A new biodegradable sisal fiber-starch packing composite with nest structure

作者：Xie, Qi; Li, Fangyi^*; Li, Jianfeng; Wang, Liming; Li, Yanle; Zhang, Chuanwei; Xu, Jie; Chen, Shuai

来源：Carbohydrate Polymers, 2018, 189: 56-64.

DOI：10.1016/j.carbpol.2018.01.063

• Sisal fiber-starch packing composites
• Alkaline treatment
• Cushioning property
• Nest structure
• Compatibility
• Biodegradability

A new completely biodegradable sisal fiber-starch packing composite was proposed. The effects of fiber content and alkaline treatment on the cushioning property of the composites were studied from energy absorption efficiency, cellular microstructure and compatibility between fiber and starch. With increasing fiber content, the nest structure of composites becomes dense first and then loosens, resulting in initial enhancement and subsequent weakening of the cushioning property of the composites. The composite with 4:13 mass ratio of fiber and thermoplastic starch (TPS) exhibit the optimal cushioning property. Alkaline treatment increases the compatibility between sisal fiber and TPS, promotes the formation of dense nest structure, thereby enhances the cushioning property of the composites. After biodegradability tests for 28 days, the weight loss of the composites was 62.36%. It's found that the composites are a promising replacement for expandable polystyrene (EPS) as packing material, especially under large compression load (0.7-6 MPa).

• 出版日期2018-6-1
• 单位山东大学