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以凹凸棒石(AT)为无机填料,丙烯酰胺(AM)、丙烯酸(AA)两种单体同时对魔芋(KGM)进行接枝改性,采用水溶液聚合法制备了标题化合物。考察了各合成因素对树脂吸液倍率的影响,并采用FT-IR,SEM对树脂进行了表征。结果表明,当魔芋用量为15%(占单体丙烯酸质量百分比,下同)、凹凸棒石用量为30%、交联剂用量为0.08%、引发剂用量为0.4%和丙烯酰胺与丙烯酸的质量比为5∶1时,制备的树脂的吸蒸馏水倍率最高,达到978.47 g/g。红外光谱(FTIR)测试分析表明魔芋葡甘聚糖、丙烯酸、丙烯酰胺和凹凸棒石共同参与了接枝聚合反应。扫描电子显微镜(SEM)测试分析表明凹凸棒石的引入,树脂的表面变得粗糙并存在大小不一的孔隙。
Using Attapulgite (AT) as inorganic filler, acrylamide (AM) and acrylic acid (AA) were used to graft konjac (KGM) simultaneously. The title compounds were prepared by aqueous solution polymerization. The effect of each synthetic factor on the resin absorption rate was investigated. The resin was characterized by FT-IR and SEM. The results showed that when the amount of konjac was 15% (accounting for the mass percentage of acrylic monomer, the same below), the amount of attapulgite was 30%, the amount of crosslinking agent was 0.08%, the initiator was 0.4% and the mass of acrylamide and acrylic acid When the ratio is 5: 1, the prepared resin has the highest ratio of distilled water to 978.47 g / g. FTIR analysis showed that konjac glucomannan, acrylic acid, acrylamide and attapulgite participated in the graft polymerization. Scanning electron microscopy (SEM) test analysis showed that the introduction of attapulgite, the resin surface becomes rough and there are different sizes of pores.