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二醋酸纤维素接枝聚甲基丙烯酸甲酯的合成与表征
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
作者姓名:李宁  丁建明  董岸杰  张建华  邓联东
作者单位:(天津大学化工学院,天津 300072)
基金项目:国家自然科学基金资助项目
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。

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

Preparation and Characterization of the Graft Copolymer of Cellulose Diacetate with Poly( Methyl Methacrylate)
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]. Chemical Industry and Engineering, 2012, 29(4): 11-14
Authors:LI Ning    DING Jian-ming    DONG An-jie    ZHANG Jian-hua    DENG Lian-dong
Affiliation:(School of Chemical Engineering and Technology, Tianjin University,Tianjin 300072,China)
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, ~H-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 intro- duction of PMMA. The Mw/Mn of CDA-g-PMMA is effectively controlled by ATRP.
Keywords:cellulose diacetate  atom transfer radical polymerization  grafting  poly ( methyl methacry-late )
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