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Synthesis and Characterization of a Novel Aqueous Dispersion Poly[urethane-(disperse blue 14)-urethane] Dye 认领 引用 被引量：2
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作者 XianHaiHU XingYuanZHANG +1 位作者 JiaBingDAI GeWenXU 《Chinese Chemical Letters》 SCIE CAS 2004年第5期515-517,共3页
A novel polymeric dye of aqueous dispersion poly[urethane-(disperse blue 14)-urethane] was synthesized based on poly(propylene glycol) (PPG), 2, 4-tolylene diisocyanate (TDI), klimethylol propionic acid (DMPA), disper... A novel polymeric dye of aqueous dispersion poly[urethane-(disperse blue 14)-urethane] was synthesized based on poly(propylene glycol) (PPG), 2, 4-tolylene diisocyanate (TDI), klimethylol propionic acid (DMPA), disperse blue 14 and triethylamine (TEA) depending on a modified acetone process. Fourier transform infrared spectroscopy (FTIR) was used to identify Lhe structure of the polymeric dye, indicating an obvious carbonyl stretching absorption in disperse blue 14. The polymer was also characterized by the analysis of DSC, TGA, WAXD and UV-Vis spectroscopy. 展开更多
关键词 Aqueous dispersion poly[urethane-(disperse blue 14)-urethane] polymeric dye.
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Effects of Laser-Induced Heating on the Photoinduced Birefringence in Azobenzene-Side-Chain Copolymer 认领 引用 被引量：5
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作者 杨军 明海 +5 位作者 章江英 王沛 郎建英 鲁拥华 刘剑 张其锦 《Chinese Physics Letters》 SCIE EI CAS 2003年第10期1826-1828,共3页
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Analysis of Photosensitivity of Copolymer Optical Fibre Preform 认领 引用 被引量：3
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作者 马辉 李增昌 +6 位作者 明海 张其锦 谭华耀 张永生 张涛 王沛 谢建平 《Chinese Physics Letters》 SCIE EI CAS 2004年第11期2252-2254,共3页
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Dynamically Photocrosslinking of Polypropylene/EPDM Blends as a Thermoplastic Elastomer 认领 引用 被引量：1
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作者 WANGWei-zhi WUQiang-hua QUBao-jun 《Chemical Research in Chinese Universities》 SCIE EI CAS 2004年第1期111-113,共3页
The mechanical properties and the crystal morphological structures of the dynamically photocrosslinked polypropylene(PP)/ethylene-propylene-diene terpolymer(EPDM) blends have been studied by means of mechanical tests,... The mechanical properties and the crystal morphological structures of the dynamically photocrosslinked polypropylene(PP)/ethylene-propylene-diene terpolymer(EPDM) blends have been studied by means of mechanical tests, wide-angle X-ray diffraction(WAXD), and differential scanning calorimetry(DSC). The dynamically photocrosslinking of the PP/EPDM blends can improve the mechanical properties considerably, especially the notched Izod impact strength at low temperatures. The data obtained from the mechanical tests show that the notched Izod impact strength of the dynamically photocrosslinked sample with 30% EPDM at -20 ℃ is about six times that of the uncrosslinked sample with the same EPDM component. The results from the gel content, the results of WAXD, and the DSC measurements reveal the enhanced mechanism of the impact strength for the dynamically photocrosslinked PP/EPDM blends as follows: (1) There exists the crosslinking of the EPDM phase in the photocrosslinked PP/EPDM blends; (2) The β-type crystal structure of PP is formed and the content of α-type crystal decreases with increasing the EPDM component; (3) The graft copolymer of PP-g-EPDM is formed at the interface between the PP and EPDM components. All the above changes of the crystal morphological structures are favorable for increasing the compatibility and enhancing the toughness of the PP/EPDM blends at low temperatures. 展开更多
关键词 Polypropylene Ethylene-propylene-diene terpolymer Dynamical Photocrosslinking Structure and properties
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Birefringence Grating and Surface Grating in Azobenzene Polymer Liquid Crystal Films Investigated by Near—Field Optical method 认领 引用 被引量：2
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作者 章江英 明海 +9 位作者 王沛 孙晓红 鲁拥华 吴云霞 谢建平 张其锦 刘剑 谢爱芳 张泽渤 顾本源 《Chinese Physics Letters》 SCIE EI CAS 2003年第7期1043-1046,共4页
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In-situ Enhanced Toughening of Poly(ethylene terephthalate)/elastomer Blends via Gamma-Ray Radiation at Presence of Trimethylolpropane Triacrylate 认领 引用
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作者 Li-zhao Xie Le-chen Chen +3 位作者 Mo-zhen Wang Qi-chao Wu Xiao Zhou Xue-wu Ge 《Chinese Journal of Chemical Physics》 SCIE EI CAS CSCD 2016年第6期703-709,I0001,I0002,共7页
Gamma-ray radiation has always been a convenient and effective way to modify the inter- facial properties in polymer blends. In this work, a small amount of trimethylolpropane triacrylate （TMPTA） was incorporated in... Gamma-ray radiation has always been a convenient and effective way to modify the inter- facial properties in polymer blends. In this work, a small amount of trimethylolpropane triacrylate （TMPTA） was incorporated into poly（ethylene terephthalate） （PET）andom terpolymer elastomer （ST2000） blends by melt-blending. The existence of TMPTA would induce the crosslinking of PET and ST2000 molecular chains at high temperatures of blend- ing, resulting in the improvement in the impact strength but the loss in the tensile strength. When the PET/ST2000 blends were irradiated by gamma-ray radiation, the integrated me- chanical properties could be enhanced significantly at a high absorbed dose. The irradiated sample at a dose of 100 kGy even couldn＇t be broken under the impact test load, and at the same time, has nearly no loss of tensile strength. Based on the analysis of the impact- fractured surface morphologies of the blends, it can be concluded that gamma-ray radiation at high absorbed dose can further in situ enhance the interfacial adhesion by promoting the crosslinking reactions of TMPTA and polymer chains. As a result, the toughness and strength of PET/ST2000 blend could be dramatically improved. This work provides a facial and practical way to the fabrication of polymer blends with high toughness and strength. 展开更多
关键词 Toughened PET blend Interracial interaction Gamma-ray radiation Radia- tion crosslink Trimethylolpropane triacrylate
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Amplified Spontaneous Emission of Rhodamine B-Doped Step-Index Polymer Optical Fibre 认领 引用
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作者 李增昌 梁浩 +2 位作者 郑志强 张其锦 明海 《Chinese Physics Letters》 SCIE EI CAS 2005年第3期618-620,共3页
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Enhanced Three-Photon Absorption by Symmetric Twisted Intramolecular Charge Transfer 认领 引用
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作者 郭福全 杨军 +1 位作者 张其锦 明海 《Chinese Physics Letters》 SCIE EI CAS 2005年第6期1394-1397,共4页
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Influence of Monomer Types on the Designability of a Protein—Model Chain 认领 引用
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作者 梁好均 王元元 《Chinese Physics Letters》 SCIE EI CAS 2002年第9期1382-1384,共3页
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A Layer-Structured Metal-Organic Framework-Derived Mesoporous Carbon for Efficient Oxygen Reduction Reaction 认领 引用 被引量：2
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作者 Hong-guang Song Yan-iun Ding +1 位作者 Jia Yang Hang-xun Xu 《Chinese Journal of Chemical Physics》 SCIE EI CAS CSCD 2016年第6期693-698,I0001,共6页
Developing highly active and durable electrocatalysts for the oxygen reduction reaction （ORR） is crucial to large-scale commercialization of fuel cells and metal-air batteries. Here we report a facile approach for t... Developing highly active and durable electrocatalysts for the oxygen reduction reaction （ORR） is crucial to large-scale commercialization of fuel cells and metal-air batteries. Here we report a facile approach for the synthesis of nitrogen and oxygen dual-doped meso-porous layer-structured carbon electrocatalyst embedded with graphitic carbon coated cobalt nanoparticles by direct pyrolysis of a layer-structured metal-organic framework. The elec- trocatalyst prepared at 800℃ exhibits comparable ORR performance to Pt/C catalysts but possesses superior stability to Pt/C catalysts. This synthetic approach provides new prospects in developing sustainable carbon-based electrocatalysts for electrochemical energy conversion devices. 展开更多
关键词 Electrocatalysis Oxygen reduction reaction Mesoporous carbon Cobaltnanoparticles
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OH…O Out-of-Plane Bending Band [γ(OH)] and Its Overtone Band of Dimethylol Propionic Acid(DMPA) 认领 引用
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作者 RENZhi-yong MAJian-Ming +1 位作者 WUHai-ping MADe-zhu 《Chemical Research in Chinese Universities》 SCIE EI CAS 2004年第1期99-102,共4页
In the present paper are reported the OH…O out-of-plane bending band[γ(OH)] between 900—950 cm -1 of dimethylol propionic acid(DMPA), its dependence upon temperature and its overtone band investigated via FTIR spec... In the present paper are reported the OH…O out-of-plane bending band[γ(OH)] between 900—950 cm -1 of dimethylol propionic acid(DMPA), its dependence upon temperature and its overtone band investigated via FTIR spectroscopy. It has been found based on the crystal structure that the band [γ(OH)] may not certainly be the characteristic band of carboxylic dimers, it can also result from another H-bond formed between carboxylic carbonyl and the primary hydroxyl. In addition, the band [γ(OH)] is very sensitive to temperature change but its overtone band can only appear at a low temperature. 展开更多
关键词 H-bond Out-of-plane bending band Overtone
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Micro-and nano-patterning of polymers 认领 引用
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作者 SHIJinxia LIHeng HEPingsheng 《Chinese Science Bulletin》 2004年第14期1431-1436,共6页
Micro- and nano-patterning of polymers is es-sential in nanoscience and nanotechnology. Single macro-molecule is a particle with nano-scale dimension; polymers have multi-structure, various configurations, and ability... Micro- and nano-patterning of polymers is es-sential in nanoscience and nanotechnology. Single macro-molecule is a particle with nano-scale dimension; polymers have multi-structure, various configurations, and ability of forming blends with varying polymers or copolymers with different monomers, which will result in plenty of patterns of micro- and nano-scale. Besides, special physical and me-chanical properties of polymers will not only be used to make patterns in many existing microfabrication technologies, but also develop new patterning techniques. The topic of micro- and nano-patterning of polymers has been granted as a key project by the National Natural Science Foundation of China. 展开更多
关键词 聚合体 纳米技术 微米 图案形成 单链大分子阵列 相分离
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