A New Hyperbranched Poly(arylene−ether−ketone−imide): Synthesis, Chain-End Functionalization, and Blending with a Bis(maleimide)
作者:Jong-Beom Baek、Haihu Qin、Patrick T. Mather、Loon-Seng Tan
DOI:10.1021/ma020066+
日期:2002.6.1
The latter was synthesized in three steps starting from commercially available 5-nitroisophthalic acid. The AB2 monomer was then polymerized via aromatic fluoride-displacement reaction to afford the corresponding hydroxyl-terminated hyperbranched polymer, HT-PAEKI, which was then functionalized with allyl and propargyl bromides as well as epichlorohydrin to afford allyl-terminated AT-PAEKI, propargyl-terminated
尽管芳族聚酰亚胺已被广泛用作高性能聚合物,但本工作通过使用超支化方案解决了对有机可溶性预酰亚胺化材料的需求。AB 2单体,N- [3,5-双(4-羟基苯甲酰基)苯] -4-氟邻苯二甲酰亚胺,是由4-氟间苯二甲酸酐和3,5-双(4-羟基苯甲酰基)苯胺制备的。从市售的5-硝基间苯二甲酸开始,由三个步骤合成后者。AB 2然后将单体通过芳族氟化物置换反应聚合,得到相应的羟基封端的超支化聚合物HT-PAEKI,然后将其用烯丙基和炔丙基溴以及环氧氯丙烷官能化,得到烯丙基封端的AT-PAEKI,炔丙基封端的PT -PAEKI,和环氧(缩水甘油基)封端的ET-PAEKI,按此顺序。所有超支化聚(醚-酮-酰亚胺)都可溶于常见的有机溶剂。NMP中HT-,AT-,PT-和ET-PAEKI的固有粘度依次为0.13、0.08、0.08和0.08 dL / g。AT-PAEKI由于在269°C下发生克莱森重排和在34