评估用利格宁强化的聚乙烯酸盐复合材料和磨的麻茎
Nnaemeka Ewurum1, Courage Alorbu1, Lili Cai2
1Department of Forest, Rangeland and Fire Sciences, University of Idaho, Moscow, ID 83844, USA.
Materials (Basel, Switzerland)
|January 28, 2026
概括
这项研究探讨了 kraft 质素,大麻和双过氧化物 (DCP) 如何影响聚丁烯酸盐 (PBS) 复合材料. 交叉连接的混合木质素-大麻复合材料 (R-PLH) 显示出更好的刚性和热稳定性,但拉伸强度和耐候性降低.
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
- 可持续材料 可持续材料
背景情况:
- 聚乙烯酸盐 (PBS) 是一种可生物降解的聚合物,具有可持续应用的潜力.
- 将天然纤维和素纳入聚合物可以增强性能,但需要谨慎的配方.
- 交叉连接剂,如二甲基过氧化物 (DCP),可以提高聚合物复合材料的性能.
研究的目的:
- 为了研究 kraft 质素,磨大麻茎和 DCP 交联对 PBS 复合材料的影响.
- 评估这些复合材料的风湿学,机械,热,天气和真菌抵抗性质.
- 评估混合宁-大麻PBS复合物的可持续应用潜力.
主要方法:
- 通过双螺丝挤出生产了两系列复合材料:简单混合物 (B系列) 和DCP交联配方 (R系列).
- 特别强调的是混合性木质素-大麻复合物 (B-PLH和R-PLH).
- 分析的属性包括质,机械性能 (柔性和拉伸性),热稳定性,吸水性,加快气候变化和真菌降解.
主要成果:
- 大麻纤维增加了粘度,红素减少了,DCP增强了剪切稀释行为.
- 与DPC交叉连接的混合木素-大麻复合材料 (R-PLH) 显示,曲强度增加了16%,曲模量增加了2.4倍,但与纯PBS相比,拉伸强度下降了19%.
- 复合材料表现出更好的热稳定性,减少了质量损失率和增加了炭火形成. 由于大麻纤维和DCP,吸水量增加. 加快的气候变化导致了显著的退化,特别是在R-PLH.
- 所有复合材料都显示出有限的真菌降解 (≤2%的质量损失).
结论:
- 混合宁-大麻PBS复合材料,特别是DCP交联复合材料 (R-PLH),提供了增强的刚性和热稳定性.
- 存在权衡,包括降低拉伸强度和耐候性,这些必须考虑实际应用.
- 这些复合材料为更可持续的材料解决方案提供了可行的途径,平衡性能与环境考虑.
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