Effect of TiO_2 content on PET chip crystallization
2003
TiO2 particulate as delustrant is existed in the amorphous region of PET and it has significance influence on PET crystallization .During the PET chip cooling crystallization ,adsorption and steric hindrance of TiO2 particulate has hindrance effect on the crystallization.During the PET melt crystallization ,as crystalnucleus, TiO2 particulate has promotion effect on crystallization.The DSC parameters show that the glass transition temperature tg,cooling crystallization peak temperature tc and melt crystallization peak temperature tmc will decreased with the decreasing of TiO2 content.
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