Colorless polyimides with excellent thermal and mechanical properties were developed from 2 R ,5 R ,7 S ,10 S -naphthanetetracarboxylic dianhydride, and their properties were systematically compared with those based on 1 S ,2 R ,4 S ,5 R -cyclohexanetetracarboxylic dianhydride.
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Hu et al. (2017) studied this question.
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