Effect of Polymer on Morphology and Structure of Calcium Silicate Hydrate Prepared via Precipitation Method

被引：10

作者：

Lu Linnu ^{[1
,2
]}

Ping Bing ^{[1
,2
]}

He Yongjia ^{[2
,3
]}

He Liu ^{[4
]}

Wu Xi ^{[2
,3
]}

Hu Shuguang ^{[2
,3
]}

机构：

[1] Wuhan Univ Technol, Sch Sci, Wuhan 430070, Peoples R China

[2] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China

[3] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

[4] 11 Engn Bur China Railway, Engn Ltd 5, Chongqing 400037, Peoples R China

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2014年 / 29卷 / 03期

基金：

中国国家自然科学基金;

关键词：

C-S-H; morphology; structure; polyacrylamide; polyvinyl alcohol; C-S-H; MICROSTRUCTURE;

D O I：

10.1007/s11595-014-0948-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

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. lnterlayer 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.

引用

页码：504 / 506

页数：3

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