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SYNTHESIS OF polymeric β-CYCLODEXTRIN SUPPORTED BY CROSSLINKED POLY(ACRYLAMIDE-co-VINYLAMINE)AND ITS CATALYSIS OF THE HYDROLYSIS OF p-NITROPHENYL ACETATE

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Chinese Journal of polymer Science 2000年第2期18卷 155-160页

作者： Hong-jun wang Jian-biao Ma Bing-lin He The state key laboratory of functional polymer materials for adsorption and separation, institute of polymer chemistry, nankai university, tianjin 300071, china 南开大学吸附分离功能高分子材料国家重点实验室天津

polymeric β-cyclodextrin (β-CD) supported by crosslinked poly(acrylamide-co-vinylamine) was synthesized as anartificial analog of hydrolytic enzyme and its catalysis of the hydrolysis of p-nitrophenyl acetate (p-NPA) was theninvestigated. The result showed that the polymer-supported β-CD could accelerate the hydrolytic reaction of p-NPA morequickly than β-CD itself and crosslinked poly(acrylamide-co-vinylamine) alone. The acceleration rate of the polymer-supported β-CD was about 10 times as fast as that of free β-CD in 0.01 mol/L phosphate buffer (pH 7.4) containing 32%DMSO at 37±0.1℃ when the molar amount of β-CD units in the polymer was equal to that of free β-CD in the *** enhanced acceleration of thc polymer-supported β-CD should be ascribed to the cooperative contribution of theinclusion effect of β-CD ring and the nucleophilic effect of amino groups on the polymeric support.

关键词： polymer-supported catalysis β-Cyclodextrin Crosslinked poly(acrylamide-co-vinylamine) Hydrolysis of p-nitrophenyl acetate

REINFORCEMENT OF CALCIUM PHOSPHATE CEMENTS WITH PHOSPHORYLATED CHITIN

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Chinese Journal of polymer Science 2002年第4期20卷 325-332页

作者： Xiao-hong wang Jian-biao Ma Yi-nong wang Bin-ling He The state key laboratory of functional polymer materials for adsorption and separation institute of polymer chemistry nankai university tianjin 300071, china nankai Univ Inst Polymer Chem State Key Lab Funct Polymer Mat Adsorpt & Separat Tianjin 300071 Peoples R China

Phosphorylated chitins (P-chitins) as the additives of calcium phosphate cements (CPCs) were prepared by the phosphorylation of chitin with phosphorus pentoxide in methanesulfonic acid. Their physical properties and effects on CPCs from monocalcium phosphate monohydrate (MCPM) and calcium oxide (CaO) or dicalcium phosphate dihydrate (DCPD) and calcium hydroxide [Ca(OH)(2)] were investigated. Addition of P-chitin (M-w = 2.60 x 10(4); degree of substitution, DS = 0.68) to the liquid phase in amounts up to 3 wt.% for MCPM and CaO cements or 1.5 wt.% for DCPD and Ca(OH)(2) cements could enhance the mechanical strength considerably, while little influence on the setting time was observed. However, further addition of P-chitin will cause no setting.

关键词： phosphorylated chitins calcium phosphate cements mechanical strength setting time

HYPERBRANCHED AROMATIC polymerS OBTAINED VIA SELF-CONDENSATION

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Chinese Journal of polymer Science 2001年第5期19卷 517-520页

作者： Xi Zhang yong-ming Chen Dong-yan wang Jing Jiang Hong-wei Liu Chuan-fu Chen Fu Xi Center for Molecular Science, institute of chemistry Chinese Academy of Sciences, Beijing 100080, china The state key laboratory of functional polymer materials for adsorption and separation, nankai university tianjin 300071, china 中科院化学所北京南开大学吸附分离功能高分子材料国家重点实验室天津

Hyperbranched aromatic polymers were prepared by Friedel-Crafts reaction with Lewis acid, AlCl3 and ZnCl2, as the catalysts. In this work, hyperbranched polybenzyl (PB) and poly(methylene)naphthalene (PN) were synthesized and characterized by H-1-NMR and GPC. In addition, their florescence properties were measured with steady-state florescence spectra in THF and ethylene dichloride. The quantum yields of polybenzyl and poly(methylene)naphthalene in ethylene dichloride are much larger than those in THE.

关键词： hyperbranched polymer polybenzyl poly(methylene)naphthalene fluorescent spectra

PHOTOPHYSICAL STUDY OF SULFONATED POLYSTYRENE

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Chinese Journal of Reactive polymers 2004年第Z1期 29-34页

作者： ZHANG Jixiang LI Hexian** wang Guochang wang Yuexi HE Binglin state key laboratory of functional polymer materials For adsorption and separation institute of polymer chemistry, nankai university, tianjin 300071, china

The photophysical properties of a series of sulfonated micromolecule (paratoluenesulfonic acid, HPTS) and macromolecules (linear and crosslinked polystyrene) have been studied by steady-state fluorescence spectra. The results indicate that the ground sulfonated ring associations can form in both the micromolecules and the macromolecules. The fluorescence spectra of the sulfonated crosslinked copolymers appear a red-shift when the copolymers change from hydrogen-type to sodium-type, and some new emission bands appear in the long-wavelength region. These results are explained in terms of synergetic effect of hydrogen bond,π-πinteraction and crosslinking effect.

关键词： photophysics Fluorescence Ground sulfonated ring association.

SYNTHESIS　OF　polymer－SUPPORTED　PALLADIUM　CATALYSTS　AND　THEIR　CATALYTIC　BEHAVIOR　FOR　THE　SELECTIVE　HYDROGENATION　OF　MESITYL　OXIDE

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Chinese Journal of Reactive polymers 1996年第1期5卷 26-31页

作者： Li Hong Jin Xiaonong Sun Juntan He Binglin(state key laboratory of functional polymeric materials for adsorption and separation,institute of polymer chemistry, nankai Universitry, tianjin 300071, P. R. china)

polymer of styrene-divinylbenzene in bead form was made by suspension polymerization. After chloromethylation and amination, five kinds of polynZeric ammes were thus obtained. These polymers were reacted with palladium chloride, and were then reduced. The polymer-supported catalysts synthesized above were used to catalyze the selective hofrogenation Of mesityl oxide under reaction conditions Of 80t and 10kg/cm￣2, using methanol as a *** catalytic activity and MIBK (methyl isobutyl ketone) formation selectivity of the catalysts were examined.

关键词：合成钯聚合物催化行为选择性氢化作用异亚丙基丙酮一缩二丙酮莱基化氧

THE CHEMICAL MODIFICATION OF E. Coli L-ASPARAGINASE WITH O - CARBOXYMETHYLATED CHITOSAN

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Chinese Journal of Reactive polymers 1998年第1期7卷 49-53页

作者： Li Minqin Ma JianbiaoPan Zaiqun Xu Huixian wang Daobin He Binglin(The state key laboratory of functional polymer materials for adsorption and separation,institute of polymer chemistry, nankai university, tianjin 300071, P. R. china)

Escherichia colt L - asparaginase was modified with O - carboxymethylated chitosan using glutaraldehyde as a coupling agent. The resulting coujugate retained more than 50% of its original enzyme activity under theprot... 详细信息

关键词：化学修饰埃希氏菌属大肠杆菌 L-天门冬酰胺酶羧甲基壳聚糖聚氨基葡糖

SWELLING AND WETTABILITY OF LIGHT-CURED METHACRYLATE-BASED DENTAL RESINS PREPARED FROM CHOLIC ACID

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Chinese Journal of Reactive polymers 2005年第Z1期 35-43页

作者： HU Xiangzheng1,2 ZHANG Xu1 wang Zheng1 HE Binglin1 1 The state key laboratory of functional polymer materials for adsorption and separation, institute of polymer chemistry, nankai university, tianjin 300071, china 2 College of Science, tianjin university of Science and Technology, tianjin 300222, china

2′-methacryloxy-3α, 7α, 12α - trimethacryloyl cholic acid ethyl ester (CAGE4MA) has been prepared from cholic acid. Photo-polymeric resins were prepared from CAGE4MA. 2,2-bis4-(2-hydroxy-3-methacrylyloxypropoxy)phenylpropane (bis-GMA) was used for comparison, triethyleneglycol dimethacrylate (TEGDMA) was used as diluent. The polymerization was initiated by camphoroquinone (CQ)N, N-dimethylaminoethyl methacrylate (DMAEMA) system. The conversion of CAGE4MA was 39% when the reaction time is 60s, which is lower than bis-GMA and TEGDMA. The swelling value of CAGE4MA resin was 0.41% in distilled water, which is much lower than those of bis-GMA resin (2.04%) and TEGDMA resin (4.77%) under the same conditions. Copolymers from CAGE4MA and TEGDMA have been prepared. With the increase of TEGDMA in mixture, the degree of conversion of CAGE4MA and swelling value increased. The swelling values of photocured resins in 0.1molL HCl were also measured.

关键词： Cholic acid Modify Dental material Swelling and wettability.

STUDY ON BIODEGRADABILITY OF POLY (3-HYDROXYBUTYRATE-co-3-HYDROXYVALERATE)/ORGANOPHILIC MONTMORILLONITE NANOCOMPOSITES

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Chinese Journal of Reactive polymers 2004年第Z1期 65-73页

作者： wang Shufang1 SONG Cunjiang2,** CHEN Guangxin1 LIU Jing2 YANG Chao2 ZHANG Xihui2 GUO Tianying1 ZHANG Banghua1 1 state key laboratory of functional polymer materials for adsorption and separation, institute of polymer chemistry, N & T Joint Academy, nankai university, tianjin 300071, china 2 Department of Microbiology, Life Science College, nankai university, tianjin 300071, china

Poly (3-hydroxybutyrate-co-3-hydroxyvalerate)/Organophilic montmorillonite (PHBV/OMMT) nanocomposites were prepared and the biodegradability of the PHBV/OMMT nanocomposites was studied by a cultivation degrading method in soil suspension. The relationship between structure and biodegradability of PHBV/OMMT nanocomposites was investigated. The results showed that the biodegradability of PHBV/OMMT nanocomposites decreased with increasing amount of OMMT and it was related to the number of PHBV degrading microorganisms in degradation environment, the anti-microbial property of OMMT and the degree of crystallinity of the nanocomposites.

关键词： Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Organophilic montmorillonite Biodegradability.

Recent progress in ternary mixed matrix membranes for CO_(2) separation

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Green Energy & Environment 2024年第5期9卷 831-858页

作者： Zikang Qin Yulei Ma Jing Wei Hongfang Guo Bangda wang Jing Deng Chunhai Yi Nanwen Li Shouliang Yi Yi Deng Wentao Du Jian Shen Wenju Jiang Lu Yao Lin Yang Zhongde Dai College of Architecture and Environment Sichuan UniversityChengdu610065China College of Carbon Neutrality Future Technology Sichuan UniversityChengdu610065China National Engineering Research Centre for Flue Gas Desulfurization Chengdu610065China Carbon Neutral Technology Innovation Center of Sichuan Chengdu610065China School of Chemical Biological and Materials EngineeringUniversity of OklahomaNormanOK73019USA Shaanxi key laboratory of Energy Chemical Process Intensification School of Chemical Engineering and TechnologyXi'an Jiaotong UniversityXi'an710049China state key laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan030001China US DOE Natl Energy Technol Lab626 Cochrans Mill RdPittsburghPA 15236USA DongFang Boiler Co. Ltd.China Clean Combustion and Flue Gas Purification key laboratory of Sichuan Province Chengdu611731China College of Environment and Resources Xiangtan UniversityXiangtan411105China

Mixed matrix membranes(MMMs)could combine the advantages of both polymeric membranes and porousﬁllers,making them an effective alternative to conventional polymer ***,interfacial incompatibility issues,such as the presence of interfacial voids,hardening of polymer chains,and blockage of micropores by polymers between common MMMsﬁllers and the polymer matrix,currently limit the gas sep-aration performance of *** phase MMMs(consisting of aﬁller,an additive,and a matrix)made by adding a third compound,usually functionalized additives,can overcome the structural problems of binary phase MMMs and positively impact membrane separation *** review introduces the structure and fabrication processes for ternary MMMs,categorizes various nanoﬁllers and the third component,and summarizes and analyzes in detail the CO_(2) separation performance of newly developed ternary MMMs based on both rubbery and glassy *** on this separation data,the challenges of ternary MMMs are also ***,future directions for ternary MMMs are proposed.

关键词： CO_(2) separation Mixed matrix membranes Ternary phase