Open AccessResearch on synthesis and properties of early strength polycarboxylate superplasticizers with different lengths of side chain
Author(s) -
Guangxing Lai,
Yunhui Fang,
Youzhe Shao,
Zhanghua Chen,
Yuanqiang Guo
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/358/5/052018
Subject(s) - superplasticizer , side chain , materials science , ether , chain (unit) , gel permeation chromatography , polymer chemistry , chemical engineering , composite material , chemistry , compressive strength , polymer , organic chemistry , physics , astronomy , engineering
A series of early-strength polycarboxylate superplasticizers with different lengths of side chain were synthesized by methyl allyl polyoxyethylene ether (HPEG) as macromonomers with different molecular weights. The structural parameters of polycarboxylate superplasticizers were calculated by gel permeation chromatography method. The performance of the synthesized samples were characterized by hydration heat, X-ray powder diffraction and concrete test. The results show that the longer the side chain be, the better the early strength effect be, when the side chain length is greater than 67.64, the early strength of the synthesized polycarboxylate superplasticizers are better than that of a foreign multinational enterprise.