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稳定性研究,生物降解测试和含有表面活性剂的酸和盖伦珠的机械性能
Natalia Stachowiak1, Jolanta Kowalonek1, Justyna Kozlowska1
1Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina St. 7, 87-100 Torun, Poland.
Polymers
|June 10, 2023
概括
研究人员从天然聚合物中开发出可生物降解的珠子,以取代塑料湿巾. 这些环保的珠子在土壤和海水中降解,为减少塑料污染提供了一个可持续的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 聚合物化学 聚合物化学
背景情况:
- 一次性塑料,特别是湿巾中的一次性塑料,由于其缓慢的分解,对全球塑料垃圾有很大贡献.
- 开发能够保持功能性的可生物降解替代品对于环境可持续性至关重要.
研究的目的:
- 创建和评估由酸和糖制成的环保珠子,以作为塑料制品的可持续替代品的潜在用途.
- 评估这些天然聚合物珠子在各种条件下的稳定性,机械性能和生物降解.
主要方法:
- 珠子是通过离子转化凝合成的,使用甲基酸盐,凝糖和表面活性剂混合物.
- 通过将珠子化在不同pH值 (酸性,中性,性) 的溶液中,并观察尺寸和外观的变化,来测试稳定性.
- 通过在不同pH值下进行压缩试验来评估机械性能.
- 在土壤和海水中使用呼吸计方法评估生物降解.
主要成果:
- 珠子在酸性条件下表现出缩小的尺寸,并在中性酸盐缓冲盐水中胀.
- 所有珠子配方在性条件下膨胀并随后降解.
- 基于格兰和混合聚合物的珠子对pH值变化最不敏感.
- 珠子的刚度随着pH值的增加而降低,在酸性溶液中比性溶液更为刚硬.
- 与海水相比,土壤中的生物降解速度更快.
结论:
- 生物降解的珠子制成的酸和糖显示承诺作为一个环保的替代传统的塑料产品.
- pH 稳定性和生物降解率表明控制降解有利的潜在应用.
- 进一步的研究可以为特定的洗和降解性能优化配方.
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