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从消耗的咖啡粉制造具有紫外线阻断和高强度性能的可生物降解薄膜

Shaokai Zhang¹, Xue Zhang², Xiaofang Wan¹

¹State Key Lab of Pulp and Papermaking Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510641, China.

Carbohydrate polymers

|September 22, 2023

概括

研究人员从废弃咖啡粉和溶解纸中创建了一个多功能生物质膜. 这种可持续材料提供出色的紫外线保护,机械强度和生物降解性,性能优于商业塑料.

科学领域:

材料科学材料科学材料科学
生物质的价值化生物质的价值化
可持续的高分子.

背景情况:

消耗的咖啡粉 (SCG) 是一个重要的废物流.
从SCG开发增值产品对于可持续性至关重要.
生物质薄膜为传统塑料提供环保的替代品.

研究的目的:

使用SCG和溶解纸制备一个多功能生物质薄膜.
为了增强基于SCG的膜的机械性能.
评估复合膜的光学,机械和生物降解性能.

主要方法:

溶解和再生过程.
加入溶解纸作为强化剂.
光学性质 (UV阻断,雾) 和机械性质 (拉伸强度,模量) 的表征.
通过土壤埋葬试验评估生物降解性.

主要成果:

成功制备了含有33.3381.82重%SCG的复合膜.
一种具有66.67%重量%SCG的薄膜显示出出色的紫外线阻断 (99.43%UVB,96.59%UVA) 和高雾度 (69.22%).
一片含有33.33%重量的SCG的薄膜表现出优越的机械强度 (58.69 MPa的抗拉强度,3.13 GPa的模量) 和生物降解性 (26天内完全降解).

结论:

开发了一种简单实用的方法,用于将废弃SCG转化为高价值生物质薄膜.
复合膜在各种应用中显示出有前途的性能,有可能取代商业塑料.
这种方法有助于废物利用和开发可持续材料.

关键词:

它是生物降解的.复合电影是一种复合电影.高强度的高强度的强度.在SCG中,它是最重要的.阻紫外线的阻紫外线

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