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在异辛酸亚锡的催化下,ε-己内酯与官能团化ε-己内酯单体4-氨基甲酸苄基酯-ε-己内酯(CABCL)开环共聚合成几组含有侧氨基甲酸苄基酯基的ε-己内酯/4-氨基甲酸苄基酯-ε-己内酯共聚物poly(CL-co-CABCL),并且共聚物与异氟尔酮二异氰酸酯(IPDI)和1,4-丁二醇(1,4-BDO)反应合成了一系列官能团化的聚氨酯。分别通过核磁共振(1 H-NMR)和凝胶渗透色谱(GPC)对聚合物的结构进行了表征,研究了它们的分子量及其分布。使用X-衍射仪(XRD)、接触角测定仪和万能材料试验机来测定聚氨酯材料的结晶性以及力学性能。实验结果表明:氨基甲酸苄基酯侧基基团的引入有效地调节了聚氨酯的结晶性,改善了聚氨酯的韧性。
Under the catalysis of stannous octoate, ε-caprolactone and the functionalized ε-caprolactone monomer benzyl 4-carbamate-ε-caprolactone (CABCL) ring-opening copolymerization of several groups containing side carbamate Ε-caprolactone / benzyl 4-benzylcarbamate-ε-caprolactone copolymer poly (CL-co-CABCL) and the copolymer was reacted with isophorone diisocyanate (IPDI) and 1 , 4-butanediol (1,4-BDO) reaction of a series of functional groups of the polyurethane. The structures of the polymers were characterized by1H-NMR and GPC, respectively, and their molecular weights and their distributions were investigated. The crystallinity and mechanical properties of the polyurethane materials were determined using a X-ray diffractometer (XRD), a contact angle meter and a universal material testing machine. The experimental results show that the introduction of benzyl carbamate side groups effectively adjust the crystallinity of polyurethane and improve the toughness of polyurethane.