Effect of Polymer on Morphology and Structure of Calcium Silicate Hydrate Prepared via Precipitation Method
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2014年第3期
论文作者：吕林女 PING Bing 何永佳 HE Liu WU Xi HU Shuguang
文章页码：504 - 506
摘 要：The effects of polyacrylamide（PAM） and polyvinyl alcohol（PVA） on morphology and structure of calcium silicate hydrate with C/S 1.0-1.7 prepared via precipitation in solution were investigated by XRD, FT-IR and TEM techniques. The results show that incorporation of the polymers decreased the order degree, increased the interlayer spacing and disturbed the layered stacking of C-S-H. Interlayer spacing expansion depended on C/S ratios and type of polymer. Interlayer spacing expansion had a minimum at C/S 1.0 and a maximum at C/S 1.3 and 1.5. Interlayer spacing expansion of PAM was bigger than that of PVA with the same C/S. C-S-H added with PVA mainly exhibited foil-like and fi brillar morphology. The fi brils were of variable length from a few tens of nanometers to a few hundreds of nanometers. Fibrils or foils seemed to be longer in the presence of PVA.
吕林女1,2，PING Bing1,2，何永佳2,3，HE Liu4，WU Xi2,3，HU Shuguang2,3
1. School of Science, Wuhan University of Technology2. State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology3. School of Materials Science and Engineering, Wuhan University of Technology4. The 5th Engineering Ltd. of The 11th Engineering Bureau of China Railway
摘 要：The effects of polyacrylamide（PAM） and polyvinyl alcohol（PVA） on morphology and structure of calcium silicate hydrate with C/S 1.0-1.7 prepared via precipitation in solution were investigated by XRD, FT-IR and TEM techniques. The results show that incorporation of the polymers decreased the order degree, increased the interlayer spacing and disturbed the layered stacking of C-S-H. Interlayer spacing expansion depended on C/S ratios and type of polymer. Interlayer spacing expansion had a minimum at C/S 1.0 and a maximum at C/S 1.3 and 1.5. Interlayer spacing expansion of PAM was bigger than that of PVA with the same C/S. C-S-H added with PVA mainly exhibited foil-like and fi brillar morphology. The fi brils were of variable length from a few tens of nanometers to a few hundreds of nanometers. Fibrils or foils seemed to be longer in the presence of PVA.
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