摘要：Viscoelastic polymer materials, characterized by their unique combination of viscous and elastic rheological properties, are considered ideal for direct ink writing (DIW) 3D printing. However, systematic analysis of polymer materials with complex rheological behavior remains insufficient. This study systematically investigates the influence mechanisms of elasticity and printing speed on the DIW 3D printing process of viscoelastic polymer materials, with a focus on elucidating the intrinsic relationship between high elasticity, localized stress concentration, excessive molecular chain deformation, and eventual filament fracture. Furthermore, it provides an in-depth analysis of how increasing printing speed elevates residual stress near the wall region and how the growth rate of the maximum residual stress within the cross-section gradually decreases with enhanced material elasticity and stretching effects. The findings offer critical insights into the stress evolution and structural transformation during the extrusion and deposition of viscoelastic polymer materials, providing clear guidance for optimizing printing parameters and mitigating forming defects.关键词：Polymer material processing;Direct ink writing;Viscoelasticity;Residual stress;High-precision numerical simulation77|13|0更新时间：2026-05-29
- 摘要：The self-assembly characteristics of active layer materials in organic solar cells (OSCs) are crucial for achieving an ideal active layer morphology and excellent photovoltaic performance. In this work, two novel poly(thiophene-quinoxaline) (PTQ) derivatives were synthesized by introducing a third component with different side chains into the backbone of polymer donor PTQ10, and the influence of side chain structure on the optoelectronic properties, molecular aggregation behavior, and photovoltaic performance for polymer materials was investigated in detail. Compared with PTQ10, the length and type of alkoxy side chains in the third component has little effect on the electrochemical and optical properties of PTQ derivatives, but significantly impacts their self-assembly characteristics and packing orientation. Benefiting from the tighter and more long-range ordered molecular packing properties, devices based on PTQ21 achieve higher and more balanced charge mobility, more efficient exciton dissociation and charge collection processes, ultimately realizing an outstanding efficiency of 19.22%. This work confirms the importance and feasibility of side-chain engineering for finely tuning the self-assembly behavior of polymer materials, and provides significant reference value and guidance for the future development of novel polymer donor materials with the merits of low cost and high performance.关键词：Side-chain engineering;Molecular self-assembly;Polymer donors;Organic solar cells84|10|0更新时间：2026-05-29
- 摘要：The melt flow index (MFI) of low-density polyethylene (LDPE) significantly affects its crosslinking characteristics and the properties of crosslinked polyethylene (XLPE). However, owing to the difficulty in obtaining LDPE samples with gradient MFI values as the sole variable, the literature lacks direct evidence regarding the influence of the MFI of LDPE on its crosslinking characteristics and the performance of the resulting XLPE. Herein, based on five LDPE samples with gradient MFI values, a series of LDPE/crosslinking agent compounds were prepared and crosslinked to obtain XLPE using a rotorless rheometer and a flat-plate vulcanizing machine. The crosslinking characteristics of LDPE and the structure-property relationships of the resulting XLPE were systematically investigated. The results indicated that lowering the MFI of LDPE would lead to an extended scorch time (t10), while showing no significant effect on the curing time (t90). Both the crosslinking degree (Dc) and the average number of crosslinking points per polymer chain (γ) in XLPE monotonically decreased as the MFI of LDPE increased. Mechanical property tests showed that both the tensile strength of XLPE and the resistance to creep monotonically enhanced with an increase in the Dc of XLPE. Meanwhile, the melting temperature of XLPE decreases with a reduction in the degree of crosslinking. This study established a mapping relationship among the MFI of LDPE, the microstructural parameters of XLPE, and the macroscopic performance of XLPE, providing a reference for rationally designing the MFI of LDPE and enhancing the comprehensive performance of XLPE.关键词：Low-density polyethylene;Crosslinked polyethylene;Crosslinking degree;Melt flow index116|81|0更新时间：2026-05-29
- 摘要：Hydrogels exhibit great application potential in wearable biosensing owing to their excellent biocompatibility and tunable physicochemical properties. However, developing hydrogel sensing materials with integrated excellent mechanical properties, high sensing sensitivity, stable interfacial adhesion and favorable electrical conductivity remains a critical challenge. To address these issues, a flexible sensor based on polyacrylamide/tannic acid/MXene (PAM/TA/MXene, PTM) composite hydrogel is designed and fabricated in this work. In this system, multiple dynamic hydrogen bonds are formed among the phenolic hydroxyl groups of TA, the hydroxyl/oxygen terminals on the MXene surface, and the amide groups of PAM, constructing a reinforced cross-linked network that synergistically optimizes the mechanical properties, adhesion, and electrical conductivity of the material. The PTM hydrogel demonstrates outstanding stretchability (strain > 1200%), high sensitivity (maximum gauge factor (GF) of 0.61), and millisecond-level response/recovery capability; TA endows it with robust adhesion to the skin and various substrates. This sensor integrates high-fidelity monitoring of human body movements and micro-expressions with high-quality acquisition of electrocardiogram (ECG) and electromyogram (EMG) signals, and its signal-to-noise ratio (SNR) in dynamic environments outperforms that of commercial hydrogel electrodes. This study provides a feasible material solution for high-performance wearable sensing systems applied in medical monitoring and human-machine interaction.关键词：Composite hydrogel;Flexible sensor;Bioelectrical signals;MXene;Tannic acid119|75|0更新时间：2026-05-29
- 摘要：Traumatic hemorrhage remains a major clinical challenge, underscoring the urgent need for the development of novel materials that combine excellent hemostatic efficacy with good biosafety. Based on the medicinal potential of Poria cocos alkali-soluble polysaccharide (PCAP) and its gelation potential as a β-glucan, this study utilized the commonly discarded natural polysaccharide PCAP as the raw material to prepare a series of sponges with PCAP concentration gradients of 10–100 g/L via freeze-drying. Based on morphological integrity, 50–100 g/L was identified as the effective formable concentration range. Scanning electron microscopy (SEM) images revealed that the PCAP sponges exhibited a three-dimensional porous structure, while physical performance tests demonstrated favorable water absorption capacity, water retention rate, and water vapor transmission rate. In vitro coagulation and hemolysis experiments confirmed the significant pro-coagulant activity and excellent hemocompatibility of the PCAP sponges. In vivo hemostatic performance evaluated using mouse tail amputation and liver incision models indicated optimal hemostatic efficacy at a PCAP concentration of 70 g/L. Activated partial thromboplastin time (APTT) and prothrombin time (PT) assay indicated that PCAP sponges prolonged APTT and shortened PT, suggesting a dual modulatory effect on both the intrinsic and extrinsic coagulation pathways. Histopathological analysis revealed no significant inflammatory response, indicating good tissue compatibility. These results demonstrate that PCAP-based sponges exhibit favorable comprehensive properties in terms of hemostatic performance, physicochemical characteristics, and biocompatibility. They show potential application value as a natural polysaccharide-based hemostatic sponge dressing, providing a new strategy for developing green and safe hemostatic dressings.关键词：Poria cocos alkali-soluble polysaccharide;Hemostasis;Sponge;Natural polysaccharide70|47|0更新时间：2026-05-29
- 摘要：Poly(lactic acid)/β-tricalcium phosphate (PLA/β-TCP) composite Gyroid porous bone scaffolds were fabricated via a melt compounding–filament extrusion–FDM 3D printing route. The effects of β-TCP content (0 wt%–20 wt%) on mechanical properties, in vitro degradation behavior, and cytocompatibility were systematically investigated. The results show that β-TCP markedly enhances the stiffness and load-bearing capacity of the composites: the tensile strength of printed specimens increased from 52.3 MPa to 74.9 MPa at 15 wt% β-TCP, and the tensile modulus rose from 2.12 GPa to 3.15 GPa, accompanied by a decrease in elongation at break from 6.4% to 2.6%, indicating strengthening with a certain degree of embrittlement. The compressive response exhibits a typical three-stage behavior—elastic region, plateau region, and densification—with both plateau stress and energy absorption increasing as β-TCP content rises. During in vitro degradation, the mass loss after 4 weeks increased from (6.8±0.7)% for PLA to (12.7±1.1)% for the 20 wt% β-TCP composite; meanwhile, β-TCP provided a pronounced buffering effect against acidification, with the immersion medium pH at 4 weeks increasing from 6.62±0.06 (PLA) to 7.15±0.06 (20 wt% β-TCP). Cell studies demonstrate that the composite scaffolds exhibit no evident cytotoxicity and promote cell proliferation: at day 5, the optical density (OD450) values increased from 0.95 (PLA) to 1.10–1.15 for the 10 wt%–15 wt% β-TCP groups, and live/dead staining showed predominantly viable cells with good spreading. Overall, a β-TCP content of 10 wt%–15 wt% provides an optimal balance among mechanical performance, degradation behavior, and biological response, offering a promising strategy for the design of biodegradable bone repair scaffolds.关键词：Poly(lactic acid);β-Tricalcium phosphate;3D printing;Porous bone scaffold77|38|0更新时间：2026-05-29
- 摘要：Hydroxyl-terminated polybutadiene polyurethane (HTPB-PU) is one of the binders widely used in solid propellants at present. Although it has to withstand the high internal pressure during the ignition phase, there is still a lack of research on the microstructure and mechanical properties of HTPB-PU under high confining pressure. In this work, the tensile mechanical properties of a soft HTPB-PU under different confining pressures (0–6.0 MPa) and initial tensile strain rates (0.0075–0.3750/s) were tested by using a self-made tensile experiment system equipped with high confining pressure device. Combined with different microstructure characterization methods, the coupling effects of confining pressure and strain rate on the tensile failure behavior and mechanical properties of HTPB-PU were analyzed. The results showed that the tensile mechanical parameters of HTPB-PU increased with increasing strain rate, while the confining pressure reduced the strain rate sensitivity of the tensile property of the fabricated HTPB-PU. Applying confining pressure can enhance microphase separation, and suppress the plastic deformation in HTPB-PU, thus improving its elastic modulus, yield strength, and tensile strength and elongation at low strain rate (0.0075/s). At high strain rates (0.0750/s and 0.3750/s), the tensile strength and elongation decrease with increasing confining pressure due to the rapid development of plastic deformation in the local stress concentration region owing to the high stress level within HTPB-PU. Finally, the models of elastic modulus and yield stress of the fabricated HTPB-PU were established based on the time-pressure superposition principle and experimental data. The calculation showed that the established model could accurately predict the elastic modulus and yield stress of HTPB-PU under different confining pressures and strain rates.关键词：Hydroxyl-terminated polybutadiene polyurethane;Confining pressure;Strain ratel;Fracture mechanism;Constitutive model82|31|0更新时间：2026-05-29
- 摘要：Carbon black serves as an irreplaceable reinforcing filler in the rubber industry. The trade-off between its hysteretic behavior and abrasion resistance represents a critical bottleneck limiting the performance of new energy vehicle (NEV) tires. In this work, we synergistically tuned the key parameters of carbon black's intrinsic structure and innovatively developed a theoretical framework for the balanced structural design of carbon black. A low-hysteresis, high-abrasion carbon black (denoted as RX001) was synthesized and incorporated into rubber compounds. Performance characterization results demonstrate that RX001 enables the synergistic enhancement of low heat buildup and high abrasion resistance, with exceptional performance in sustainable formulations: the 60 ℃ tanδ (a proxy for hysteresis) of RX001 is 8.7% lower than that of the commercial foreign benchmark E7 and 10% lower than that of N234; the DIN abrasion loss is reduced by 21.7% (versus N234) and 15.3% (versus E7); the Akron abrasion volume is decreased by 25.0% (versus N234) and 33.3% (versus E7), respectively. RX001 features abundant microcrystalline structures and a rough topological morphology, which remarkably strengthens the interfacial bonding interaction between carbon black and rubber, thus achieving the synergistic enhancement of low heat build-up and high abrasion resistance properties.关键词：Carbon black;Low hysteresis;High abrasion;Rubber;Balanced structural design85|74|0更新时间：2026-05-29
- 摘要：In the context of accelerating the construction of an innovative country and focusing on breaking through the “knockout” problems in high-tech fields, enhancing the innovation ability of graduate students has become the core task of higher education. In response to current issues such as unclear learning goals for material science graduate students, the constraints of traditional educational models on innovative spirit, and the imperfect mechanism for cultivating practical abilities, the functional elastomer research group of Donghua University has conducted continuous exploration for ten years and has constructed a graduate student innovation ability cultivation model based on the “dynamic development concept of materials science” as the training philosophy. This model is guided by “comprehensive virtue and talent”, and through a three-dimensional progressive training system of “education and teaching−industry-academia practice−scientific research”, it integrates multiple paths such as curriculum ideological education, scientific and educational collaboration, joint cultivation through university-industry cooperation, and collaborative management and development of platforms and instruments, and implements the “three 100%” training principles to comprehensively enhance the innovative thinking and practical abilities of graduate students. Practice has shown that this model provides a replicable practical model for the innovation cultivation of material science graduate students and is of great significance for promoting the precise alignment of higher education with industrial demands and contributing to the construction of a material power country.关键词：Materials science;Dynamic development perspective;Postgraduate training model;Integration of science and education;Multi-dimensional and full process85|43|0更新时间：2026-05-29
- 摘要：With the development of society, the trend of cross-disciplinary integration is becoming increasingly evident, and the advancement of science and technology requires more scientific researchers who are proficient in cross-disciplinary knowledge. The field of biomedical polymer materials has a strong interdisciplinary nature, and students in this field need to possess knowledge in polymer materials, biology, and medicine. As the cradle for cultivating high-end talents and an important place for conducting scientific research, universities need to shoulder the responsibility of cultivating interdisciplinary talents. This article focuses on the cultivation methods for students in the field of biomedical polymer materials in universities. It will explore the cultivation strategies in a university environment from aspects such as cross-disciplinary training models, systematic scientific research training, project-based cultivation, and incentives for the industrial transformation of scientific research achievements, providing references for the cultivation of students in this field in the new era.关键词：University student cultivation;Interdisciplinary integration;Medicine-engineering combination;Project-based training;Biomedical polymers76|54|0更新时间：2026-05-29
- 摘要：Experimental teaching plays a crucial role in undergraduate training in polymer science. Integrating cutting-edge academic concepts into experimental teaching serves as an effective approach to enhance students’ comprehensive innovative capabilities. A comprehensive polymer experiment based on the synthesis and performance characterization of donor-acceptor benzodithiophene-based polymers was designed. The experiment mainly employs Stille coupling polycondensation to synthesize conjugated polymers with tunable bandgap characteristics. The thermal stability, absorption spectra, energy levels, and contact angles of the resulting polymers were characterized by utilizing various analytical techniques. By closely integrating synthesis with property characterization, the students can acquire more comprehensive understanding on the core concept of “structure determines properties”, and their research literacy and innovative capability are also further improved.关键词：Experimental teaching;Benzodithiophene;Polymer;Comprehensive experiment;Innovative capability105|56|0更新时间：2026-05-29
- 摘要：To overcome the drawbacks of conventional supercapacitor preparation, which involves complicated and time-consuming procedures that are difficult to complete within limited class hours, a comprehensive laboratory project entitled “in situ rapid integration and applications of flexible supercapacitors” is developed for undergraduate students majoring in polymer science and engineering. The experiment employs aldehyde-amine condensation to achieve rapid sol-gel transition within 5 min at room temperature, and the supercapacitor is further constructed viain situ integration, delivering a specific capacitance of up to 105.4 F/g, which greatly improves the efficiency of experimental teaching. The project covers hydrogel synthesis, device assembly, performance measurement and application demonstration, integrating interdisciplinary knowledge of polymer chemistry, polymer physics and electrochemistry. Through systematic implementation, students’ practical skills, analytical ability and interdisciplinary thinking are cultivated, and the understanding of cutting-edge developments in related fields is enhanced, demonstrating favorable teaching effects.关键词：Experimental design;Teaching methodology;Supercapacitor;Hydrogel;In situ integration65|26|0更新时间：2026-05-29
- 摘要：Against the strategic backdrop of the country advancing new industrialization and developing advanced manufacturing industries, Shandong University of Petroleum and Chemical Technology, as a local application-oriented university, aims to cultivate application-oriented talent as its core goal. To align with the development needs of key industries in Dongying City and to strengthen students’ abilities to integrate theory with practice and engage in innovative experimentation, the applied chemistry major of the university launched the course “Open Innovation Experiments” constructed a project-based teaching model, and explored new pathways for talent cultivation through the integration of industry-education and science-education. Taking the project “preparation and breakdown performance characterization of hyperbranched polyimide” as an example, the project takes the acid-amine condensation reaction from the “Organic Chemistry” course and the X-ray diffraction analysis from the Instrumental Analysis course as its core knowledge components and adopts the implementation path of “laboratory preparation and characterization + application performance comparison + mechanism simulation”. First, students were guided to complete the preparation and characterization of hyperbranched polyimide films in the laboratory. Second, students were led to explore the influence of test conditions on test results in a collaborative enterprise. Finally, it digs deep into the internal mechanism of how test conditions affect test results was investigated through multiphysics simulation, realizing the in-depth connection between scientific research, teaching practice, and industrial needs. The project implementation not only effectively improves students’ ability to solve practical industrial problems but also provides a referable practical paradigm for science and engineering majors in application-oriented universities to deepen teaching reform, practice industry-education integration and science-education integration, and cultivate high-quality applied talents.关键词：Industry-education integration;Science-education integration;Project-based teaching;Hyperbranched polyimide;Breakdown performance85|76|0更新时间：2026-05-29
- 摘要：“Plastic Processing Technology” course occupies a core position in the curriculum of the polymer materials and engineering major. Traditional teaching methods have the problem of insufficient connection between theory and practice, making it difficult to achieve ideal results. Therefore, problem-driven teaching methods are introduced into “Plastic Processing Technology” course. Based on the authors’ years of teaching practice experience, the design is carried out from two aspects: selection of content and design of problems. The teaching content is divided into three major modules: process physics and chemistry, raw material selection and configuration, and major molding processes, focusing on the relationship between plastics, plastic parts, equipment, and processes, and making appropriate choices. The design of problems involves setting a large question for each class, introducing necessary knowledge points around completing it, and then using small questions for classroom discussions to test learning effectiveness. By continuously improving teaching design and closely linking key molding technology issues with theoretical knowledge, it is preliminarily indicated that the teaching effectiveness of “Plastic Processing Technology” courses can be significantly enhanced.关键词：Plastic processing;Problem-driven teaching;Teaching design64|60|0更新时间：2026-05-29
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