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SYNTHESIS AND CRYSTALLIZATION BEHAVIOR OF POLY(ETHER ETHER KETONE ETHER KETONE)(PEEKEK)

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chinese Journal of polymer Science 2000年第2期18卷 129-132页

作者： Zhao-bin Qiu zhi-shen {2. Ying-ning Yu Hong-fang Zhang Xian-hong Wang polymer physics laboratory, changchun institute of Applied chemistry, chinese academy of sciences,{12., china chinese Acad Sci Changchun Inst Appl Chem Polymer Phys Lab Changchun 130022 Peoples R China

In this paper, the synthesis and crystallization behavior of poly(ether ether ketone ether ketone) (PEEKEK) are reported. PEEKEK was prepared from 4,4'-bis(p-fluorobenzoyl) diphenyl ether (4,4'-FBDE) and hydroquinone along the nucleophilic substitution route. The thermal properties were investigated by using DSC and TGA. The crystallization behavior of PEEKEK under several conditions, i.e., crystallization from the molten state (melt crystallization), crystallization from a quenched sample (cold crystallization) and crystallization induced by exposing glassy sample to methylene chloride (solvent-induced crystallization) has also been investigated. The results show that crystallization of PEEKEK could be induced by the above methods, and no polymorphism was found. The differences in the crystallization of PEEKEK induced by the above methods are seen in their degree of crystallinity.

关键词： poly(aryl ether ketone)s synthesis crystallization

Studies on the influence of heat treatment on polyamide-1010 structure

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chinese Chemical Letters 1993年第6期4卷 563-564页

作者： Hong Fang ZHANG Bao Quan YANG Li Hua ZHANG zhi shen {2. polymer physics laboratory,changchun institute of Applied chemistry,Academia Sinica,changchun,13002.

In this work,the influence of heat treatment on Polyamide-1010 structure of aggregation state was studied by using WAXD and SAXS *** results showed that the best crystallinity was obtained nearby T=175℃ for Polyamide-1010 samples with various annealing *** extrapolating method,the Tg obtained was approximately 58℃.Based on the one-dimensional electron density correlation function of partially crystalline polymers,some structural parameters of Polyamide-1010 were determined by SAXS.

关键词： PA Studies on the influence of heat treatment on polyamide-1010 structure SAXS heat

Microstructure Analysis of Nylon 66 by WAXD and SAXS

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Chemical Research in chinese Universities 2002年第3期18卷 358-363页

作者： ZHANG Qing xin FU Peng peng ZHANG Hong fang mo zhi {2. state key {2. of polymer physics and chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022P.R.China

The analysis of the small angle X ray scattering(SAXS) data was based upon particle characteristic function, one dimensional electron density correlation function and particle distribution function. The microstructure of nylon 66 with different degrees of crystallinity was studied by means of X ray scattering method. The radius of gyration R g, the Porod radius R p, the thickness of crystalline region L c, the thickness of non crystalline region L a, the thickness of interphase region d tr , the long period L , the semiaxises of particles( a, a, b ), the distribution of the particle sizes and the scattering invariant were calculated. The results indicate that there was a significant interphase region between the crystalline region and the non crystalline region, and its content( W t,x ) should not be neglected in comparison with that of crystalline region W c,x . The morphology of nylon 66 prepared by isothermal crystallization at a high temperature was mainly a lamellar structure, while the spherical crystals dominated in the quenched sample. The size of the particles in the quenched sample was smaller than that of those in the isothermally crystallized sample, and the distribution of the particle sizes in the isothermally crystallized sample was wider.

关键词： Nylon 66 SAXS WAXD

MISCIBILITY,CRYSTALLIZATION AND MECHANICAL PROPERTIES OF PPC/PBS BLENDS

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chinese Journal of polymer Science 2007年第6期25卷 589-597页

作者： Hui-liang Zhang Xiao-hong Sun Qing-yong Chen Min-qiao Ren zhi-hao Zhang Hong-fang Zhang zhi-{2. mo state key {2. of polymer physics and chemistry Changchun Institute of Applied Chemistry Graduate School of Chinese Academy of Science Changchun 130022 China

In this paper, melt blends of poly（propylene carbonate）（PPC） with poly（butylene succinate）（PBS） were characterized by dynamic mechanical analysis （DMA）, differential scanning calorimetry （DSC）, tensile testing, wide-angle X-ray diffraction （WAXD）, polarized optical microscopy and thermogravimetric analysis （TGA）. The results indicated that the glass transition temperature of PPC in the 90/10 PPC/PBS blend was decreased by about 11 K comparing with that of pure PPC. The presence of 10% PBS was partially miscible with PPC. The 90/10 PPC/PBS blend had better impact and tensile strength than those of the other PPC/PBS blends. The glass transition temperature of PPC in the 80/2., 70/30, and 60/40 PPC/PBS blends was improved by about 4.9 K, 4.2.K, and 13 K comparing with that of pure PPC, respectively; which indicated the immiscibility between PPC and PBS. The DSC results indicated that the crystallization of PBS became more difficult when the PPC content increased. The matrix of PPC hindered the crystallization process of PBS. While the content of PBS was above 2.%, significant crystallization-induced phase separation was observed by polarized optical microscopy. It was found from the WAXD analysis that the crystal structure of PBS did not change, and the degree of crystallinity increased with increasing PBS content in the PPC/PBS blends.

关键词： Poly(propylene carbonate) Poly(butylene succinate) Miscibility Crystallization Mechanical properties.

Effects of Heat Treatment on the Crystallization Behavior of Poly(3-alkylthiophenes)

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Chemical Research in chinese Universities 2002年第3期18卷 364-366页

作者： QIAO Xiu-ying WANG Xian-hong NA Tian-hai mo zhi-{2. state key {2. of polymer physics and chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022P.R.China

Poly (3-alkylthiophenes) (P3ATs), as a new kind of soluble, fusible and processable conductive polymers, have attracted a great interest and much attention of chemists and physicists. It has been widely accepted that P3ATs can form similar lay-ered structures with alkyl side chains being orient-ed in the lateral a-axis direction. moreover, when the number of the carbon atoms in the alkyl side chains is more than 10, some orderly arrangement of the side chains will occur between the layers.

关键词： Heat treatment Crystallization Poly(3 alkylthiophenes)

Effects of Branches on the Crystallization Kinetics of Polypropylene-gPolystyrene and Polypropylene-g-Poly(n-butyl acrylate) Graft Copolymers with Well-defined molecular Structures

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chinese Journal of polymer Science 2014年第3期32卷 333-349页

作者： Lu Wang zhi-wei Jiang Feng Liu zhi-jie Zhang 唐涛 state key {2. of polymer physics and chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences University of chinese academy of {2.

Effects of branches on the crystallization kinetics of polypropylene-g-polystyrene （PP-g-PS） and polypropylene-g- poly（n-butyl acrylate）（PP-g-PnBA） graft copolymers with well-defined molecular structures were systematically investigated by DSC. The Avrami equation was used to analyze the isothermal crystallization process, while the analysis of nonisothermal crystallization process was based on the Jeziorny-modified Avrami model and mo model. The kinetics results of isothermal and nonisothermal crystallization verified the peculiar effects of branches on the crystallization process of PP backbones in PP-g-PS and PP-g-PnBA graft copolymers： on one hand, the interaction between branches （n-n interaction between PS branches, or dipole-dipole interaction between PnBA branches） restrained the mobility and reptation ability of the PP backbones, which hindered the crystallization process; on the other hand, the heterogeneous nucleation effect resulting from the branched structure and fluctuation-assisted nucleation mechanism （caused by microphase separation between the PS or PnBA rich phase and the PP rich phase） became more pronounced with increasing branch length, which facilitated the crystallization process.

关键词： Polypropylene Polypropylene-g-polystyrene graft copolymer Polypropylene-g-poly(n-butyl acrylate) graftcopolymer Isothermal crystallization Nonisothermal crystallization.

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中国改革开放以来的高分子物理和表征研究

高分子学报 2019年第10期50卷 1047-1067页

作者：安立佳陈尔强崔树勋董侠傅强韩艳春何嘉松胡文兵胡祖明江明李宝会李良彬李林李卫华林嘉平吕中元门永锋沈志豪孙平川童真王笃金武培怡谢续明徐坚徐志康薛奇闫寿科杨玉良俞炜俞燕蕾张广照张军张俐娜张平文张文科赵江郑强周东山中国科学院长春应用化学研究所长春130022 北京大学化学与分子工程学院北京100871 西南交通大学材料先进技术教育部重点实验室成都610031 中国科学院化学研究所北京100090 四川大学高分子科学与工程学院成都610065 南京大学化学化工学院南京210023 东华大学纤维材料改性国家重点实验室上海200051 复旦大学高分子科学系上海200433 南开大学物理学院天津300071 中国科技大学国家同步辐射实验室合肥230026 北京师范大学化学学院北京100875 华东理工大学材料科学与工程学院上海200237 吉林大学理论化学研究所长春130023 华南理工大学材料科学与工程学院广州510640 清华大学化工系北京100084 浙江大学高分子科学与工程学系杭州310027 北京化工大学材料科学与工程学院北京100029 上海交通大学化学化工学院上海200240 武汉大学化学与分子科学学院武汉430072

本综述介绍了改革开放四十多年来中国大陆学者在高分子物理和表征领域所取得的部分成就.按照时间顺序,分别从概念的突破、理论的发展和技术的创新三个方面选取具有代表性研究成果进行简短的介绍,以期展示当代中国学者在这一基础研究领... 详细信息

本综述介绍了改革开放四十多年来中国大陆学者在高分子物理和表征领域所取得的部分成就.按照时间顺序,分别从概念的突破、理论的发展和技术的创新三个方面选取具有代表性研究成果进行简短的介绍,以期展示当代中国学者在这一基础研究领域所表现出来的拼搏意志和创新精神,激励新一代学者共同努力,勇攀科学高峰,为国民经济和社会发展作出更大的贡献.

关键词：高分子物理高分子表征相分离结晶流变和力学性质