【作者】 旷云香； 张文熊； 刘晶冰；

【Author】 Kuang Yunxiang, Zhang Wenxiong, Liu Jingbing (College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China)

【机构】 北京工业大学材料科学与工程学院；

【摘要】 在差式量热扫描仪(DSC)的样品盒中以部分中和的丙烯酸为单体分别在有氮气保护和没有氮气保护(即空气条件)下合成了高吸水性树脂,并用DSC对反应过程进行了研究,发现当不用氮气进行保护时,其反应过程的DSC曲线将出现一抑制阶段,这是由于氧气参与反应生成了副产物,同时研究了温度对反应过程的影响,得出在空气中反应的最佳温度为90℃,并用红外光谱和扫描电镜对产物进行了表征。更多还原

【Abstract】 Superabsorbent based on partly neutralized acrylic acid was prepared under atmosphere and nitrogen respectively in the pan of Differential Scanning Calorimete(rDSC)which was a macro-scale reactor. DSC was used to study the heat effects during the synthesis of polymer. There was an inhibition period (IP) on the DSC curve under atmosphere because oxygen took part in the reaction. The result shows that the optimum temperature of reaction under air is 90℃. The reaction outcomes were studied by IR spectrum and SEM.更多还原