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OALib Journal期刊
ISSN: 2333-9721
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微晶纤维素argetatrp接枝共聚制备pmma和pmaa-na的研究
DOI: 10.3969/j.issn.1000-2006.2014.01.022, PP. 125-129
Keywords: argetatrp,微晶纤维素,可控聚合,分子质量分布
Abstract:
使用再生电子转移生成催化剂原子转移自由基聚合(argetatrp)方法,在微晶纤维素表面分别接枝了甲基丙烯酸甲酯(mma)和甲基丙烯酸钠(maa-na),ft-ir图谱和sem照片证明纤维素基表面成功接枝聚甲基丙烯酸甲酯(pmma);凝胶渗透色谱分析表明pmma的分子质量分布较窄,mw/mn=1.12,说明argetatrp实现了对接枝侧链分布均一性的有效控制。maa-na单体的转化率随反应时间的增加而增加,可在接枝侧链分布均一性的基础上通过调整反应时间实现侧链长度的有效可控。argetatrp可实现对微晶纤维素表面接枝侧链分布和长度的控制。
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