文献类型：期刊文献

英文题名：Morphologies of Polymer Grains During Spray Drying

作者：Chen, Xin[1];Zheng, Baicun[1];Shen, Jun[2]

机构：[1]E China Univ Sci & Technol, Res & Dev Ctr Sports Mat, Shanghai 200237, Peoples R China;[2]Sunrise Enterprise, Shanghai, Peoples R China

年份：2013

卷号：31

期号：4

起止页码：433

外文期刊名：DRYING TECHNOLOGY

收录：;EI(收录号：20131016090931);WOS:【SCI-EXPANDED(收录号:WOS:000315460900009)】；

基金：This work is supported by ECUST-Taishan Sports Materials R&D center, P.R. China. The authors also thank the faculty for the measurements of the micro-structures and the size distributions of grains.

语种：英文

外文关键词：Grain; Morphology; Nano-silica; Spray drying

摘要：Morphologies of polymer grains produced from vinyl acetate-ethylene (VAE) polymer latex (including 10wt% PVA) by spray drying have been studied. The effects of inlet drying air temperature, solid content, and admixture (hydrophobic nano-silica) on the morphologies were investigated. It was demonstrated that spherical grains tend to be obtained from VAE latex with low solid content. VAE latex with high solid content leads to surface-identated grains under high temperature (>175 degrees C) but spherical grains under low or intermediate temperature (<155 degrees C). Meanwhile, the spherical grains coated with hydrophobic nano-silica are able to be obtained by addition of the silica into VAE latex.