冷处理使得可伸缩但机械强大的全纤维素复合材料成为可能
Penghui Zhu1, Andrea Vo1, Xia Sun1
1Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver V6T 1Z4, Canada.
Nano letters
|March 7, 2025
概括
研究人员开发了一种可扩展的方法,用于创建强大,可拉伸的全纤维素复合材料 (ACC). 这项创新为包装应用提供了塑料的可持续替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 可持续材料 可持续材料
背景情况:
- 可生物降解的纤维素薄膜显示出塑料替代品的潜力.
- 开发具有高机械强度的可拉伸全纤维素复合材料 (ACC) 仍然是一个重大挑战.
研究的目的:
- 提出一个可扩展的策略,用于制造可伸缩和机械坚固的ACC.
- 为增强材料性能设计多尺度纤维素架构.
主要方法:
- Kraft 纸经过机械预处理和冷 NaOH 处理.
- 胀再生的微纤维与溶解再生的纤维素进行了整合.
- 用真空过和压干燥来形成多尺度架构.
主要成果:
- 开发的ACC具有89.0MPa的抗拉强度和24.7%的应变到故障.
- 与微纤维化纤维素薄膜相比,该材料的强度是1.3倍,伸展能力是1.5倍,性是3.8倍.
- ACC具有增强的湿强度,耐油脂性和氧气屏障性能.
结论:
- 该研究成功地展示了一种可扩展的方法,用于创建高性能ACC.
- 工程化多尺度纤维素网络为先进的包装材料提供了可行的,可持续的解决方案.
- 开发的ACC为传统塑料提供了一个有希望的环保替代品.
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