以魔芋葡甘聚糖(KGM)、壳聚糖(CTS)和羧甲基纤维素钠(CMC-Na)作为成膜基质,凹凸棒石为填料,甘油为增塑剂,采用共混法制备了魔芋葡甘聚糖-壳聚糖-羧甲基纤维素钠/凹凸棒石纳米复合材料.利用正交实验考察了3种基质的添加比例、甘油用量和凹凸棒石用量对复合材料结构和力学性能的影响,并通过FT-IR、SEM对复合材料进行了表征.结果表明,当KGM、CTS、CMC-Na 3种主要成膜材料的配比为1∶1∶0.5,甘油用量为魔芋用量的3％,凹凸棒石用量为魔芋用量的0.4％时,复合材料具有较佳的力学性能.红外光谱(FTIR)分析表明魔芋葡甘聚糖、壳聚糖、羧甲基纤维素钠和凹凸棒石发生了相互作用；扫描电子显微镜(SEM)分析表明凹凸棒石与高分子复合效果良好.%Attapulgite were dispersed into konjac glucmannan(KGM), chitosan(CTS) and sodium carboxymethyl cellulose(CMC- Na) matrix with glycerine to get composites through blending method. The factors including the different blend ingratios of konjac glucomannan, chitosan and sodium carboxymethyl cellulose, the dosage of attapulgite and glycerine which affecting the structure and the mechanical performance of composites were observed by orthogonal experimental design. The composites were characterized by fourier transform infrared spectra(FTIR) and scanning electron microscopy(SEM).The mechanical properties suggested that the composites are the best when m(KGM):m(CTS):m(CMC-Na), the dosage of attapulgite and glycerine werel: 1:0.5, 0.4% and 3% respectively.The results from FT-IR spectra showed that there was strong interaction in attapulgite, konjac glucmannan, chitosan and sodium carboxymethyl cellulose. SEM showed attapulgite combined well with the copolymer matrix.
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