黑树皮生物质的复杂价值化在刚性聚氨泡组合中
Alexandr Arshanitsa1, Matiss Pals1, Laima Vevere1
1Latvian State Institute of Wood Chemistry, Dzerbenes Street 27, LV-1006 Riga, Latvia.
Materials (Basel, Switzerland)
|January 11, 2025
概括
黑树树皮生物质被用来制造用于硬型聚氨 (PUR) 泡的生物多聚合物. 这些可持续的PUR泡显示出改进的机械和热性能,为石化材料提供了更绿色的替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 聚合物科学 聚合物科学
背景情况:
- 聚氨 (PUR) 泡被广泛使用,但依赖于化石衍生元件.
- 在材料科学中越来越需要可持续的替代品.
- 价值化生物质废物,如黑树皮,对于循环经济至关重要.
研究的目的:
- 为了研究在刚性PUR泡中使用黑树皮生物质.
- 为了从黑树皮提取物中合成生物多聚.
- 评估PUR泡的特性,包括生物聚合物和树皮填充剂.
主要方法:
- 热水提取黑树皮,以获得提取化合物.
- 通过无酸液化和氧化化进行生物多聚合物合成.
- 富里埃变换红外光谱 (FTIR) 和湿化学用于聚合物分析.
- 将生物聚合物和树皮填充剂纳入PUR泡配方中.
- 评估泡上升速度,机械性能,形态,导热率和降解.
主要成果:
- 氧化基提取基PUR泡显示了生物质含量和性能的最佳平衡.
- 压力强度在40公斤/立方米的表面密度下增加了1.4-1.5倍.
- 空气中的最大热降解率减少了3.8-6.5倍.
- 加入3.7-14%的树皮填充剂使生物质含量增加到22-24%,压力强度和热稳定性略有下降.
- 液化提取基泡的性能较低,但相比参考泡的性能仍然有所改善.
结论:
- 在PUR泡中用可再生的黑树皮生物质部分替代化石衍生成分,可以获得具有相似或优越性质的材料.
- 这种方法有助于解决环境问题和可持续的经济发展.
- 氧化黑树皮提取物是高性能,可持续的PUR泡的有希望的前体.
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