| Measurement of Crystallinity of Acrylic Copolymer by Swelling Differential Scanning Calorimetry |
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| 作者姓名： | 赵炯心 胡盼盼 吴承训 钱宝钧 |
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| 作者单位： | Zhao Jiongxin，Hu Panpan，Wu Chengxun Qian BaojunMan - made Fiber Research Institute and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials，China Textile University，Shanghai 200051 |
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| 摘 要： | In this paper the measurement of crystallinity(C)ofacrylic copolymer(PAC),by Swelling Differential Scan-ning Calorimetry(SDSC)is discussed.Common DSC isonly used for measuring the crystallinity of polymers withmelting point,(T_m),below their decomposition temper-ature,(T_d).As temperature rises,polymers with swell-ing agent added become swollen and dissolved,goingthrough whole process of breaking solid structures.Thus,SDSC makes it possible to measure the crystallini-ty of polymers even with T_d below T_m.But the C mea-sured by WAXD and the total endothermal melting(swelling)heat in SDSC thermograms,(△H_l),are notlinearly correlated.It has been found that,instead of the△H_l,△H_l'obtained from the △H_l by subtracting the en-dothermal heat,△H_l,and the C measured by WAXDare linearly correlated.On the basis of this linear rela-tion,the unknown C of another PAC sample is measuredby SDSC.The result is in good accordance with thatmeasured by WAXD.
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Measurement of Crystallinity of Acrylic Copolymer by Swelling Differential Scanning Calorimetry |
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| Zhao Jiongxin,Hu Panpan,Wu Chengxun Qian BaojunMan - made Fiber Research Institute and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,China Textile University,Shanghai.Measurement of Crystallinity of Acrylic Copolymer by Swelling Differential Scanning Calorimetry[J].Journal of Donghua University,2000(1). |
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| Authors: | Zhao Jiongxin Hu Panpan Wu Chengxun Qian BaojunMan - made Fiber Research Institute and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials China Textile University Shanghai |
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| Institution: | Zhao Jiongxin,Hu Panpan,Wu Chengxun Qian BaojunMan - made Fiber Research Institute and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,China Textile University,Shanghai 200051 |
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| Abstract: | |
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| Keywords: | differential scanning calorimetry polyacryloni- trile crystallinity swelling computational resolution of overlapping peaks |
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