文献类型：期刊文献

英文题名：Effect of alcohols-regulated crystallization on foaming process and cell morphology of polypropylene

作者：Gao, Xiulu[1];Qiang, Wei[1];Zhao, Ling[1,2];Xu, Zhimei[1];Liu, Tao[1];Tian, Mengwei[1];Liu, Zhen[3];Hu, Dongdong[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Xinjiang Univ, Coll Chem & Chem Engn, Urumqi 830046, Peoples R China;[3]Frostburg State Univ, Dept Phys & Engn, Frostburg, MD 21532 USA

年份：2021

卷号：175

外文期刊名：JOURNAL OF SUPERCRITICAL FLUIDS

收录：;EI(收录号：20212110405318);WOS:【SCI-EXPANDED(收录号:WOS:000663594600002)】；

基金：National Key Research and Development Program of China (2016YFB0302200) , National Natural Science Foundation of China (21706063) , Natural Science Foundation of Shanghai (20ZR1413700) , the Fundamental Research Funds for the Central Universities , and the 111 Project (B20031) .

语种：英文

外文关键词：Polypropylene; Supercritical CO2 foam; Co-blowing agent; Alcohols; Crystallization

摘要：A novel approach was established to promote favorable PP foams at low temperatures by regulating the melt crystallization behavior. The crystallization behavior of PP on supercritical CO2 foaming was systematically studied in the presence of alcohol as co-blowing agent. The results of dissipative particle dynamics (DPD) simulations revealed that the diffusion coefficient of blowing agents in PP was enhanced with the increase of alcohol molecular weight. Alcohols had a significant effect on the melt and crystallization behavior of PP. The crystallization temperature was decreased from 88 degrees C to 82 degrees C, and crystallinity declined from 17% to 9% by adding 1-decanol in 8 MPa CO2. The addition of co-blowing agents decelerated desorption rate of blowing agents. The lower limit of foaming temperature moved further down with the carbon chain growth of alcohol, e.g., the lower temperature decreased from 145 degrees C to 130 degrees C by adding 1-decanol.