对PET/PEN共混体系中共混条件对体系特性粘度的影响作了研究,结果表明,扩链剂的添加,混合温度和时间对[η]有明显影响,1H-NMR对共混物无规度的表征表明,体系首先形成嵌段共聚物,随酯交换的进行逐渐向无规共聚物过渡.
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