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- Title
Effect of β-nucleating agent on crystallization of wollastonite-filled recycled polypropylene composites.
- Authors
Ding, Qian; Fu, Hao; Hua, Chaoran; Jiang, Xinman; Yu, Jia; Zhu, Keming
- Abstract
The crystallization behavior, melting characteristics, and semicrystalline morphologies of wollastonite-filled recycled polypropylene (R-PP) composites without and with β-nucleating agent were investigated in this study. The crystallization temperature (Tc) of 20 mass% wollastonite-filled R-PP composite is 0.4 °C higher than that of R-PP, suggesting that the adding of wollastonite has little nucleation effect on crystallization of R-PP. However, 0.3 mass% TMB-5 significantly increases the Tc of R-PP and induces a large number of β-crystals in wollastonite-filled R-PP composites. For calcium pimelate-supported wollastonite (β-W) filled R-PP composites, the Tc and the relative β-phase content of R-PP increase with increasing addition amount of β-W (from 1 to 20 mass%). As a result, wollastonite-filled R-PP composites with β-phase content higher than 85% can be obtained by adding 0.3 mass% TMB-5 or 20 mass% β-W, which provides an effective method for realizing high value-added and low-cost recycling of R-PP.
- Subjects
NUCLEATING agents; POLYPROPYLENE; CRYSTALLIZATION; WOLLASTONITE; NUCLEATION; CALCIUM
- Publication
Journal of Thermal Analysis & Calorimetry, 2021, Vol 144, Issue 3, p713
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-020-09769-7