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Chinese Journal of Polymer Science 1995年第3期13卷 264-272页

作者：丁黎明林云青周子南倪建龙陈东霖 changchun institute of applied chemistry Academia Sinica Changchun 130022

A new comblike polymer host for polymer electrolyte was synthesized by reacting monomethyl ether of poly(ethylene glycol) with poly(vinyl methyl ether-alt-maleic anhydride) and endcapping the residual carboxylic acid with methanol. Butanone was selected as a solvent for the esterification in order to obtain a completely soluble product. The synthesis process was traced through by LR. Compared with the model compounds, the presumed structure of this comblike polymer has been proved to be valid by C-13 NMR The comb polymer is a white rubbery solid. It can be dissolved in butanone and THF, and manifests good film forming ability.

关键词： COMB-LIKE POLYMER POLY (VINYL METHYL ETHER-ALT-MALEIC ANHYDRIDE) ESTERIFICATION POLYMER ELECTROLYTES IR SPECTRA C-13 NMR SPECTRA

THE RHEOLOGICAL PROPERTIES OF POLYANILINE SOLUTION

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Chinese Journal of Polymer Science 1995年第4期13卷 347-352页

作者：董岸杰景遐斌王伟冯之榴 changchun institute of applied chemistry Academia Sinica Changchun 130022

This paper presents our work on the rheological properties of the solution of polyaniline (PAn) in N-methyl-2-pyrrolidone (NMP). The results indicate that the solution's non-Newtonian property becomes more prominent with the increase in solution concentrations exhibiting the behavior of pseudo-plastic fluid. Besides, there is a critical concentration C-v (around 0.06 g/ml), beyond which the viscosity of the PAn/NMP solution takes a sudden increase. with temperature rising, both the viscosity and the thixotropy of the solution decrease, implying that there exist physical cross-linking interactions between the molecular chains in the solution.

关键词： polyaniline solution viscosity rheological property thixotropy

LITHIUM ION CONDUCTING POLYMER ELECTROLYTES BASED ON ALTERNATING MALEIC ANHYDRIDE COPOLYMER WITH OLIGO-OXYETHYLENE SIDE CHAINS

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Chinese Journal of Polymer Science 1996年第3期14卷 240-247页

作者：丁黎明 changchun institute of applied chemistry Academia Sinica Changchun 130022

A comb polymer with oligo-oxyethylene side chains of the type -(CH2CB2O)(12)CH3 was prepared from methyl vinyl ether/maleic anhydride copolymer and poly (ethylene glycol) methyl ether. The polymer can dissolve LiClO4 salt to form homogeneous amorphous polymer electrolyte. The ac ion conduction was measured using the complex impedance method, and conductivities were investigated as functions of temperatures and salt concentration. The complexes were first found to have two classes of glass transition which increase with increasing salt content, The optimum conductivity attained at 25 degrees C is in the order of 5.50 x 10(-6)Scm(-1). IR spectroscopy was used to study the cation-polymer interaction.

关键词： comb polymer lithium perchlorate ionic conductivity polymer electrolyte glass transition temperature

STUDY ON SEQUENCE DISTRIBUTION OF 3, 4-POLYISOPRENE BY 13C-NMR

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Chinese Journal of Polymer Science 1987年第2期5卷 114-119页

作者：谢德民孙菁 changchun institute of applied chemistry academia sinica changchun changchun institute of applied chemistry academia sinica changchun

Isoprene can be plymerized with Fe（acac）3-phen-AlEt3catalyst system into a polymer mainly containg 3, 4-unit and capable of crystallizing to some extent. The13C-NMR spectra of 3, 4-polyisoprene synthesized: with Fe-catalyst system were investigated, and the: sequence distribution of cis-1, 4, trons-1, 4 and 3, 4-units and the amount of head-to-head and tail-to-tail linkages of 1, 4 and 3, 4-units were discussed. Results showed that the contents of cis-1, 4, trans-1, 4 and 3, 4-unit calculated from different carbon types were satisfactorily identical, indicating correct assignments of these peaks.

关键词： 13C-NMR 3, 4-Polyisoprene Sequence distribution Diene polymerization Fe-catalyst

SULFONATION OF A NEW POLYETHERETHERKETONE PREPARED FROM PHENOLPHTHALEIN

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Chinese Journal of Polymer Science 1990年第3期8卷 217-223页

作者：陈天禄袁雅桂张曼华陈仲庆徐纪平 changchun institute of applied chemistry Academia Sinica Changchun

A novel polyetheretherketone (PEK-C) prepared from phenolphthalein has been synthesized. In order to improve some of its properties for application in high performance membrane, the PEK-C has been sulfonated with concentrated sulfuric acid. Degree of sulfonation can be regulated by controlling the temmperature and time of sulfonation. The characterization of the sulfonated PEK-C in sodium salt form has been made by IR, ~1H NMR and ^(13)C NMR etc. It is shown that the sulfonation appears to take place exclusively in the ortho position to phenolic ether of phenolphthalein unit. The result is in agreement with theoretical deduction. Some properties of the sulfonated PEK-C, such as solubility, transition temperature, thermal degradation and hydrophilicity have also been discussed.

关键词： Polyetheretherketone Phenolphthalein Sulfonation.

PLASMA POLYMERIZATION OF HEXAMETHYLCYCLOTRISILOXANE

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Chinese Journal of Polymer Science 1989年第2期7卷 111-118页

作者：余自力叶牧卢丽珍陈捷 changchun institute of applied chemistry Academia SinicaChangchun

In a capacitively coupled RF discharge system with external electrodes ,hexamethyicyclotrisiloxane was polymerized, and the effects of discharge power and plasma gas on polymer deposition rate were studied. The polymer structures and properties were studied by IR spectroscopy, XPS measurement, PGC/MS combined technique, TG analysis and contact angle measuring. The results showed that the polymers prepared in H_2 or O_2 have higher C/Si ratio in comparison with those prepared in inert gases. PGC/MS results revealed the existence of many short carbon chains in the polymer structure .TG analysis suggested that the polymers prepared in the inert gas would possess better thermal stabilities.

关键词： Plasma Polymerization Hexamethylcyclotrisiloxane

ESR STUDY OF PLASMA-TREATED POLYTETRAFLUOROETHYLENE FILMS

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Chinese Journal of Polymer Science 1990年第4期8卷 347-352页

作者：周茂堂王世才刘桂珍陈捷 changchun institute of applied chemistry Academia Sinica Changchun

The plasma treatment of polytetrafluoroethylene (PTFE) films was carried out in a capacitively coupled reactor with external electrodes. The free radicals generated in the process of treatment were detected by ESR techniques. The ESR spectra tended to indicate that the free radicals of the pLasma-treated PTFE film sample were turned into peroxy radicals on exposure to air. The extrema separation (W) of the ESR spectrum of the peroxy radical increased with the lowering temperature and underwent a sudden change within the temperature range of 170 to 190K. The ESR spectrum observed at 77K was quite different from that observed at room temperature. Finally, the effects of treatment time, input power and system pressure on radical concentration of the treated samples were studied. The attenuation of the peroxy radical at room temperature was also investigated.

关键词： Glow discharge PTFE radical ESR

STUDY ON ACRYLAMIDE-SODIUM ACRYLATE COPOLYMER GELS

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Chinese Journal of Polymer Science 1990年第3期8卷 211-216页

作者：周茂堂李谦徐纪平 changchun institute of applied chemistry Academia Sinica Changchun

Acrylamide-sodium acrylate copolymer hydrogels have been obtained by radiation techniques. Two different methods have been used to introduce—COONa groups into polymer chains of the gels: (1) by partial hydrolysis of acrylamide homopolymer gel; (2) by direct copolymerization and crosslinking of acrylamide and sodium acrylate in aqueous solutions. It was found that the gels obtained in different ways had different properties, the swelling character of the gels obtained by partial hydrolysis were more sensitive to pH of swelling aqueous media, in order to explain these differences, ^(13)C-NMR techniques were used to investigate the sequence distribution of monomer units of both gels.

关键词： Acrylamide Sodium acrylate Radiation Hydrogel Water Retention Value ^(13)C-NMR

POLYMERIZATION MECHANISM OF DIENES WITH HOMOGENEOUS RARE EARTH CATALYSTS

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Chinese Journal of Polymer Science 1990年第2期8卷 121-126页

作者：金鹰泰张喜田裴奉奎吴越 changchun institute of applied chemistry Academia Sinica Changchun

The reaction mechanisms of diene polymerization with homogeneous rare earth catalyst are studied by means of the spectra of ~1H-NMR, one-and two-dimensions ^(13)C-NMR. Based on the data of above NMR spectra, it is proposed that the polymerization reaction proceeds according to the following mechanism: η~4-diene (cis-trans-)and η~3-allyl (syn-anti-).

关键词： Reaction mechanism Diene coordination polymerization Homogeneous rare earth catalyst η~4-diene, η~3-allyl.

A RAMAN-SPECTROSCOPIC STUDY OF PHASE STRUCTURE OF DRAWN POLYETHYLENE

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Chinese Journal of Polymer Science 1993年第1期11卷 76-83页

作者：闫荣江姜炳政 changchun institute of applied chemistry Academia Sinica Changchun 130022

A drawn high density polyethylene（HDPE）has been measured by Raman spectroscopy and differential scanning calorimetry （DSC）. The crystalline structure of drawn HDPE is analysed by the Raman internal modes in terms of mass fractions of the crystalline orthorhombic phase, the liquid- like amorphous phase and the disordered anisotropic phase. The mass fractions depend on draw temperature T;and draw ratio R;. The fraction of disordered anisotropic amorphous phase changes very little with, the T;and increases with increasing R;. Sum of the mass fractions of crystalline orthorhombic phase and the disordered anisotropic phase increases linearly as the same slope as the crystallinity W;determined from DSC measurements with increasing T;or R;and it is higher than the W;for all the samples. The results show that the mass fraction of disordered anisotropic phase is partially devoted by the taut tie molecules （TTM s） in the amorphous state. The dependence of the disordered anisotropic phase on T;and R;supports the mechanism of plastic deformation of fibre structure.

关键词： Polyethylene Raman spectra Drawing Crystalline structure Disordered anisotropic phase.