Novel copolyimides containing 1, 4:3, 6-dianhydro-d-mannitol unit Preparation, characterization, thermal, mechanical, soluble, and optical properties. (March 2019)

• Record Type: Journal Article
• Authors: Mi, Zhiming; Liu, Zhixiao; Wang, Chunbo; Wang, Tao; Zhang, Zhao; Wang, Daming; Zhao, Xiaogang; Zhou, Hongwei; Zhang, Yumin; Chen, Chunhai
• Is Part Of: High performance polymers. Volume 31:Number 2(2019)
• Page Start: 220
• Page End: 229
• Publication Date: 2019-03
• Subjects: Dianhydride -- 1, 4:3, 6-dianhydro-d-mannitol -- copolyimide; Polymerization -- Periodicals; Polymers -- Periodicals; 547.7
• DOI: 10.1177/0954008318758491
• Languages: English
• ISSNs: 0954-0083

Abstract

In order to obtain colorless and soluble polyimide films, a dianhydride containing 1, 4:3, 6-dianhydro-d -mannitol unit, 2, 5-bis(3, 4-dicarboxyphenoxy)-1, 4:3, 6-dianhydromannitol dianhydride (IMDA) was synthesized. And a series of copolyimides were prepared from IMDA, 1, 2, 4, 5-benzenetetracarboxylic anhydride (PMDA), and 4, 4′-oxydianiline by adjusting the mole fraction (between IMDA and PMDA) of IMDA from 0% to 100%. It was found that the solubility as well as the transmittance of the copolyimide films enhanced with the increased content of IMDA. Especially, when the content of IMDA was 60% or more, the copolyimides were readily soluble in common polar solvents and could afford flexible, tough, and colorless films with transparency up to 84% at 450 nm, which may be ascribed to the incorporation of the relatively twisted and flexible 1, 4:3, 6-dianhydro-d -mannitol units into the backbone of copolyimides. Additionally, the influence of IMDA on the thermal, mechanical, and morphological properties of copolyimides was investigated.