Melt Crystallization Behavior and Spherulitic Morphology of Poly(Trimethylene Terephthalate)/Poly(Propylene Glycol) Copolymers with Different Poly(Propylene Glycol) Molecular Weights
作者： Peng Li , Chenguang Yao , Guisheng Yang
DOI: 10.1080/03602559.2017.1354219
关键词: Optical microscope 、 Differential scanning calorimetry 、 Molecular mass 、 Isothermal process 、 Materials science 、 Morphology (linguistics) 、 Polyvinyl alcohol 、 Polymer chemistry 、 Copolymer 、 Crystallization
摘要: ABSTRACTPoly(trimethylene terephthalate)/poly(propylene glycol) (PTT/PPG) copolymers with different PPG molecular weights (400–4,000 g /mol) were successfully synthesized and characterized. Double melting endotherms during isothermal melt crystallization observed by differential scanning calorimetry. Middle-temperature in all stronger than that PTT homopolymer became smaller the increasing weight. Nonisothermal kinetics of samples analyzed Ozawa Mo models. Polarized optical microscopy micrographs revealed ring-banded spherulitic morphology was relatively easier to be higher weight at lower temperature, nearly had no influence on band spacing.
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