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Combined effect of shear and nucleating agent on the multilayered structure of injection-molded bar of isotactic polypropylene

✍ Scribed by Jing Cao; Ke Wang; Wen Cao; Qin Zhang; RongNi Du; Qiang Fu

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
571 KB
Volume
112
Category
Article
ISSN
0021-8995

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## Abstract In this work, the effect of a nucleating agent on the crystallization structure of an injection‐molded bar of a polypropylene random copolymer (PPR) with sorbitol derivatives [1,2,3,4‐dibenzylidene sorbitol (DBS)] has been studied. The results show that pure PPR forms a simple skin–core

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The isothermal and nonisothermal crystallization kinetics of nonnucleated and nucleated isotactic polypropylene ( iPP ) were investigated by DSC and a polarized light microscope with a hot stage. Dibenzylidene sorbitol ( DBS ) was used as a nucleating agent. It was found that the crystallization rat