最新刊期
卷 0 ， 期 0 ， 2020
- 摘要：Polymeric materials modified by core-shell particles combine the advantages of elastomer toughening and rigid-particles reinforcing effects,and thereby it is possible to obtain composite materials with both high toughness and high rigidity simultaneously.In this review,the classification,morphologies,formation mechanism of core-shell particles,and toughening mechanism on polymer matrix are presented.Additionally,the morphological evolution and its effects on mechanical properties of both reactive and non-reactive blends are discussed in details.关键词：Core-shell particles;Morphology;Toughening;Polymer blends;Mechanical properties
- 2
- |
- 11
- |
- 5
发布时间：2022-09-18 - 摘要：The separation,purification,structural characterization,chemical modification and applications of active natural polysaccharides in biomedical field were summarized in this article.The general view of the trends of natural active polysaccharides research was given,too.关键词：Polysaccharides;Active;Biomedical field
- 3
- |
- 11
- |
- 7
发布时间：2022-09-18 - 摘要：This review introduced the mechanism of water absorption in water-swellable rubber (WSR) and the preparation of it.The effect of water uptake and swelling properties and mechanical properties of WSR were analyzed. Development trends and applications of WSR were also described.关键词：Water-swellable rubber;Water uptake and swelling properties;Mechanical properties;Compatibility
- 2
- |
- 11
- |
- 8
发布时间：2022-09-18 - 摘要：The present paper reviews recent advance of hyperbranched polymers in synthetic methods and describes their applications in an attempt to make this field to be further understood, and to accelerate its development more quickly.关键词：Hyperbranched polymer;Synthesis;Application
- 2
- |
- 11
- |
- 5
发布时间：2022-09-18 - 摘要：FI catalyst as a high performance catalyst is developed for olefin polymerization in recent years.The catalyst has attracted much attention,because of very high polymerization activity,structural control of polyolefins with facility,multiple living polymerization and so on.Chemical description of the catalyst is recounted first,and then five main characteristics with emphasis,structure of active species of the catalyst,polymerization mechanism, and application are presented respectively in the review with 5 Tables,6 Schemes,19 Figures,25 Complexes,and 48 references.关键词：FI catalyst;Olefin polymerization;Phenoxy-imine ligand
- 4
- |
- 12
- |
- 3
发布时间：2022-09-18 - 摘要：The efficiency of photoinitiator IR1700in cleavage type initiators was best and value of sensitivity of the system containing IR1700 was10.6mJ·cm-2.The value of sensitivity of the system containing abstracting hydrogen type initiator composed of benzophenone (BP) and triethanol amine (TEOA) could be up to 26.8mJ·cm-2.It is shown that the optimum weight ratio of BP and TEOA was1∶2.The mixed photoinitiator systems composed of cleavage type initiator and abstracting hydrogen type initiator showed higher sensitivity than other initiators,which were composed of IR651,TEOA and IR1700,and value of sensitivity could be up to 7.9mJ·cm-2.It is was found that optimum weight ratio of IR651,TEOA and IR1700was1∶1∶1.The optimum content of photoinitiator in the photosensitive system was 4% (wt) ~6% (wt).关键词：UV-curing;Silicone;Photoinitiator
- 2
- |
- 11
- |
- 0
发布时间：2022-09-18 - 摘要：Effect of carbon nanotube content on the free volume and mechanical properties of nylon6/carbon nanotubes (CNTs) nanocomposites have been investigated by positron annihilation lifetime spectroscopy (PALS). Experimental results found that the variation of free volume hole size is very small,while the concentration of free volume and apparent free volume fraction decrease with increasing the content of CNTs.These decreasing are due to the confining effect on polymer chains in the interfacial layer caused by CNTs,and to the enhancement of crystallinity caused by CNTs filler.The measurements of the mechanical properties revealed that the uniformly dispersion and good interfacial properties between CNTs and polymer matrix can improve the stiffness of material,but the decreasing in free volume fraction will decrease its toughness.关键词：Carbon nanotube composites;Free volume;Mechanic Property;Positron annihilation
- 3
- |
- 11
- |
- 1
发布时间：2022-09-18 - 摘要：Peptide nucleic acid (PNA) with peptide linkages as its backbone is a brand new kind of compounds which are developed in recent years.It is an analog of DNA in molecular structure.PNA can hybridize DNA and RNA specifically,thus it can be used as probes.Compared with traditional DNA probes,PNA probes enjoy higher hybrid-stabilization,better specificity,and it can hybridize target substance under low salt ion concentration.This paper makes a systemic comparison between PNA probe and DNA probe in the aspects of probes preparation, hybridization specificity,hybridization kinetics and biosensors applications.关键词：PNA;DNA;Probe;Hybrid;Systemic comparison
- 2
- |
- 11
- |
- 1
发布时间：2022-09-18 - 摘要：Polyfluorene and its derivatives is one of the most promising electroluminescent polymers. This paper describes the recent progress on the property optimization of these polymers, such as the improvement of electroluminescence efficiency and stability, tuning of color and enhancement of processability.关键词：Electroluminescence;Polyfluorenes;Efficiency;Color;Processability
- 2
- |
- 12
- |
- 3
发布时间：2022-09-18 - 摘要：Starch-based biodegradable foam plastics are a kind of environmental friendly material with promising developmental potential. In this paper, progress in the performances of starch-based biodegradable foam plastics was reviewed.关键词：Starch;Biodegradable;Foam plastics;Environmental friendly
- 3
- |
- 14
- |
- 1
发布时间：2022-09-18 - 摘要：Now a day,many sound absorption material is designed to have decorative function.The product made of synthetic fiber such as nonwoven web,fabric and carpet as a good porous material will be used in buildings as both ornament and sound absorption material.The study about sound absorption properties of product made of synthetic fiber is discussed in this paper.关键词：The product made of synthetic fiber;Sound absorption;Progress
- 2
- |
- 11
- |
- 1
发布时间：2022-09-18 - 摘要：This courseware mainly uses Photoshop 8.0 to deal with pictures and make buttons,uses Frontpage 2003to edit the web pages which are created as static state,and uses Dreamveawer MX2004 to create the blank web pages which are needed for the interlinkage.Teaching plan is edited in the form of Power point, chemistry reaction equations are edited by Chemical word,and polymerization mechanism is made as three-dimensional animation by 3DWAX. We considered the composition and convenience of user operation on the designing of interface.Suitable pictures,reasonable designing of interface and harmony colors have achieved the unification of patterns and contents. The course of polymer chemistry is characterized by many and long chemistry reaction equations and abstract polymerization mechanism which are difficult to understand.In order to improve the quality of teaching and acquire the better efficiency of learning,it is necessary to make network courseware.关键词：Polymer chemistry;Web pages;Network courseware
- 2
- |
- 11
- |
- 0
发布时间：2022-09-18
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0