论文部分内容阅读
考察了各因素对木质素磺酸钙与丙烯酰胺接枝共聚反应的影响,并对产物的结构进行了红外光谱分析;此外,还对产品性能,如热稳定性、抗盐、抗钙能力进行了测试。接枝共聚反应的优化工艺条件为:m(木质素磺酸钙)∶m(丙烯酰胺)=1∶5,引发剂浓度为4.2×10-3mol.L-1,反应温度50℃,反应时间2h。接枝共聚物的红外谱图表明,木质素磺酸钙与丙烯酰胺之间发生了接枝共聚反应。接枝共聚物有一定的热稳定性,抗盐、抗钙能力较好。
The effects of various factors on graft copolymerization of calcium lignosulfonate and acrylamide were investigated. The structure of the product was analyzed by infrared spectroscopy. In addition, the product properties such as thermal stability, salt resistance and calcium resistance The test. The optimal conditions for the graft copolymerization were: m (calcium lignosulphonate): m (acrylamide) = 1: 5, initiator concentration 4.2 × 10-3mol.L-1, reaction temperature 50 ℃, reaction time 2h. The infrared spectrum of the graft copolymer showed that graft copolymerization occurred between calcium lignosulfonate and acrylamide. Graft copolymer has a certain thermal stability, salt resistance, good calcium resistance.