• 文献标题:   Design of heat sealable starch-chitosan bioplastics reinforced with reduced graphene oxide for active food packaging
  • 文献类型:   Article
  • 作  者:   ALVES Z, FERREIRA NM, FERREIRA P, NUNES C
  • 作者关键词:   bionanocomposite, blend, antioxidant activity, sealing, electrical conductivity
  • 出版物名称:   CARBOHYDRATE POLYMERS
  • ISSN:   0144-8617 EI 1879-1344
  • 通讯作者地址:  
  • 被引频次:   6
  • DOI:   10.1016/j.carbpol.2022.119517 EA MAY 2022
  • 出版年:   2022

▎ 摘  要

Interest in producing films from renewable and biodegradable polymers, such as polysaccharides, has increased in recent years with the aim of reducing the environmental pollution caused by petroleum-based plastics. Additionally, combining the thermoplastic property of starch with the antioxidant and antimicrobial activities of chitosan is of great interest to develop active materials for food packaging. This study aims the preparation of thermoplastic blended starch-chitosan films mechanically reinforced with reduced graphene oxide (rGO). Blending the starch with chitosan and rGO showed that films had a hydrophobic surface (>100 degrees), low water solubility (weight loss less than 10%), and improved antioxidant activity. Furthermore, blended film prepared with 75% starch and 25% chitosan with rGO achieved the maximum value of electrical conductivity (6.51 x 10-3 S/m) while maintaining the heat sealing properties of starch. The functional properties and heat sealability of starch-chitosan blended films with rGO enhance their application for active food packaging.