Preparation of konjac glucomannan-grafted poly(trimethyl allyl ammonium chloride) (KGM- g -PTMAAC) was carried out using KGM as polysaccharide matrix and TMAAC as cationic comonomer to develop biodegradable flocculants. The structure of KGM- g -PTMAAC was characterized by FTIR, 13 C solid-state NMR, elemental analysis (EA) and SEM. Thermal properties of KGM- g -PTMAAC were studied by thermal gravimetric (TG) analysis. In addition, flocculation properties of KGM- g -PTMAAC were investigated in a kaolin suspension. The results of the FTIR, NMR, and EA showed that the cationic moiety containing quaternary ammonium has been introduced in the backbone of KGM. SEM images indicated that the surface of KGM- g -PTMAAC was rougher than that of KGM. TG results indicated that the thermal stability of KGM- g -PTMAAC was different to that of KGM. The obtained products had a good biodegradable performance. Moreover, the results of the flocculation test showed that KGM- g -PTMAAC could be potentially used as a good flocculating agent.

中文翻译：

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生物可降解魔芋葡甘露聚糖接枝聚（三甲基烯丙基氯化铵）的制备及絮凝性能

魔芋葡甘露聚糖接枝的聚（三甲基烯丙基氯化铵）（KGM-g-PTMAAC）的制备是使用 KGM 作为多糖基质和 TMAAC 作为阳离子共聚单体进行的，以开发可生物降解的絮凝剂。KGM-g-PTMAAC的结构通过FTIR、 13 C固态NMR、元素分析(EA)和SEM表征。KGM-g-PTMAAC 的热性能通过热重 (TG) 分析进行研究。此外，在高岭土悬浮液中研究了 KGM-g-PTMAAC 的絮凝特性。FTIR、NMR 和 EA 的结果表明，在 KGM 的主链中引入了含有季铵的阳离子部分。SEM 图像表明 KGM-g-PTMAAC 的表面比 KGM 的表面更粗糙。TG 结果表明 KGM-g-PTMAAC 的热稳定性与 KGM 不同。所得产品具有良好的生物降解性能。此外，絮凝试验的结果表明，KGM-g-PTMAAC 有可能用作良好的絮凝剂。