| ASSOCIATION OF ETHYLENE—VINYL ACETATE COPOLYMER IN DILUTE SOLUTIONS Ⅲ. CRITICAL ASSOCIATION CONCENTRATION* |
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| 引用本文： | 钱锦文,李劲,杨云松,戚国荣.ASSOCIATION OF ETHYLENE—VINYL ACETATE COPOLYMER IN DILUTE SOLUTIONS Ⅲ. CRITICAL ASSOCIATION CONCENTRATION*[J].高分子科学,1998,0(4):327-331. |
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| 作者姓名： | 钱锦文 李劲 杨云松 戚国荣 |
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| 作者单位： | Department of Polymer Science and Engineering，Zhejiang University，hangzhou 310027，China，Department of Polymer Science and Engineering，Zhejiang University，hangzhou 310027，China，Department of Polymer Science and Engineering，Zhejiang University，hangzhou 310027，China，Department of Polymer Science and Engineering，Zhejiang University，hangzhou 310027，China |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China(No.29474168) |
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| 摘 要： | Association behavior of ethylene vinyl acetate (EVA) copolymer in foursolvents 1, 2-dichloroethane (DCE), cyclohexane (CYH), xylene (XYL) and chloroform(CF) has been investigated by dilute solution viscometry The critical association concen-tration (C_A) was determined at which the incipient decrease in slope of the η_(sp)/C～ Ccurve in solutions at the dilute regime. Our results showed that whether the CA couldexist depends on solvent property. The values of CA in DCE increase with increasing, oftemperature and vinyl acetate (VA) content in EVA and decreasing of molecular weight ofEVA.
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| 收稿时间： | 1997-06-28 |
ASSOCIATION OF ETHYLENE—VINYL ACETATE COPOLYMER IN DILUTE SOLUTIONS Ⅲ. CRITICAL ASSOCIATION CONCENTRATION* |
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| Qian Jinwen,Li Jing,Yang Yunsong,Qi Guorong.ASSOCIATION OF ETHYLENE—VINYL ACETATE COPOLYMER IN DILUTE SOLUTIONS Ⅲ. CRITICAL ASSOCIATION CONCENTRATION*[J].Chinese Journal of Polymer Science,1998,0(4):327-331. |
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| Authors: | Qian Jinwen Li Jing Yang Yunsong Qi Guorong |
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| Institution: | Department of Polymer Science and Engineering; Zhejiang University; hangzhou 310027; China |
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| Abstract: | Association behavior of ethylene vinyl acetate (EVA) copolymer in foursolvents 1, 2-dichloroethane (DCE), cyclohexane (CYH), xylene (XYL) and chloroform(CF) has been investigated by dilute solution viscometry The critical association concen-tration (CA) was determined at which the incipient decrease in slope of the ηsp/C～ Ccurve in solutions at the dilute regime. Our results showed that whether the CA couldexist depends on solvent property. The values of CA in DCE increase with increasing, of temperature and vinyl acetate(VA) content in EVA and decreasing of molecular weight of EVA. |
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| Keywords: | Association Dilute solution Viscometry |
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