Title: Synthesis and characterization of water-soluble polyacrylic acid series superplasticizer
Abstract:Abstract:Polyacrylic acid series superplasticizer with different monomer combination and proportioning,different molecular weight and structure is synthesized by free radical copolymerization taking m...Abstract:Polyacrylic acid series superplasticizer with different monomer combination and proportioning,different molecular weight and structure is synthesized by free radical copolymerization taking monomers of acrylic acid,methyl acrylate,methacrylic acid,maleic anhydride and sodium alkyl sulfonate as raw material.The composition of copolymer is characterized by infrared spectrometry,and the intrinsic viscosity of copolymer,surface tension of aqueous solution of water reducing agent as well as ζ electric potential and fluidity of cement paste adding water reducing agent are also determined respectively by methods of viscosimetry and electrophoresis etc.The results show that series polyacrylic acid polymer have certain surface activity so as to increase absolute value of ζ electrical potential of cement paste;many factors have influence on performance of water reducing agent such as chain structure,molecular weight,amount of carboxyl anion and its distribution as well as radical steric hindrance etc.Read More
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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