In this work the PET-PA 66 copolymers are obtained. The characterization of chemical structure of copolymer chain by NMR method is also given. It is shown that when the 66 Nylon salt is added in the copolycondensation, the adipic acid and hexamethylenediamine reacted mainly by itself and the obtained copolymer is a random copolymer, and when the Nylon 66 oligomer is added, the obtained copolymer is a block copolymer. The result of NMR analysis is demonstrated by properties investigation.
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机译:如何发展银行品牌形象-以专注于财富管理业务的远东国际商业银行为例 =The Study of the Development of Bank’s Brand Image- A Case Study of Far Eastern Int’l Bank Targeting on Wealth Management