| (乙酸乙烯酯-co-丙烯酸)共聚物的合成、醇解及产物水溶性研究 |
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| 引用本文： | 杨同禄,冯海柯,淡宜. (乙酸乙烯酯-co-丙烯酸)共聚物的合成、醇解及产物水溶性研究[J]. 化学研究与应用, 2009, 21(4) |
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| 作者姓名： | 杨同禄 冯海柯 淡宜 |
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| 作者单位： | 高分子材料工程国家重点实验室(四川大学)四川大学高分子研究所,成都,610065 |
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| 摘 要： | 用乙酸乙烯酯(VAc)和丙烯酸(AA)进行溶液聚合制备(乙酸乙烯酯-co-丙烯酸)共聚物[P(VAc-co-AA)],研究了不同单体投料比时的聚合反应速率,结果表明:反应时间一定,随AA含量增加,聚合反应速率降低,转化率降低;反应5小时后,不同AA含量体系的转化率差别减小;傅里叶变换红外吸收光谱(FTIR)和核磁共振氢谱(1H-NMR)测试结果表明AA与VAc发生共聚.用氢氧化钠(NaOH)作为催化剂对P(VAc-co-AA)进行醇解制得产物聚乙烯醇(PVA),通过X-射线衍射(XRD)测定了醇解产物结晶度,进一步考察了醇解产物在70℃水中的溶解性.结果表明:与聚乙酸乙烯酯(PVAc)的醇解产物相比,P(VAc-co-AA)的醇解产物结晶度有所下降,在水中的溶解性提高.
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| 关 键 词： | 乙酸乙烯酯(VAc) 丙烯酸(AA) 共聚 醇解 水溶性 |
Research on the copolymerization of VAc with AA and the alcoholysis of the obtained copolymers |
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| YANG Tonglu,FENG Haike,DAN Yi. Research on the copolymerization of VAc with AA and the alcoholysis of the obtained copolymers[J]. Chemical Research and Application, 2009, 21(4) |
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| Authors: | YANG Tonglu FENG Haike DAN Yi |
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| Affiliation: | State Key Laboratory of Polymer Materials Engineering of China Sichuan University |
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| Abstract: | In this paper,P(VAc-co-AA) was prepared through copolymerization of acrylic acid(AA) and vinyl acetate(VAc),under the atmosphere of nitrogen gas using methanol and 2,2'-azobis(isobutyronitle)(AIBN) as solvent and initiator,respectively.And the structure of the P(VAc-co-AA) was analyzed by 1H-NMR and Fourier transformed infrared(FTIR) spectroscopy.Polyvinyl alcohol(PVA) was further prepared by alcoholysis of P(VAc-co-AA) using sodium hydroxide(NaOH) as a catalyst.The crystallinity of PVA was measured with X-... |
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