Aqueously soluble semi-aromatic copolyamides with dual-functional groups as sizing agent
Aqueously soluble semi-aromatic copolyamides with dual-functional groups as sizing agent
复制标题
水溶性双官能团半芳香族共聚酰胺作为施胶剂
DOI：
10.1002/app.47132
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发表时间：
2019-03-05
影响因子：
3
通讯作者：
Zhang, F.
中科院分区：
文献类型：
--
作者：
Qi, X.;Wang, W.;Zhang, F.
通过聚[(亚乙基二氧基)双(乙烯)对苯二甲酰胺]的固相克莱森重排反应制备了一系列新型水溶性半芳香(共)聚酰胺，聚[(亚乙基二氧基)双(亚乙基)对苯二甲酰胺]-无规-聚[(亚乙基二氧基)双(亚乙基)(2,5-二羟基-3,6-二烯丙基)对苯二甲酰胺](CRPAOT-x)。 [对苯二甲酰胺]-无规-聚[(乙撑二氧基)双(乙烯)2,5-双(烯丙氧基)对苯二甲酰胺](APAOT-x)，其中x(=0、13、25、50、75和100)代表含烯丙氧基单元的摩尔分数。 APAOT-x是由对苯二甲酰氯、2,5-双(烯丙氧基)对苯二甲酰氯和2,2-(乙撑二氧基)双(乙胺)进行界面共聚得到。优化了反应条件，包括反应物浓度、温度和溶剂。通过质子核磁共振 (H-1 NMR) 和傅里叶变换红外光谱对目标（共）聚酰胺及其前体的化学结构进行了表征。亲水性（乙撑二氧基）双（乙烯）单元的引入大大提高了聚合物的溶解度。 CRPAOT-x不仅能溶解在二甲基甲酰胺、二甲基亚砜、N-甲基吡咯烷酮等极性有机溶剂中，还能溶解在氨水中。由于羟基和富氧脂肪族单元的存在，CRPAOT-x 对环氧树脂表现出优异的亲和力。微粘合测试表明，由这些双功能聚合物施胶的芳纶纤维在环氧基质中表现出显着增强的界面剪切强度。 (c) 2018 Wiley periodicals, Inc. J. Appl。聚合物。科学。 2019, 136, 47132。
A series of novel aqueously soluble semi-aromatic (co)polyamides, poly[(ethylenedioxy)bis(ethylene) terephthalamide]-ran-poly[(ethylenedioxy)bis(ethylene) (2,5-dihydroxy-3,6-diallyl)terephthalamide] (CRPAOT-x), were prepared via the solid-state Claisen rearrangement reaction of poly[(ethylenedioxy)bis(ethylene) terephthalamide]-ran-poly[(ethylenedioxy)bis(ethylene) 2,5-bis(allyloxy)terephthalamide] (APAOT-x), where x (= 0, 13, 25, 50, 75, and 100) represents the molar fraction of allyloxy containing unit. APAOT-x was obtained through the interfacial copolymerization of terephthaloyl chloride, 2,5-bis(allyloxy)terephthaloyl chloride, and 2,2-(ethylenedioxy)bis(ethylamine). The reaction conditions including reactant concentration, temperature, and solvent were optimized. The chemical structures of the target (co)polyamides and their precursors were characterized by proton nuclear magnetic resonance (H-1 NMR) and Fourier transform infrared spectroscopies. The incorporation of hydrophilic (ethylenedioxy)bis(ethylene) units greatly improved the polymer solubility. CRPAOT-x dissolved not only in polar organic solvents such as dimethylformamide, dimethyl sulfoxide, and N-methyl pyrrolidone but also in ammonia water. Due to the presence of hydroxyl groups and oxygen-rich aliphatic units, CRPAOT-x showed excellent affinity toward epoxy resins. The microbond test indicated that the aramid fibers sized by these dual-functional polymers exhibited remarkably enhanced interfacial shear strength in epoxy matrices. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47132.