一种多功能大豆蛋白质隔离物交叉连接的凝复合覆膜:制造,表征和应用
Qiansen Wang1, Cong Jiang1, Hong Wang1
1Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
International journal of biological macromolecules
|November 6, 2024
概括
由大豆蛋白分离物和凝制成的新型生物降解片提供了增强的强度和耐水性. 这些环保电影改善了种子的发芽,并支持可持续的农业实践.
科学领域:
- 生物材料科学 生物材料科学
- 可持续农业 可持续农业
- 聚合物化学 聚合物化学
背景情况:
- 对于可持续农业的日益增长的需求,需要为传统的皮膜提供环保的替代品.
- 基于生物质的可生物降解薄膜提供了一个有前途的解决方案,但往往需要增强的特性.
- 大豆蛋白分离物 (SPI) 和凝 (Gel) 是丰富的生物聚合物,具有膜开发的潜力.
研究的目的:
- 设计和制造环保和多功能复合覆膜,使用与凝 (SPI-c-Gel) 交联的大豆蛋白质分离物.
- 调查希夫基反应对SPI-c-Gel复合膜物理和化学性能的影响.
- 评估这些复合膜在机械强度,耐水性和农业应用方面的性能.
主要方法:
- 复合膜是通过希夫基反应使用大豆蛋白分离物和凝合成的.
- 分析了机械性能 (拉伸力和应力) 和水的膨胀行为.
- 评估了保持水分,缓慢释放尿素和生物降解性.
- 使用白菜种子进行了应用实验,以评估发芽和生长.
主要成果:
- 优化的SPI-c-Gel复合材料覆盖膜 (SPI-c-Gel0.3) 与纯SPI薄膜 (SPI-c-Gel4.05MPa在73.3%的应变) 相比,显著提高了拉伸强度 (14.7MPa在151%的应变).
- 水的膨胀率从纯SPI薄膜的280%降低到SPI-c-Gel0.3薄膜的141%,表明增强了耐水性.
- 复合膜表现出令人满意的保留水分,尿素缓释特性和生物降解性.
- 用SPI-c-Gel0.3覆盖的卷心菜种子显示出加速发芽和生长.
结论:
- 希夫基交叉连接有效地提高了SPI-Gel复合膜的机械性能和耐水性.
- 这些多功能生物聚合物基片适合促进可持续农业.
- 开发的SPI-c-Gel复合膜为创建先进的可生物降解农业材料提供了一个新的策略.
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