Effect of Neutralizer on Transparency of Nucleating Agent-Containing Polypropylene

Polymers

Yohei Uchiyama¹  Masayuki Yamaguchi²  Shohei Iwasaki²  Miwa Tenma² 

[1] Research & Development Department, Research & Development Division, New Japan Chemical Co., Ltd. 13 Yoshijima, Yaguracho, Fushimi, Kyoto 612-8224, Japan;School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan;

关键词: polypropylene;    nucleating agent;    neutralizer;    transparency;    dynamic mechanical properties;   

DOI  :  10.3390/polym13050680

来源: DOAJ

【 摘 要 】

The effects of neutralizer species on the transparency of injection-molded plates were studied using isotactic polypropylene (PP) containing a crystal nucleating agent—i.e., 1,3:2,4-bis-o-(4-methylbenzylidene)-d-sorbitol (MDBS). A plate containing lithium stearate (StLi) was more transparent than one containing calcium stearate (StCa) when the MDBS content was 0.1 wt. %. The addition of StLi accelerated the formation of MDBS fibers and the crystallization of PP. However, when the MDBS content was 1.0 wt. %, StCa improved the transparency more effectively than StLi. These results indicate that the combination of an appropriate amount of MDBS and the correct neutralizer species is critical for enhancing the transparency of injection-molded PP plates.

【 授权许可】

Unknown