Model of Coherent Interface Formation in Cement-Based Composites Containing Polyblend of Poly vinyl Alcohol and Methylcellulose

来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2002年第2期

论文作者：赵文俞

文章页码：58 - 61

摘    要：The texture of interfacial zone between cement paste and quartz in the cement-based composites containing polyvinyl alcohol （PVA）, methylcellulose （MC） and their potyblend in an amount of 10 wt % with respect to cement, as well as the texture of dehydrated bodies of PVA, MC, and the potyblend solutions, were investigated with SEM. The network texture of the dehydrated polyblend is confirmed by comparing the texture of dehydrated bodies of PVA and MC. The network texture has restrained the movement of polyblend molecules in the cement mortar but is helpful to forming a coherent interface between cement paste and quartz. The key factor of forming the coherent interface is not the neutralization reaction between H + from hydrolysis of quarts: and OH- from hydration of cement, but the electrostatic attraction and the chemical reaction between polar groups on the polyblend molecule and cations and onions from hydrolysis of quartz and hydration of cement, respectively. The model of the coherent interface formation