聚丁二烯季铵盐的合成及其对钠基蒙脱土的插层与表征

以端羟基聚丁二烯（HTPB）液体橡胶、环氧氯丙烷和w=33%的三甲胺水溶液为原料，三氟化硼乙醚络合物为催化剂，采用酸催化法合成大分子聚丁二烯液体橡胶季胺盐（HTPB-QAS）。研究了物料物质的量之比、催化剂用量、开环时间、开环温度及闭环时间对HTPB羟基转化率的影响，红外光谱（FT-IR）与核磁共振谱图（¹H-NMR）表明成功地合成了HTPB-QAS，羟基最大转化率为65.7%。采用溶液法和静置法将HTPB-QAS插层钠基蒙脱土，制得聚丁二烯液体橡胶-蒙脱土纳米复合材料（HTPB-OMMT）。X射线衍射（XRD）、小角X射线散射（SAXS）、热重分析（TGA）和透射电子显微镜（TEM）分析结果表明，HTPB-QAS成功插入钠基蒙脱土片层中，并且复合材料热稳定性得到明显提高。

Synthesis of Polybutadiene Quaternary Ammonium Salt and Its Intercalation into Montmorillonite

Macromolecule polybutadiene quaternary ammonium salt (HTPB-QAS) was prepared by acid catalytic method using hydroxyl terminated polybutadiene (HTPB),epichlorohydrin and w=33% trimethylamine solution as starting materials and three boron fluoride ethyl ether complexes as the catalyst.The effects of material ratio, catalyst amount,ring-opening time and temperature,and ring-closing time on the conversion rate of hydroxyl group in HTPB were studied.HTPB-QAS was successfully synthesized with the conversion rate of hydroxyl group of 65.7% as confirmed by FT-IR and ¹H-NMR.By solution method and static method,HTPB-QAS was intercalated into Na-MMT to obtain HTPB and Na-MMT nanocomposites (HTPB-OMMT).XRD,SAXS,FT-IR and TEM results showed that HTPB-QAS was successfully inserted into Na-MMT layers,and TGA results showed that the thermal stability of the composites was improved obviously.