二醋酸纤维素接枝聚甲基丙烯酸甲酯的合成与表征

摘要以二醋酸纤维素（CDA）为接枝骨架，利用原子转移自由基聚合(ATRP)技术接枝聚甲基丙烯酸甲酯(PMMA)，合成接枝共聚物(CDA-g-PMMA)，采用FT-IR、1H-NMR、DSC、XRD和GPC等方法表征了CDA-g-PMMA的结构与物化性能，结果显示，支链PMMA的引入，降低了材料的熔融温度和结晶度，另外还增加了材料的韧性,ATRP方法有效的控制了共聚物相对分子质量分布系数。

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	李宁
	丁建明
	董岸杰
	张建华
	邓联东

关键词：二醋酸纤维素原子转移自由基聚合接枝聚甲基丙烯酸甲酯

Abstract： A novel grafting copolymer (CDA-g-PMMA) was obtained by means of atom transfer radical polymerization (ATRP) grafting poly(methyl methacrylate) (PMMA) onto cellulose diacetate (CDA) backbone. The structure and properties of CDA-g-PMMA were characterized by FT-IR, 1H-NMR, DSC, XRD and GPC. The results of DSC and XRD show that the melting temperature and crystallinity of the copolymer are lowered. In addition, the plasticity of CDAgPMMA is better than CDA due to the introduction of PMMA. The Mw/Mn of CDA-g-PMMA is effectively controlled by ATRP.

Keywords： cellulose diacetate atom transfer radical polymerization grafting poly(methyl methacrylate)

Fund:

国家自然科学基金资助项目（51103097）。

引用本文:

李宁, 丁建明, 董岸杰, 张建华, 邓联东.二醋酸纤维素接枝聚甲基丙烯酸甲酯的合成与表征[J]. 化学工业与工程, 2012,29(4): 11-14

LI Ning, DING Jian-Ming, DONG An-Jie, ZHANG Jian-Hua, DENG Lian-Dong.Preparation and Characterization of the Graft Copolymer of Cellulose Diacetate with Poly(Methyl Methacrylate)[J]. Chemcial Industry and Engineering, 2012,29(4): 11-14