可再生高强度纤维素基包装材料制备及其智能化应用

Preparation and Intelligent Application of Renewable High Strength Cellulose-based Packaging Material

关键词:  离子液体  再生纤维素  智能包装  石墨烯

Key Words:ionic liquid  regenerated cellulose  intelligent packaging  graphene

摘要:本研究提出了一种高强度可降解纤维素基复合打包带替代传统聚乙烯打包带的可靠策略，采用离子液体溶解制备再生纤维素材料，探讨了石墨烯对其导电性和机械性能的影响，从而制备高强度新型可再生复合打包带，并初步探索了其在智能包装领域的应用前景。结果表明，纤维素含量5%时，制得的再生纤维素丝和再生纤维素膜的拉伸强度分别可达194和74 kPa；双层打包带的最大应力可达26.3 MPa；再生纤维素打包带对于环境湿度和压力变化响应灵敏且具有良好的抗水性和生物降解性；纤维素和石墨烯质量比为1∶1时，纤维素/石墨烯复合材料电导率达0.8 S/m。

Abstract:In this study， a reliable strategy to prepare high-strength degradable cellulose composite packing tape was proposed to replace traditional polypropylene packing tape. The regenerated cellulose material was prepared by ionic liquid dissolution. The influence of graphene on its electrical conductivity and mechanical properties was discussed. Thus， a new type of high strength renewable composite packing tape was prepared， in order to explore its application prospect in the field of intelligent packaging. The results showed that the tensile strength of the regenerated cellulose filament and regenerated cellulose film could reach 194 and 74 kPa， respectively. The maximum stress strength of the double-layer cellulose base packing tape could reach 26.3 MPa. The regenerated cellulose packing tape was sensitive to variations in ambient humidity and pressure， and the composite tape had good water resistance and biodegradability. The electrical conductivity of cellulose/graphene composites could reach 0.8 S/m with the mass ratio of cellulose and graphene was 1∶1.