Effects of nucleating agent 1,3,5-benzenetricarboxylic acid tris(cyclohexylamide) on properties and crystallization behaviors of isotactic polypropylene |
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Authors: | Yue-fei Zhang Hui Chen |
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Institution: | 1. Hunan Province Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Biological Engineering, Changsha University of Science and Technology, No. 960, South Wanjiali Road, Changsha, 410114, China
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Abstract: | Amide derivatives of 1,3,5-benzenetricarboxylic acid are a type of novel nucleating agents for isotactic polypropylene (iPP). Effects of nucleating agent 1,3,5-benzenetricarboxylic acid tris(cyclohexylamide) (BTCA-TCHA) on properties and crystallization behaviors of iPP were investigated and the results were compared with those of iPP nucleated with a highly effective commercial nucleating agent Millad 3988. The results showed that BTCA-TCHA was highly effective and it improved greatly the mechanical and optical properties of iPP and increased crystallization peak temperature of iPP obviously. When the addition concentration of BTCA-TCHA was 0.2 wt.%, tensile strength and flexural modulus of iPP were increased by 9.7 and 12.4 %, respectively, and the haze value of iPP was decreased by 53.5 %. When the cooling rate was 20 °C/min, the crystallization peak temperature of iPP was increased from 114.6 °C of virgin iPP to 126.8 °C. In addition, it was found that the nucleation efficiency of BTCA-TCHA was comparable for that of Millad 3988. |
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