CRYSTALLIZATION, MECHANICAL AND THERMAL PROPERTIES OF SORBITOL DERIVATIVES NUCLEATED POLYPROPYLENE/CALCIUM CARBONATE COMPOSITES

• Published in: Chinese journal of polymer science Vol. 28; no. 4; pp. 457 - 466
• Main Authors: Han, Liang, Wang, Yong, Liu, Li, Xiang, Fang-ming, Huang, Ting, Zhou, Zuo-wan
• Format: Journal Article
• Language: English
• Published: Heidelberg Chinese Chemical Society and Institute of Chemistry, CAS 01.07.2010
• Subjects: Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Industrial Chemistry/Chemical Engineering; Polymer Sciences; 复合材料; 成核剂; 改性聚丙烯; 热变形温度; 物理性能; 碳酸钙; 结晶山梨醇; 衍生物; Sorbitol derivatives; Polypropylene; Physical properties; Crystallization; Calcium carbonate
• ISSN: 0256-7679; 1439-6203
• DOI: 10.1007/s10118-010-9051-8

The effect of a phase nucleating agent （NA） 1,3：2,4-bis（3,4-dimethylbenzylidene） sorbitol （DMDBS） on crystallization and physical properties of polypropylene/calcium carbonate （PP/CaCO3） composites has been comparatively investigated. Compared with binary PP/CaCO3 composites, in which CaCO3 exhibits weak heterogeneous nucleation, inconspicuous reinforcement and toughening effects for PP, the introduction of a few amounts of DMDBS induces a great increase of the degree of crystallinity. Largely improved tensile properties, fracture toughness at relatively higher temperature and heat deformation temperature （HDT） are observed for DMDBS nucleated PP/CaCO3 composites.