生物降解,紫外线阻断和抗氧化膜来自消化的切换草的细胞纤维残留纤维
Sajal Bhattarai1, Srinivas Janaswamy2
1Dairy and Food Science Department, South Dakota State University, Brookings, SD, 57007, USA; Department of Food Science, Purdue University, West Lafayette, IN, 47907, USA.
Chemosphere
|May 22, 2024
概括
来自草残留物的生物降解薄膜为塑料提供了一个可持续的替代品. 这些生物友好的材料表现出强大的机械性能,UV阻断和抗氧化活性,支持循环经济.
科学领域:
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
- 环境科学 环境科学
背景情况:
- 迫切需要生物友好的材料来取代一次性塑料.
- 来自植物的纤维素材料是有希望的替代品.
- 为了防止枯竭,农业生物质,如交换草,比森林资源更受青.
研究的目的:
- 开发可生物降解的薄膜从交叉草的纤维纤维素残留物.
- 为了研究消化和交叉链接对薄膜特性的影响.
- 评估这些薄膜作为传统塑料的可持续替代品的潜力.
主要方法:
- 使用NaOH (20%和50%w/v) 从草中提取红纤维素残留物.
- 在水中溶解ZnCl2并与CaCl2交叉连接 (200500毫米).
- 薄膜的特性,包括机械强度,水相互作用,紫外线透射率和生物降解.
主要成果:
- 薄膜具有很高的抗拉强度 (14.7 MPa) 和延伸度 (4.7%).
- 水蒸气透性,延长,紫外线透射率和生物降解等属性受到CaCl2度的影响.
- 增加的CaCl2提高了透明度,抗拉强度和抗氧化活性,同时降低了水蒸气透性和生物降解.
结论:
- 性消化过关草的纤维素残留膜显示出作为轻质塑料的替代品的极佳潜力.
- 开发的电影通过其生物降解性和可持续采购来支持循环经济的原则.
- 优化交联剂度允许根据特定应用量身定制薄膜特性.
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