Effeet of Polymer on Morphology and Strueture of Caleium Silieate Hydrate Prepared via Precipitation Method

The effects of polyaerylamide （PAM） and polyvinyl alcohol （PVA） on morphology and structure of calcium silica~ 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 d...

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Bibliographic Details
Published in:武汉理工大学学报：材料科学英文版 2014 (3), p.504-506
Main Author: Lu Linnu PING Bing HE Yongjia HE Liu WU Xi HU Shuguang
Format: Article
Language:English
Subjects:
FT-IR
PVA
制备
层间距
形态
水合物
沉淀法
聚合物
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Summary:The effects of polyaerylamide （PAM） and polyvinyl alcohol （PVA） on morphology and structure of calcium silica~ 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 fibrillar morphology. The fibrils 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.
ISSN:1000-2413
1993-0437