Preparation and Properties of New Polycarboxylate-Type Superplasticizer

Abstract:

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A modified polycarboxylate superplasticizer was synthesized by copolymerization of polyethylene glycol monomethyl ether methacrylate (MPEG-MA), β–Cyclodextrins grafted maleic anhydride (MAH-β-CD), methacrylic acid (MAA) and methallyl sulfonic acid (MAS). The excellent superplasticizer was obtained at the molar ratio of n(MAH-β-CD) : n(MAS) : n(MAA) : n(MPEG-MA) was 0.05:0.1:3:1 using ammonium persulfate (APS) as initiator at 90°C for 5 h. The applied results show that the product had many advantages, such as lower dosage, longer setting time, better flow-keeping ability and better compatibility with different cement. Meanwhile, the structure and relative molecular weight were characterized by FTIR and GPC respectively.

Info:

Periodical:

Advanced Materials Research (Volumes 194-196)

Edited by:

Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang

Pages:

1122-1125

DOI:

10.4028/www.scientific.net/AMR.194-196.1122

Citation:

S. H. Lv et al., "Preparation and Properties of New Polycarboxylate-Type Superplasticizer", Advanced Materials Research, Vols. 194-196, pp. 1122-1125, 2011

Online since:

February 2011

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Price:

$35.00

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