实现聚甲基丙烯酸缩水甘油酯互通多孔材料的结构调控,包括增加多孔材料的比表面积和调节孔径的大小,一直是聚合物材料研究的热点之一。采用高内相乳液模板法合成聚甲基丙烯酸缩水甘油酯互通多孔材料,通过扫描电子显微镜、氮气吸附脱附仪和压汞仪等对材料的结构进行了表征,研究了氯化钙(CaCl2)、氯化钠(NaCl)和硫酸镁(MgSO4) 3种无机盐的类型及用量对聚甲基丙烯酸缩水甘油酯互通多孔材料比表面积、泡孔、窗孔及毛孔孔径的影响。结果表明:与采用二价无机盐CaCl2和MgSO4比较而言,采用一价无机盐NaCl制备的聚甲基丙烯酸缩水甘油酯互通多孔材料具有较大的比表面积、较小泡孔、窗孔和毛孔孔径;随着无机盐用量的增加,聚甲基丙烯酸缩水甘油酯互通多孔材料的比表面积逐渐增大,而泡孔、窗孔和毛孔孔径逐渐减小。
Control over the microstructure of porous poly(glycidyl methacrylate) (poly GMA) materials,including their specific surface area,pore type and size,has long been one of central research topics in polymer science.A series of porous poly GMA materials were prepared by high internal phase emulsion polymerization with different inorganic salts,including CaCl2,NaCl and MgSO4.The effect of these inorganic salts and their feeding amount on their microstructures were investigated in detail by scanning electron microscopy (SEM),nitrogen adsorption/desorption instruments and mercury intrusion porosimetry.It was found that: poly GMAs prepared with the univalent salt,NaCl,had a larger surface area and a smaller void,interconnect and pore size,as compared with those prepared with CaCl2 or MgSO4 bivalent salt.With the increase of inorganic salt feeding amount,the specific surface area of poly GMA gradually increased,while it’s void,interconnect and pore size gradually decreased.
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基金资助
国家自然科学基金项目(51003122);郑州烟草研究院院长基金项目(332016CA0210);河南省科技开放合作计划(172106000067);河南省高校青年骨干教师资助计划(2013GGJS-297)
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