分子結構設計對高分子物性研究

Study on the Physical Properties of Polymer by Molecular Design

周上智(S. C. Chou) ； 劉開峻(K. C. Liu)

《紡織綜合研究期刊》 32卷1期 (2022/01) Pp. 1-6

https://doi.org/10.6439/TTRJ.202201_32(1).0001

摘要

高分子是由不同化學結構的重複單元／單體組成，藉由加成或縮合聚合反應而成，決定高分子物性的關鍵在於單體的化學結構。聚醯亞胺屬於縮合聚合反應，其分子結構的選擇性大，但大多數聚醯亞胺為熱固性，成型後無法再被加工，因而限制了應用範圍。為了增加聚醯亞胺的加工性，本研究以分子設計方法，設計不同單體分子組合，並透過聚合條件控制，探討不同分子結構及分子量對聚醯亞胺物性的影響，透過這一系列聚合反應探討，可得到具熱加工性或溶劑可溶解性的聚醯亞胺，最終期可應用在各式加工及高性能產品應用領域。

關鍵字

聚醯亞胺 ； 加工性 ； 分子設計

並列摘要

Polymers are made up of repeating units/monomers with different chemical structures through addition or condensation polymerization reactions. The key to dominate the physical properties of polymers is the chemical structure of the selected monomers. Polyimide is a polycondensation polymer with highly selectivity of different chemical structure diamines and dianhydrides. However, most polyimides are thermoset and cannot be processed well, which limits their scope of application. In order to increase the processability of polyimide, we uses molecular design methods to combinate different monomers, and also variated the polycondensation conditions, in this study. To find out the influence of different molecular structure and molecular weight on the physical and thermal properties. Through this series design of polymerization, polyimide with thermal processability or solvent solubility can be obtained, and it can be widely used in various high-performance applications.

並列關鍵字

Polyimide ； processability ； molecular design