Influence of the cooling rate on the non-isothermal crystallization of isotactic polypropylene modified with sorbitol derivative and silsesquioxane

摘要

The influence of 1,3:2,4-bis(3,4-dimethylbenzylidene) sorbitol (DMDBS) and tetra-silanolphenyl silsesquioxane (phPOSS) on the modification of isotactic polypropylene (iPP) was investigated. In particular, dependency of crystallization behavior on the cooling rate was deter-mined. To understand these effects the results of differential scanning calorimetry (DSC) measure-ments and the crystallization curves were analyzed.