Physical and mechanical properties of Al(OH)3/polypropylene composites modified by in situ-functionalized polypropylene

✍ Scribed by Kancheng Mai; Zhengjun Li; Yuxin Qiu; Hanmin Zeng

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 318 KB
• Volume: 83
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.10269

✦ Synopsis

Abstract

Al(OH)~3~/polypropylene (PP) composites modified by in situ‐functionalized polypropylene (FPP) were prepared by a one‐step melt‐extrusion process. The effect of in situ FPP on the crystallization and melting behavior, melt‐flow index, limiting oxygen index, thermal degradation, mechanical properties, and fracture morphology of Al(OH)~3~/PP composites was studied. Formation of in situ FPP resulted in a decreased crystallization temperature and melting point of PP in the composites, an increased melt‐flow index, and improved tensile and flexural strengths of Al(OH)~3~/PP composites, whereas the thermal degradation behavior and limiting oxygen index was not been influenced. The impact strength of the Al(OH)~3~/PP composites modified by in situ FPP depended upon the content of the initiator, dicumyl peroxide, and the monomer, acrylic acid. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 2850–2857, 2002; DOI 10.1002/app.10269