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Dewetting Behavior of Hydrogen Bonded polymer complex Film under Hydrothermal Condition

Chinese Journal of polymer Science 2018年第9期36卷 1036-1042页

作者： Chao Su Song-Mei Ma Geng-Xin Liu Shu-Guang Yang State Key Laboratory for Modification of Chemical Fibers and polymer Materials Center for Advanced Low-dimension Materials College of Material Science and Engineering Donghua University Department of polymer Science The University of Akron

Hydrogen-bonded polymer complex films with the thickness ranging from 50 nm to 2400 nm were prepared by layer-by-layer （LbL） assembly of poly（2-ethyl-2-oxazoline）（PEOX） and poly（acrylic acid）（PAA）. The dewetting behavior of PEOX/PAA films under hydrothermal condition was investigated. It was found that the dewetting occurred at solid-liquid interface, and the typical morphologies such as holes, irregular cellular structure, and droplets were observed. Atomic force microscopy （AFM） revealed the initial rupture of the film. Microscopic Raman and infrared （IR） imaging demonstrated that the PEOX and PAA chains remained association during the dewetting process.

关键词： Hydrogen-bonding polymer complex Dewetting

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Photo-responsive Behaviors of Hydrogen-Bonded polymer complex Fibers Containing Azobenzene Functional Groups

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Advanced Fiber Materials 2021年第3期3卷 172-179页

作者： Miaomiao Zhu Weijie Wang Caihong Zhang Liping Zhu Shuguang Yang State Key Laboratory for Modification of Chemical Fibers and polymer Materials Center for Advanced Low-Dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China

Two azobenzene compounds,Disperse Red 1(DR1)and 4-aminoazobenzene(Aazo),were separately linked to poly(acrylic acid)(PAA)side chains to form PAA-DR1 and PAA-Aazo,which were then associated with poly(ethylene oxide)(PEO)to produce hydrogen-bonded polymer complex fibers.After UV irradiation,the initial modulus and yielding strength of PAA-Aazo/PEO fiber were both increased tremendously,while the mechanical properties of PAA-DR1/PEO fiber only slightly changed.After drawn and dried in vacuum,PAA-DR1/PEO and PAA-Aazo/PEO fibers with an extended length exhibited a contraction of 20%and 25%under UV irradiation,showing potential for photo-actuation.

关键词： Photo actuator Photomechanical Optomechanical polymer complex Azobenzene

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Preparation of Carbon Nanotubes by the Catalysis of polymer Metal complex on Porous Al203 Matrix

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Chemical Research in Chinese Universities 2001年第Z1期17卷 95-96页

作者： SHI YanLi Department of Chemistry Lanzhou University

At present, synthesis of carbon nanotubes (CNTs) is normally conducted on a vapor-to-solid interface at ca. 500-3500℃ via various vapor phase methods, such as are discharge, laser ablation, catalytic pyrolysis and chemical vapor deposition, etc.1-2 Recently, channel materials (such as channels of alumina and of AlPO4-5 zeolite) 3 have been utilized as solid-state templates to grow CNTs inside the channel. Here we described a novel method to prepare the carbon nanotubes based on the decomposition of C2H2 gas on the Co-Ni catalyst anchored by polymer complex on the porous A12O3 matrix. The degree of graphitization of synthesized CNTs and catalysts are of great interest.

关键词： Metal complex carbon nanotubes chemical vapor deposition polymer complex vapor phase

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STUDIES ON IMMOBILIZED GLUCOSE OXIDASE BY DIETHYLAMINOETHYL CELLULOSE complexES

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Chinese Journal of polymer Science 1993年第4期11卷 74-79页

作者：王玲治袁红方世壁江英彦 Institute of Chemistry Academia Sinica Beijing 100080

The properties of immobilized glucose oxidase (GOD) by the complexes of diethylaminoethyl cellulose(DEAEC) with different polymers, such as polymethylacrylic acid (PMAA), polyacrylic acid (PAA), polystyrene sulfonic acid (PSSA), polyvinylaleohol (PVA), polyethylene oxide (PEO) and styrene-maleic acid copolymer (PSMA) were investigated. The activity of immobilized GOD was obviously influenced by the component of the DEAEC complexes. The relative activity of the immobilized GOD reached to maximum and over 90% of the native GOD. when the DEAEC-PMAA DEAEC-PAA complexes were used as a carrier with the molar ratio of DEAEC and polyacid of about one. Michaelis constants (Km) of the immobilized enzymes of DEAEC-GOD-PMAA and DEAEC-GOD-PAA were determined to be 1.25 and 1.00, respectively. Moreover, the immobilized GOD has a good storage stability and cyclic life.

关键词： Immobilized glucose oxidase Diethylaminoethyl cellulose polymer complex

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IMMOBILIZATION OF GLUCOSE OXIDASE AND CELLULASE BY CHITOSAN— POLYACRYLIC ACID complex

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Chinese Journal of polymer Science 1990年第2期8卷 115-120页

作者：王玲治江英彦张长德黄德琇 Institute of Chemistry Academia Sinica Beijing Xi'an Jiaotong University Xi'an China

This study is concerned with chitosan-polyacrylic acid complex as a carrier to immobilize glucose oxidase (GOD)and cellulase. The optimum emperature of the immobilized GOD (IG) was determined to be 60℃ which is higher than that of the native GOD about 40℃. The optimum temperature of the immobilized cellulase (IC) was determined to be about 30℃ higher than that of native cellulase. Both of the optimum pH of IG and IC shifted one pH unit to acid. Immobilized enzyme may be used in more wide pH range. Their storage life are much longer compared with their native states. Both of them can be reused at least 12 times.

关键词： Immobilized enzyme Cellulase Glucose oxidase polymer complex

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