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131. Disclosing the formation of ring-banded spherulites for semicrystalline polymers through the double-layer film method
摘要：很少有人关注过半结晶性聚合物双层膜体系环带球晶的形成。在此研究中，以偏光显微镜（POM）方法探索了聚氧化乙烯/聚乳酸(PEO/PLA)双层膜在PEO膜熔点之上不同温度下等温结晶过程中环带球晶的成核和生长。PLA和PEO组分的先后结晶以两次淬火结晶过程来确定。以扫描电子显微镜观察环带球晶的表面形貌。实验结果和含25 wt% PEO组分的PLA/PEO 共混物的进行了比较。有趣的发现是在PEO/ PLA双层膜中环带球晶的环间距随结晶温度的变...
http://www.polymer.cnt//ss/zhigangwang/publicationsshow_6795.html |
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Binary Colloidal Heterocoagulation for Raspberry-like Particles through Azide-alkyne Click Reaction
The core–corona hybrid particles with a raspberry-like structure were prepared by a binary colloidalhetero-coagulation through a click reaction between azide group and alkynyl group. The azide func-tionalized poly(ethylene glycol dimethacrylate-co-2-hydroxyethyl methacrylate) (P(EGDMA-co-HEMA))microspheres behaved as the core and the alkynyl group modified poly(N,N-methylene diacrylamide-co-metha...
http://www.polymer.cnt//ss/yangxinlin/publicationsshow_6576.html |
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Tough nanocomposite double network hydrogels reinforced with clay nanorods through covalent bonding and reversible chain adsorption
Polymer hydrogels with superior strength and toughness are potential candidate materials for the replacement or engineering of load bearing tissues. This manuscript reports on novel tough nanocomposite hydrogels with unusual energy dissipation mechanism based on both covalent and physical interactions between clay nanorods and polymer chains. Attapulgite (ATP) nanorods grafted with vinyl groups ...
http://www.polymer.cnt//ss/fujun/publicationsshow_6393.html |
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Doubly thermo-responsive ABC triblock copolymer nanoparticles prepared through dispersion RAFT polymerization
in press
http://www.polymer.cnt//ss/zhangwangqing/publicationsshow_6048.html |
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108.Enhanced thermal stability of organogels through self-reinforcing supramolecular assembly of a cholesterol–polyoxomatalate–cholesterol hybrid gelator
We report our study on the enhanced thermal stability of organogels through forming self-reinforcing supramolecular assemblies of a polyoxometalate (POM)-containing hybrid gelator. The designed and synthesized gelator has a molecular structure of cholesterol–POM–cholesterol. In our experiment, we found an intriguing phenomenon: the hybrid gelator could dissolve in toluene at 80 C and the soluti...
http://www.polymer.cnt//ss/wangwei/publicationsshow_5957.html |
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Improvement of sensing characteristics of radio-frequency sputtered tungsten oxide films through surface modification by laser irradiation
To enhance sensing characteristics of semiconductor gas sensors, the surface morphology of sensing layer modified by laser irradiation was performed. Tungsten oxide (WO3) thin-films grown on Si/SiO2 wafers by radio-frequency sputtering were annealed and then irradiated by an excimer laser under various laser power densities. The effect of the laser irradiation on film surface morphology was s...
http://www.polymer.cnt//ss/zhangchao/publicationsshow_5831.html |
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Synthesis of new conjugated polyfluorene derivatives bearing triphenylamine moiety through a vinylene bridge and their stable blue electroluminescence
Two new conjugated polyfluorene derivatives bearing triphenylamine moiety through a vinylene bridge,PDPF and PBPF, have been successfully synthesized according to the Suzuki coupling method. The structures and properties of the monomers and the resulting conjugated polymers were characterized by using 1H NMR, 13C NMR, FT-IR, elemental analysis, GPC, TGA, DSC, UV-vis absorption spectrosco...
http://www.polymer.cnt//ss/tangrupei/publicationsshow_5505.html |
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Morphological transition of dry vesicles into onion-like multilamellar micelles induced through heating at high temperature
In this Letter, we report the morphological transition of dry block copolymer vesicles into onion-like multilamellar micelles induced through heating. When the temperature is higher than the glass transition temperature of block copolymer, the vesicles can collapse, and finally form onion-like multilamellar micelles via micro phase separation. This phenomenon is observed in both A–B and A–B–A...
http://www.polymer.cnt//ss/zhuyutian/publicationsshow_5307.html |
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Study of shear-induced interfacial crystallization in polymer-based composite through in situ monitoring interfacial shear stress
In order to further investigate shear-induced
interfacial crystallization of polymer-based composites, an
improved fiber-pulling device was designed and built. Its
peculiar characteristic is that a force transducer is assembled
to in situ monitor the variation of interfacial shear stress
between the polymer matrix and pulling fiber. Thus, the
relationship between interfacial shear stress and...
http://www.polymer.cnt//ss/zhengguoqiang/publicationsshow_4629.html |
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Controlled synthesis of graft polymer through the coupling reaction between the appending β-keto ester and the terminal amine
A new method to synthesize graft polymer with controlled graft density (?) through the coupling reaction between the appending β-keto ester and the terminal amine is proposed. Following this method, the backbone polymer of poly[2-(acetoacetoxy) ethyl methacrylate] (PAEMA) containing the appending β-keto ester is synthesized by reversible addition-fragmentation chain transfer polymerizati...
http://www.polymer.cnt//ss/zhangwangqing/publicationsshow_4613.html |
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