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THE SYNTHESIS AND CHARACTERIZATION OFPOLY-L-LACTIDE USED FOR THE INTERNALFIXATION OF BONE FRACTURE

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Chinese Journal of Reactive Polymers 1998年第2期7卷 1-6页

作者： zhang zhengpu Lu ge Wu Zhizhong He Binglin State key Laboratory of Functional Polymer Materials for Adsorption and Separation Institute of Polymer Chemistry Nankai UniversityTianjin 300071

A high Mw of PLLA was synthesized, it intended to be used in the manufacture ofbioabsorbable screw applied in bone fracture internal fixation. The optical reactionconditions have been discussed.

关键词： Poly-L-lactic acid Bioabsorbable Bone fracture internal fixation

THE SEPARATION,PURIFICATION AND DECOLORIZATION OF NEW ANTIBIOTICS-MILUPEINAN USING ADSORPTION RESIN

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Chinese Journal of Reactive Polymers 2002年第1期11卷 85-90页

作者： zhang Yifeng GUO Hong zhang Guangming YAN Xiuyun YINShougen zhang zhengpu Institute of Taitai Pharmaceutical Co.Ltd Shengzhen 518057China State Key Lab.of Functional Polymeric Materials for Adsorption and Separation Institute of Polymer Chemistry Nankai UniversityTianjin 300071China

Adsorption resin AAS was used for the separation and purification of milupeinan (M-13) from its mother liquor. The good adsorption property of AAS adsorption resin was found for milupeinan (M-13) compared with the Diaion CHP 20p. When acetone and water (2:1 in volume) were used as desorption reagents, it was found that 3 times of bed volume of the desorption reagents would make the AAS resin which was saturately adsorpted M-13 desorption completely. Also a macroporous anion exchange resin (Poly-4-vinylpyridine type) D-280 was used for the decolourization from M-13 solution. Good results was given when the sv=1~2.

关键词： AAS adsorption resin D-280 decoloulization resin Milupeinan (M-13)

聚丙烯纤维预辐照接枝制备弱碱性离子交换纤维及其对链霉素的吸附

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离子交换与吸附 2008年第4期24卷 320-328页

作者：白明张政朴南开大学功能高分子材料教育部重点实验室

以γ-射线预辐照,在聚丙烯(PP)纤维上接枝丙烯酰胺(AAm),再经过Hofmann降解反应制备弱碱性离子交换纤维(PP-g-VAm)交换容量达到5.47mmol/g干纤维。研究了PP-g-VAm纤维对链霉素的吸附和解吸性能。其吸附等温曲线符合Langmiur吸附等温式... 详细信息

以γ-射线预辐照,在聚丙烯(PP)纤维上接枝丙烯酰胺(AAm),再经过Hofmann降解反应制备弱碱性离子交换纤维(PP-g-VAm)交换容量达到5.47mmol/g干纤维。研究了PP-g-VAm纤维对链霉素的吸附和解吸性能。其吸附等温曲线符合Langmiur吸附等温式。静态吸附试验表明,PP-g-AAm纤维对链霉素的吸附量可以达到446.96mg/g干纤维,脱附率达到98.9%。

关键词：聚丙烯预辐照接枝阴离子交换纤维 Hofmann降解链霉素

DEGRADATION AND PROCESSING OF PLA AND ITS APPLICATION IN FIXATION OF BONE FRACTURE

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Chinese Journal of Reactive Polymers 1999年第1期8卷 102-109页

作者： HU Yushan BAI Dongren zhang zhengpu WANG Yongmei HE Binglin State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation Institute of Polymer Chemistry Nankai UniversityTianjin 300071 Department of Chemistry Nankai UniversityTianjin 300071

PLA is presently considered as the most attractive compound for temporarytherapeutic application in the biomedical field. In this paper we give an overview of thepresent knowledge on the degradation behavior,processin... 详细信息

关键词： PLA Degradation Processing Bone fracture fixation Review

PREPARATION OF PARTICLE SIZE NARROWLY DISTRIBUTED LOW-DENSITY STYRENE DIVINYLBENZENE COPOLYMER MICROBEADS

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Chinese Journal of Reactive Polymers 2002年第2期11卷 157-161页

作者： FAN Huili zhang zhengpu WEN Meijuan LIU Jiemin TIAN Weixue Applied Science School University ofScience and Technology BeijingBeijing 100083 Institute of Polymer Chemistry Nankai UniversityTianjin 300071China

In view of the importance of dispersion agent,the amount of the crosslinking monomer and the diluent in suspension polymerization for the production of particle size narrowly distributed low-density stryene divinylbenzene copolymer microbeads(LDPS),their actions are preliminarily investigated in this *** results indicate that when both the gelatine and polyvinyl alcohol(PVA)are used dispersion agents,the better effect is achieved,DVB is helpful to the formation of the lower density fine particles,the proportionof the DVB/St should be between 1:1-1.5:*** with toluene,gasoline is the more effective diluent for the above target.

关键词： Low-density Styrene-divinylbenzene copolymer Microbeads Particle size

THE SYNTHESIS OF TWO KINDS OF POLYMER-SUPPORTED ASYMMETRIC PHASE TRANSFERCATALYSTS(PS-PTCS)AND THE COMPARISON OFTHEIR CATALYTIC ACTIVITIES

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Chinese Journal of Reactive Polymers 1999年第1期8卷 90-94页

作者： zhang zhengpu HUANG Jinxia LI Mingxia HU Yushan HE Binglin State Key Lab of Functional Polymer Materials for Adsorption and Separation Institute ofPolymer Chemistry Nankai UniversityTianjin 300071 Chemistry Department Hubei University Wuhan 430062

In this paper,two kinds of PS-PTCs were synthesized using different methods byintroducing cinchonine and quinine to the polymer support. Their catalytic properties forthe alkylation of N-diphenylmethylene glycine t-bu... 详细信息

关键词： PS-PTC a -Amino acid Asymmetric synthesis

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γ-射线辐照接枝制备几种功能性高分子材料

高分子学报 2008年第7期18卷 639-643页

作者：韩晓燕张政朴南开大学高分子化学研究所功能高分子材料教育部重点实验室(南开大学)

概述了近几年来本研究组在高分子材料辐照接枝制备功能性高分子材料方面的研究进展.分别以丙烯酸、顺丁烯二酸、苯乙烯接枝聚四氟乙烯纤维,制备了不同酸性的聚四氟乙烯功能纤维.以N-异丙基丙烯酰胺接枝壳聚糖制备温度及pH敏感材料,获得... 详细信息

概述了近几年来本研究组在高分子材料辐照接枝制备功能性高分子材料方面的研究进展.分别以丙烯酸、顺丁烯二酸、苯乙烯接枝聚四氟乙烯纤维,制备了不同酸性的聚四氟乙烯功能纤维.以N-异丙基丙烯酰胺接枝壳聚糖制备温度及pH敏感材料,获得了性能特异的新型功能性高分子材料.报道了该类新型功能高分子材料的各种特异性能,如对金属离子优异的分离、吸附和解吸性能、超强酸性和一系列潜在用途.

关键词：辐照接枝聚四氟乙烯纤维离子交换壳聚糖敏感材料

1 ,3 ,2-Oxazaphospholidine Derivatives(I)——The Synthessa of 2 - Diethylamino- 3-arylsulfonyl- 1,3,2-Oxazaphospholidine and Its 2-thiono Deiativea and Their Properties

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Chemical Journal of Chinese Universities 1988年第1期 30-37页

作者： Yang Huazheng, Cui Shuhua, zhang zhengpu and Chen Ruyu(Institute of Elemento-Organic Chemistry, Nankai University, Tianjin)

A series of new 2-diethylamino-3-substituted phenylsulfonyl-1,3,2-oxazaphospholidine derivatives (Ⅰ) has been synthesized by the reaction of tris(diethylamino) phosphine with N-(β-hydroxyethyl) substitutedphenylsulfonamides. When was refluxed with sulfur in benzene, the 2-thiono derivatives (Ⅱ) was obtained conveniently.(Ⅰ) was easily oxidized in air and the diethylamino group could be substituted by phenoxy or other amino group giving the corresponding derivatives. Their H NMR and MS spectra have been discussed. Some of compounds (Ⅱ) have herbicidal activities.

关键词： Oxazaphospholidine and Its 2-thiono Deiativea and Their Properties The Synthessa of 2 arylsulfonyl Diethylamino Oxazaphospholidine Derivatives

辐射接枝苯乙烯和磺化对聚四氟乙烯强酸性纤维力学性能的影响

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离子交换与吸附 2007年第6期23卷 519-530页

作者：魏俊富李慧张政朴天津市改性与功能纤维重点实验室天津工业大学材料化工学院吸附分离功能高分子教育部重点实验室南开大学高分子化学研究所

采用共辐射引发将苯乙烯接枝到聚四氟乙烯(PTFE)纤维上后,然后磺化可以制备出强酸性离子交换纤维PTFE-g-St-SO3H。辐射、磺化和氧气可以使纤维力学性能大幅度下降,当接枝率较低时,断裂强度高于原纤维,随着接枝率的增大,断裂强度呈下降... 详细信息

采用共辐射引发将苯乙烯接枝到聚四氟乙烯(PTFE)纤维上后,然后磺化可以制备出强酸性离子交换纤维PTFE-g-St-SO3H。辐射、磺化和氧气可以使纤维力学性能大幅度下降,当接枝率较低时,断裂强度高于原纤维,随着接枝率的增大,断裂强度呈下降趋势。轻度交联能够改善纤维的力学性能,但是对纤维力学性能的影响比接枝率小。断裂强度与磺化率关系不大,主要受磺化反应温度影响,反应温度越高,断裂强度越低,断裂伸长率也相应较低。磺化后模量大幅度降低,断裂伸长率和屈服伸长率显著增大,断裂强度明显降低,纤维韧性提高。采用氮气保护,控制适当接枝率和较低磺化反应温度可以得到力学性能较好的PTFE基强酸性离子交换纤维。

关键词：聚四氟乙烯纤维辐射接枝苯乙烯磺化力学性能