摘要:Macroporous hydrogels, characterized by interconnected micron-scale pores, offer superior mass transport, high loading capacity, and programmable microenvironments, enabling broad applications in drug delivery, 3D cell culture, and tissue engineering. This review summarizes major fabrication strategies for macroporous hydrogels, including solid templating, gas foaming, cryogelation, phase separation, and 3D printing. The mechanisms and controllability of pore size, porosity, and interconnectivity across different methods are systematically compared. In addition, we highlight representative design principles for modulating hydrogel mechanics, incorporating bioactive molecules, and engineering pore-level microenvironments. These advances demonstrate how macroporous architectures enhance cellular infiltration, nutrient exchange, and spatiotemporal biochemical signaling, thereby supporting the construction of biomimetic model systems and promoting tissue regeneration. This review provides a comprehensive framework for guiding structural design and functional optimization of macroporous hydrogels in emerging biomedical applications.
摘要:Blending modification of polylactide (PLA) and polyhydroxyalkanoates (PHA) is an effective strategy to improve the overall performance of biodegradable materials. The major research progress in PLA/PHA blending modification in recent years is systematically reviewed in this article. The introduction of PHA can significantly overcome the inherent limitations of PLA, such as its poor toughness and slow crystallization rate. To further enhance the blend system, modification methods such as compatibilization, plasticization, and reinforcement are employed. These approaches improve interfacial compatibility, mechanical properties, and degradation behavior, ultimately expanding its application scope. This work aims to establish a theoretical basis and provide technical guidance for developing high-performance PLA/PHA blend materials.
摘要:Polytrifluorostyrene (PTFS) represents a distinctive class of fluorinated polymers. The fully fluorinated backbone confers exceptional thermal and chemical stability, while the pendant phenyl group increases the solubility and processability, while providing versatile site for chemical derivatization, enabling applications in optical films, fuel cells, water treatment, gas separation, and other emerging fields. This review systematically reviews research progress on PTFS, including monomer synthesis of α,β,β-trifluorostyrene (TFS), polymerization methodologies, chemical modifications, properties, and applications, which provide fundamental insights for further research and development of PTFS-based materials.
摘要:The performance enhancement of flexible and stretchable strain sensors is increasingly reliant on multi-dimensional structural design to overcome the inherent trade-off between conductivity and stretchability. This article systematically reviews innovative structural strategies, from two-dimensional (2D) planes to three-dimensional (3D) spaces, and their intrinsic regulation mechanisms for strain-sensing behaviors. Research indicates that 2D structures (e.g., island-bridge, microcrack, serpentine/fractal topology, wrinkle/wavy) achieve stress redistribution and protect functional units through in-plane geometric optimization. In contrast, 3D structures (e.g., porous/network, multilayer, core-shell, segmented, and helical) effectively dissipate strain energy via spatial deformation mechanisms, significantly expanding the deformation adaptability and signal stability of the devices. The synergistic effects of multi-scale structural design have led to major breakthroughs in sensor performance, achieving a maximum stretchability of up to 800%, a gauge factor exceeding 5000, and durability of over 106 cycles. However, the field still faces challenges, including the lack of quantitative structure-property relationships, inherent compromises between multiple performance metrics, difficulties in the controllable fabrication of complex 3D structures, and insufficient environmental adaptability. Future development should focus on AI-assisted rational design, innovative cross-dimensional bio-inspired architectures, the construction of dynamic adaptive systems, advances in precision manufacturing processes, and long-term reliability studies, thereby facilitating the transition of flexible sensing technology from laboratory innovation to practical application.
摘要:Functional polymer microspheres, known for their well-controlled morphology and unique functions, have broad applications in biomedicine, chemical engineering, electronic information, and environmental protection. Precipitation polymerization is a key technology for preparing functional polymer microspheres and stands out among other conventional methods because of its distinct advantages, such as high product purity, controllable particle size, and the absence of additives. This review summarizes the characteristics and applications of various types of precipitation polymerization (including conventional precipitation polymerization, distillation/reflux precipitation polymerization, controlled/“living” radical precipitation polymerization, and self-stabilized precipitation polymerization) and discusses the influence of key parameters, such as temperature, monomer concentration, stirring rate, solvent, and crosslinking agent, on the morphologies and properties of the resulting microspheres based on the three typical mechanisms of precipitation. This review provides theoretical and experimental references for the controlled preparation of functional microspheres and highlights promising research directions for their high-end applications.
摘要:Poly(ethylene terephthalate) (PET) is widely used in fibers, packaging, electronics, and electrical appliances because of its excellent overall performance. However, its flammability, low limiting oxygen index, and melt-dripping behavior limit its application in areas that require high flame-retardant safety standards. The alloyingying modification of PET by introducing a second phase, such as ester-based polymenonpolarlar polymers, or rubber elastomers, this approach not only significantly improves the mechanical properties, but also enhances the dispersion and efficiency of flame retardants. This overcomes the performance bottleneck of single-component PET flame-retardant materials, which struggle to balance high strength-toughness and high flame retardancy. This article summarizes the latest progress in the additive and reactive flame-retardant modifications of PET/ester-based polymer alloys, PET/non-polar polymer alloys, and PET/rubber elastomer alloys. Existing research indicates that current flame-retardant studies on PET polyester alloys face challenges in synergistically achieving high flame retardancy, high strength-toughness, and low cost. Future efforts should focus on multiphase mechanism coupling and interface-confined flame retardancy, development of green and efficient flame retardants, and establishment of industrially viable alloying processing strategies to meet the safety and functional requirements of fields such as rail transportation, building components, and electronic and electrical appliances.
摘要:The Fourth Industrial Revolution is profoundly changing the way of production and life for human society, and its scope and depth of impact is unprecedented. As the two core driving forces leading the future development of the Fourth Industrial Revolution, intelligent materials and embodied intelligence are bound to have a huge impact on the development of embodied intelligence and related fields. Polymer materials are ideal carriers for various intelligent agents due to their unique properties such as designability, flexibility and responsiveness, and the intelligent development of polymer materials is providing key material basis and technical support for the field of embodied intelligence. In this paper, the intelligent development of polymer materials and their applications in the field of embodied intelligence are introduced in detail from seven aspects: matrix materials, sensing system materials, driving and motion-controlling materials, self-healing and adaptive materials, energy harvesting and storage materials, environmental interaction and adaptive camouflage materials, and biocompound-polymer fusion-driven materials.
摘要:Polymer vesicles have unique application value in drug loading and release owing to their unique hollow and bilayer membrane structures. The preparation of polymer vesicles with controllable structures and sizes has always been a research hotspot in the field of polymer materials. Using Monte Carlo simulations, vesicles formed by cyclic diblock copolymers were chosen as the research object. Some of the cyclic diblock copolymers in the vesicles were converted into linear diblock copolymers, and the influence of the chain architecture of the diblock copolymers on the microstructure of the vesicle membrane was investigated. The simulation results show that regardless of the conversion ratio of the chain architecture in the system, the polymer vesicles can maintain an intact bilayer membrane structure and maintain an almost unchanged overall size. However, the hydrophobic membrane thickness and cavity size inside the vesicles strongly depend on the content of linear chains in the system. The simulation results show that, with the polymer vesicle as the initial state, by regulating the chain architecture of the polymer chains in the vesicle, the microstructure of the vesicle membrane can be controlled while maintaining the overall morphology and size of the vesicle, which provides the necessary theoretical basis for the preparation of polymer vesicles with controllable microstructures (such as hydrophobic film thickness and cavity size).
关键词:Cyclic block copolymer;Self-assembly;Monte Carlo simulation;Polymer vesicle
摘要:Artificial neural networks (ANN) and radial basis function networks (RBF) were employed to model and predict the fatigue life of natural rubber samples. Sensitivity analysis was conducted to quantitatively evaluate the influence of environmental temperature, rubber hardness, and peak strain on fatigue life. Under the experimental conditions (environmental temperature: 25, 50, 70 ℃; rubber hardness: N40, N50; peak strain: 0.4−1.3), the fatigue life of the samples varied from 9984 to 604247 cycles. By optimizing the number of neurons in the hidden layers, we found that the ANN model with a 3-25-10-1 structure and the RBF model with a 3-47-1 structure yielded the lowest mean squared error (MSE) in fatigue life prediction, with values of 0.0383 and 0.0045, respectively. The RBF model exhibited higher prediction accuracy, with the correlation coefficient (R) between predicted and measured fatigue life exceeding 0.9700 and reaching a maximum of 0.9847—superior to the ANN model (R=0.9511). Among the three factors, peak strain exerted the most significant influence on fatigue life (contribution: 62.14%), followed by environmental temperature (31.57%), whereas rubber hardness had the least impact (6.29%).
关键词:Artificial neural network;Radial basis function network;Natural rubber;fatigue life;sensitivity analysis
摘要:To address the issues of poor structural stability and low adsorption capacity in chitosan-based adsorbents, this study proposes a physicochemical dual-crosslinking strategy. Utilising chitosan (CS) as the matrix and polyethyleneimine (PEI) as the modifier, while incorporating carboxylated carbon nanotubes (CCNT) as the nanoscale crosslinking agent, a three-dimensional porous CS aerogel adsorbent (PEI/CCNT/CA) was constructed. Structural characterisation revealed that this aerogel possesses well-developed macropore channels and abundant active functional groups (―NH2, ―COOH, ―OH), which are conducive to the diffusion and adsorption of pollutant molecules. In adsorption performance testing, PEI/CCNT/CA demonstrated outstanding adsorption capacity for tartrazine (TZ), achieving a maximum adsorption capacity of 130.5 mg·g−1. The adsorption behaviour conformed to pseudo-second-order kinetics and the Langmuir isotherm model, indicating that the adsorption process primarily involved monolayer chemisorption. The material maintained good adsorption performance across a pH range of 2~9 and demonstrated excellent cycling stability. This study significantly enhanced the adsorption performance of chitosan-based aerogels by constructing a stable three-dimensional porous structure and leveraging synergistic effects of multiple functional groups, providing a promising novel adsorbent material for food wastewater treatment.
摘要:Currently, artificial intelligence (AI) is exerting an impact on the educational landscape with an intensity and scope that are unparalleled in history, with higher education institutions standing at the forefront and confronting unprecedented challenges. In response to the evolving demands of the era and with the objective of nurturing interdisciplinary and composite talents who are equipped with robust practical skills, exceptional innovation and entrepreneurship competencies, as well as the proficiency to tackle complex engineering problems, the polymer materials and engineering major at Sichuan University firmly anchors itself in the cultivation philosophy of “reinforcing foundational knowledge, enriching general education, expanding global perspectives, and fostering cross-disciplinary integration”. Drawing on the distinctive strengths and characteristics of Sichuan University’s polymer discipline, the program has initiated a comprehensive and in-depth reform of teaching practices in crucial practical components, namely experiments, internships, and hands-on training. This reform has been implemented across multiple dimensions, including top-level strategic planning, curriculum architecture, pedagogical approaches, and platform development. Through a series of well-planned and executed reform initiatives, the program has successfully constructed a “Three-Practical” (experiment-based, internship-oriented, and training-centered) talent cultivation model for polymer materials, empowered by digital intelligence and driven by disciplinary development. This model has led to a marked improvement in the quality of innovative talent cultivation, ensuring better alignment with the talent development requirements of the new era of education. The findings and methodologies presented in this study offer valuable insights and serve as a replicable model for practical teaching reform and innovative talent cultivation in higher education institutions.
关键词:Digital and intelligent empowerment;Discipline-driven;Polymer materials and engineering major;Practical education
摘要:With the rapid development of digital-intelligent technologies, the polymer materials industry is undergoing a profound digital–intelligent transformation. Research indicates that the polymer materials and engineering program urgently needs to cultivate talent with interdisciplinary and integrated knowledge structures, comprehensive abilities to use digital-intelligent tools, innovative thinking, and a strong sense of social responsibility. The polymer materials and engineering program at East China University of Science and Technology takes “digital-intelligent literacy cultivation” as its core and systematically advances reforms in curriculum design, course structure, practical training, and faculty development to this end. It has established a talent-training model characterized by a “composite knowledge structure−intelligent curriculum system−progressive practical training−synergistic integration of research and teaching”. By optimizing course content, deepening industry-education integration, and strengthening AI literacy among faculty, this model promotes the digital-intelligent transformation of both the teaching workforce and the instructional system, significantly enhancing students’ innovation and engineering practice capabilities. The research results provide a replicable paradigm for the digital–intelligent reconstruction of Polymer Materials and Engineering education and offer strong talent support for the high-quality development of the materials field.
关键词:Digital-intelligent era;Polymer materials and engineering;Talent cultivation;Comprehensive knowledge structure;Digital-intelligent literacy
摘要:There are problems of fragmented knowledge points and a disconnection between theory and practice in the curriculum module of the polymer materials and engineering major. This research–guided by the “new engineering” initiative and aligned with the latest polymer industry trends–has established a “three-tier” major course module. By integrating teaching content, optimizing practice components, reforming teaching methods and strategies, and deep integration with curriculum-based ideological and political education, a systematic reconstruction of the polymer major core courses of the School of Materials Science and Engineering at Zhengzhou University was accomplished. The results of this study show that the reform efficiently enhances students’ engineering practice capability and innovative literacy, leading to fruitful teaching achievements and offering valuable experience for developing similar major course clusters.
关键词:Major of polymer materials and engineering;Construction of core curriculum module;Teaching reform;New engineering
摘要:This review is dedicated to the memory of Prof. Tang Au-Chin (Jilin University) due to his distinguished contributions in the development of statistical theory for polymeric reactions. The objective of this theory is to quantify the relationship between average properties of polymers and the extent of reaction in a polymerization system, thereby regulating and controlling the practical preparation of polymeric materials. In China, this theory was initiated by Prof. Tang in 1956, and now it had become a systematic theory for various polymerization systems. We summarize the development process of the theory and address some significant contributions made by Prof. Tang and collaborators. For clarity, three main stages since 1950’s are involved in its development history over the past 50 years. During the period, Prof. Tang and his group exemplified the spirit of innovation, cooperation, and perseverance. This paradigm not only was of important historical significance but also gave rise to a profound effect on many scientists and young scholars.