文章摘要
细菌纤维素气凝胶ARGETATRP接枝聚甲基丙烯酸缩水甘油酯
Grafting Poly(glycidyl methacrylate) on Bacterial Cellulose Aerogels by ARGET ATRP
  
DOI:10.16865/j.cnki.1000-7555.2018.02.003
中文关键词: 细菌纤维素  气凝胶  电子转移活化再生催化剂原子转移自由基聚合  甲基丙烯酸缩水甘油酯
英文关键词: bacterial cellulose  aerogel  electron transfer for atom transfer radical polymerization  glycidyl methacrylate
基金项目:国家自然科学基金资助项目(21302011)
作者单位
刘新华1,2,李 永1,储兆洋1,杨 旭1,王翠娥1,钱 勇1 1.安徽工程大学 纺织服装学院
2.安徽工程大学 纺织行业科技公共服务平台,安徽 芜湖 241000 
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中文摘要:
      以含溴的细菌纤维素气凝胶为引发剂,维生素C(Vc)为还原剂,N,N,N′,N,′N″-五甲基二亚乙基三胺(PMDETA)/溴化铜(CuBr2)为催化剂,通过电子转移活化再生催化剂原子转移自由基聚合(ARGETATRP)方法,制备了含聚甲基丙烯酸缩水甘油酯(PGMA)刷的细菌纤维素气凝胶规整接枝共聚物。采用能谱对大分子引发剂元素含量进行测定,并利用红外光谱、X射线衍射、扫描电镜、热失重分析对其结构和性能进行表征。结果表明,接枝聚合反应可控,大分子引发剂Br元素含量为6.77%;GMA接枝聚合后纤维直径增大且在纤维表面形成覆盖层;起始热分解温度由205℃升高到246℃,热稳定性增强。
英文摘要:
      The regular graft copolymer, BC-g-PGMA was synthesized via electron transfer for atom transfer radical polymerization (ARGET ATRP), using bacterial cellulose aerogels with bromide side-group (BC-Br) as macroinitiator and N,N,N′,N,′N″-pentamethyldiethylenetriamine (PMDETA)/copper(II) bromide (CuBr2) as catalytic system, vitamin C as reducing agent and glycidyl methacrylate (GMA) as comonomer. Spectroscopy (EDS) macroinitiators element content was determined and by infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), thermo-gravimetric analysis (TGA), the structure and properties were characterized. The results indicate that the grafting polymerization of GMA on BC aerogels can be controlled; macroinitiators Br elements can reach 6.77%; the fiber diameter increases after GMA graft polymerization and the coating is formed in the fiber surface layer; the initial thermal decomposition temperature increases from 205 ℃ to 246 ℃, and the thermal stability is improved.
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