HPAM/有机铬(Ⅲ)凝胶交联密度的研究
China Petroleum and Chemical Standard and Quality（2012）
Abstract
有机铬(Ⅲ)的加入能使HPAM发生分子间的交联,HPAM分子在水中分散得更均匀；通过紫外-可见分光光度计在波长410nm处测定HPAM/有机铬凝胶体系渗透液的有机铬吸光度值,用插值法在标准有机铬溶液A-c直线上找出渗透液中铬离子的浓度ρd,计算参与凝胶体系交联的交联密度ρ,并考察了不同温度下交联密度的变化情况,在一定温度范围内( 30～80℃),温度越高,交联密度越大(6.0810-5～18.7 × 10-5),见表3.聚合物分子量越大,交联密度越大,见表4.
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