期刊
EUROPEAN POLYMER JOURNAL
卷 42, 期 2, 页码 328-335出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2005.07.008
关键词
naphthalene units; bis(ester-amine)s; poly(ester-imide)s
Two series of new aromatic polyester-imide)s were prepared from 1,5-bis(4-aminobenzoyloxy)naphthalene (p-1) and 1,5-bis(3-aminobenzoyloxy)naphthalene (m-1), respectively, with six commercially available aromatic tetracarboxylic dianhydrides via a conventional two-stage synthesis that included ring-opening polyaddition to give poly(amic acid)s followed by chemical imidization to polyimides. The intermediate poly(amic acid)s obtained in the first stage had inherent viscosities of 0.41-0.84 and 0.66-1.37 dl/g, respectively. All the para-series and most of the meta-series poly(esterimide)s were semicrystalline and showed less solubility. Two of the meta-series polyester-imide)s derived from less rigid dianhydrides were amorphous and readily soluble in polar aprotic solvents, and they could be solution-cast into transparent and tough films with good mechanical properties. The meta-series polymers derived from rigid dianhydrides were generally semicrystalline and showed less solubility. Except for one example, the meta-series poly(ester-imide)s displayed discernible T(g)s in the range 239-273 degrees C by DSC. All of these two series poly(ester-imide)s did not show significant decomposition below 450 C in nitrogen or in air. (c) 2005 Elsevier Ltd. All rights reserved.
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