花生壳提取物/PBS复合包装材料的制备与性能研究

Preparation and performance of peanut shell extract/PBS composite packaging materials

将废弃花生壳中抗氧化性的黄酮类化合物与脂肪族聚酯聚丁二酸丁二醇酯(PBS)复合,所得复合材料T/PBS具有抗氧化性能和可降解性。对复合材料的热力学性能、表面形貌、水蒸气透过率、抗氧化性等进行了测试。结果表明,T/PBS复合材料中花生壳提取物可充分保留其抗氧化性能,并且对复合材料的结晶产生异相成核的作用。T/PBS复合材料的热稳定性在少量添加时有所提高;复合材料的亲水性能、水蒸气透过率和DPPH自由基清除率均随着花生壳提取物质量分数的增加依次增强。花生壳提取物质量分数为9%时,复合材料的水蒸气透过率可达到696.983 g/(m^(2)·d),在水中释放的抗氧化性为30.13%,该材料可作为可降解型活性包装材料推广应用。

Flavonoids with oxidation resistance are extracted from spent peanut shells,and compounded with polybutylene succinate(PBS)to prepare T/PBS composites with oxidation resistance and degradability.The thermodynamic properties,surface morphology,water vapor permeability and oxidation resistance of the composites are tested.It is shown that peanut shell extract in T/PBS composites can retain its antioxidant activity and produce heterogeneous nucleation on the crystallization of the composites.The thermal stability of T/PBS composites is improved when the content of peanut shell extract is small.The hydrophilic property,water vapor permeability and DPPH radical scavenging rate of the composites are enhanced with the increasing peanut shell extract content.The water vapor permeability of the composites reaches 696.983 g·m^(2)·d^(-1)and the antioxidant capacity of the composites in water is 30.13%when the dosage of peanut shell extract is 9%.The composites are recommended as a degradable active packaging material.