Preparation and Properties of Poly(ester imide)s Derived from Bis(trimellitic acid anhydride)Phenyl Ester
With the rapid development of flexible photoelectric technology,the preparation of polyimides with excellent comprehensive properties has become a research hotspot.A series of poly(ester imide)s were prepared by polycondensation of bis(trimellitic acid anhydride)phenyl ester(TAHQ)and three 4,4′-diaminodiphenylmethaners with different substituent groups,and their thermal properties,solubility,mechanical properties and optical properties were studied.The results showed that the polyimide films prepared by TAHQ and 2,2′-bis(trifluoromethyl)l-4,4′-diaminodiphenylmethaner had high glass transition temperature and good visible transmittance,which were expected to be applied in the field of flexible optoelectronics.
poly(ester imide)sbis(trimellitic acid anhydride)phenyl estersubstituent group
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