6506
博碩士論文
polyimides , copolyimides
Homopolyimides derived from a novel heterocyclic diamine, 2,6-diaminobenzo- [1,2-d:4,5-d]bisthiazole (DABBT), and either pyromellitic dianhydride (PMDA, A-series) or 4,4¡¦-sulfonyldiphthalic dianhydride (SDPA, B-series), as well as copolyimides containing different molar ratios of DABBT and 4,4¡¦-diaminodiphenyl ether (ODA), have been synthesized via soluble polyamic acids (PAA) followed by the thermal imidization. Polymer properties such as viscosity, thermal...