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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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一种以聚酰亚胺为主链的分子刷合成及表征
DOI: 10.3724/SP.J.1105.2012.11149, PP. 239-249
Keywords: 嵌段共聚物,自组装,表面粘弹性,分子聚集体
Abstract:
以自制的侧基含溴的聚酰亚胺为大分子引发剂,2,2′-联吡啶/氯化亚铜为催化体系,通过原子转移自由基聚合(ATRP)反应,引发甲基丙烯酸三氟乙酯(TFEMA)和甲基丙烯酸2-(三甲基硅氧基)乙酯(HEMA-tms)共聚,制备了以聚酰亚胺为主链的分子刷,聚酰亚胺-接枝-聚(甲基丙烯酸三氟乙酯-共-甲基丙烯酸2-(三甲基硅氧基)乙酯),(PI-g-P(TFEMA-co-HEMA-tms)).对其中甲基丙烯酸2-(三甲基硅氧基)乙酯进行水解得到侧链含羟基的聚酰亚胺分子刷(PI-g-P(TFEMA-co-HEMA)),最后通过羟基与氯磷酸二乙酯反应,得到含亚磷酸酯基团的聚酰亚胺分子刷(PI-g-P(TFEMA-co-HEMA-P)).利用核磁共振氢谱(1H-NMR)、红外等方法,表征了所合成分子刷的结构.利用示差扫描量热法(DSC)、热失重分析(TGA)研究了聚合物分子刷的热性能.根据TGA计算出的分子刷组成与1H-NMR计算结果能较好的吻合.
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