氧化木质纤维素对淀粉塑料力学和加工性能的影响

Effect of Oxidized Lignocellulose on Mechanical and Processing Properties of Thermoplastic Starch

以高碘酸钠（NaIO4）为氧化剂,将软木纸浆纤维素（WPC）中的羟基氧化成醛基形成氧化木质纤维素（OWPC）,进一步研究不同氧化比例下[m（NaIO4）/m（WPC） =0.125 ～0.5],OWPC对热塑性淀粉塑料（TPS）的增强作用.通过显微镜、傅里叶红外光谱仪、X射线衍射仪、电子拉力机和流变仪研究了不同氧化比例下OWPC的形态和结晶度的变化情况,以及OWPC对TPS的力学性能和加工性能的影响.结果表明,OWPC的添加可有效提高OWPC/TPS复合材料的力学性能和加工性能,且当m（NaIO4）/m（WPC） =0.25时,OWPC/TPS复合材料的拉伸强度最大（5.02 MPa）.

In this paper, the hydroxyl of the softwood pulp aldehyde to form oxidized cellulose （OWPC） by NaI04, so as to （ NaIO4）/m（WPC） = 0. 125 - 0. 5） of the oxidized lignocellulosic cellulose （ WPC ） was oxidized into study the different oxidation ratios （m reinforced thermoplastic starch plastics （TPS）. Microscopy, FrIR, XRD, electronic tensile machine and rheometer were used to study effects of oxidized cellulose morphology and crystallinity with oxidation ratios on the mechanical properties and processing performance of OWPC/TPS system. The results showed that the oxidized cellulose can effectively improve the mechanical properties and processing properties of OWPC/TPS system, and when the mass ratio of NalO4 to cellulose was 0. 25, OWPC/TPS had the maximum tensile strength （5.02 MPa）.