The changes of intrinsic viscosity and end carboxyl group content with temperature and time were studied for poly(trimethylene terephthalate)(PTT), PET and CDP.
研究了聚对苯甲酸酯(PTT),PET,CDP在不同温度和时间下的特粘和端羧基含量的变化。
The changes of intrinsic viscosity and end carboxyl group content with temperature and time were studied for poly(trimethylene terephthalate)(PTT), PET and CDP.
研究了聚对苯甲酸酯(PTT),PET,CDP在不同温度和时间下的特粘和端羧基含量的变化。
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