玉米芯接枝共聚物的制备及表征

摘要

Modified corncobs was prepared by graft copolymerization acrylamide(AAm)/methacrylic acid (MAA) using ferrous ammonium sulphate/H2O2 as a redox initiator.The modified corncobs was characterized by FTIR,SEM,BET method (Brunauer Emmett and Teller),and TGA,respectively.The results showed that AAm and MAA were successfully grafted onto corncobs backbone,comparing with ungrafted corncobs,grafted corncobs' surface area decreased,but the thermal stability improved.%以丙烯酰胺(AAm)、甲基丙烯酸(MAA)为混合单体,硫酸亚铁铵(FeAmSO4)-过氧化氢(H2O2)氧化还原体系为引发剂,对玉米芯进行接枝共聚改性,并采用傅里叶变换红外光谱(FTIR)、扫描电镜(SEM)、比表面积分析(BET)及热重分析(TGA)等进行表征.结果表明,单体AAm与MAA成功接枝到玉米芯大分子上,玉米芯的比表面积有所降低,但仍具有良好的热稳定性能.