【摘 要】
：
Microwave irradiation has been a special alternative for heating systems and several chemical reactions.In polymerization processes, microwaves can enhance
【机 构】
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Research Institute of Concrete and Eco-materials, School of Chemical and Environmental Engineering,U
【出 处】
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The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
Microwave irradiation has been a special alternative for heating systems and several chemical reactions.In polymerization processes, microwaves can enhance reaction rates or improve specific characteristics of the formed polymer.In this work, The kinetics advantages of free radical polymerization of polycarboxylic superplasticizer(PCE) using αt-methallyl-ω-methoxy poly(ethylene glycol) ether(TPEG) and acrylic acid(AA) hydrogen peroxide(H2O2) and vitamin C(Vc)(as water soluble initiator), 3-thioglycolic acid(TGA) (as chain transfer agent) has been investigated by microwave irradiation at constant temperature 50℃.Different effects were observed in polymerization of the concentration of TPEG, AA, H2O2, Vc and microwave power.To study the effect of microwave irradiation at constant temperature 50℃ upon the free radical polymerization.The rate of polymerization increases with an increase in concentrations of TPEG, AA, H2O2, Vc and microwave power.Based on the observed results microwave advantages has been proposed to account for the experimental observations followed by a discussion on its significance.
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