A novel multicomponent biopolymer based nanocomposite was synthesised via graft copolymerization of butyl acrylate (BA) onto guar gum (GG) and montmorillonite (MMT) by using ammonium persulfate (APS) as a free radical initiator, in the presence of N,N′-methylene bisacrylamide (MBA) as a crosslinking agent. BA had been grafted onto GG chains and the participation of -OH groups of MMT in polymerization reaction was confirmed by FTIR spectra. XRD and TEM observations revealed that MMT was exfoliated and uniformly dispersed in guar gum-g-poly (butyl acrylate) (GG-g-PBA) matrix. The resultant nanocomposite showed remarkably improved thermal stability and mechanical properties. In addition, the excellent fire retardancy of nanocomposite results from the formation of compact and continuous char which not only hinders the migration of volatile decomposition products out of polymer matrix but also provides barrier for heat transfer evaluated by limiting oxygen index (LOI) and cone calorimetry test. The biodegradation of nanocomposite has been carried out for better commercialization and environmental concern.

在N，N'-存在下，通过使用过硫酸铵（APS）作为自由基引发剂，通过丙烯酸丁酯（BA）接枝共聚到瓜尔胶（GG）和蒙脱石（MMT）上，合成了一种新型的基于多组分生物聚合物的纳米复合材料。亚甲基双丙烯酰胺（MBA）作为交联剂。BA已接枝到GG链上，并通过FTIR光谱证实了MMT的-OH基团参与了聚合反应。XRD和TEM观察表明，MMT被剥落并均匀分散在瓜尔胶-g-聚（丙烯酸丁酯）（GG-g-PBA）基质中。所得的纳米复合材料显示出显着改善的热稳定性和机械性能。此外，纳米复合材料具有出色的阻燃性，其形成致密而连续的炭不仅阻碍了挥发性分解产物从聚合物基体中迁移出来，而且还通过限制氧指数（LOI）和锥形量热法进行了评估，为传热提供了屏障。为了更好的商业化和环境关注，已经进行了纳米复合材料的生物降解。