柔性,高素含量热阻膜和涂料
Alice Boarino1, Justine Charmillot2, Monique Bernardes Figueirêdo2
1Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères, École Polytechnique Fédérale de Lausanne (EPFL), Station 12, CH-1015 Lausanne, Switzerland.
ACS sustainable chemistry & engineering
|November 29, 2023
概括
氧酸红素 (GA红素) 为石油塑料提供了可反应的替代品. 这种可持续材料可用于制造具有调节性质,抗氧化剂和UV阻能力的膜和涂层,用于食品包装.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 生物质的价值化 生物质的价值化
背景情况:
- 素是一种天然聚合物,丰富且具有成本效益,但由于从苛刻的提取方法中获得的低反应性,在塑料中未得到充分利用.
- 基于石油的塑料有助于环境污染,需要可持续的替代品.
研究的目的:
- 开发一种高度反应的素衍生物,以创造可持续的塑料替代品.
- 探索氧酸红素 (GA红素) 在热膜和涂料中的使用.
- 评估基于GA素的材料的性能和潜在应用.
主要方法:
- 从生物质中直接提取GA木质素,使用单步化辅助分化工艺.
- GA 红素与可持续的环氧交叉连接剂 (聚乙烯甘) 滴糖乙烯和甘滴糖乙烯的反应.
- 制造独立的耐热薄膜和表面附着涂料.
主要成果:
- 富含碳酸基的GA素,与环氧交叉连接剂具有很高的反应性.
- 准备了高达70%重量%的热膜和可调节的机械性能.
- 获得了高达90%重量%的素和高溶剂耐受性的共振表面粘合涂层.
- 薄膜和涂层都表现出抗氧化特性,紫外线屏障活性和高可见透明度.
结论:
- 酸是一种有前途的,高度反应性的生物基替代品,用于生产可持续的热材料.
- 由于其特性,开发的薄膜和涂层显示了对环保食品包装应用的潜力.
- 这种方法提供了一条可行的途径,用于将木质素价值化为高性能材料.
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