用多乳酸 (PLA) 混合物优化基于梨种子和粉的可降解塑料合成,使用响应表面方法 (RSM)
Rozanna Dewi1,2, Novi Sylvia1,2, Zulnazri Zulnazri1,2
1Chemical Engineering Department, Malikussaleh University, Lhokseumawe 24353, Aceh, Indonesia.
Polymers
|August 29, 2024
概括
这项研究使用梨种子粉和多乳酸 (PLA) 提高了塑料强度. 优化混合使得一种具有改善机械性能和土壤分解能力的可生物降解塑料.
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
- 生物材料工程 生物材料工程
背景情况:
- 传统的塑料由于缓慢降解而带来了环境挑战.
- 开发可持续和可生物降解的替代品对于减少塑料污染至关重要.
- 梨种子粉为生物塑料开发提供了潜在的可再生资源.
研究的目的:
- 通过将梨种粉纳入聚乳酸 (PLA) 中,增强塑料的机械性能.
- 使用响应表面方法 (RSM) 优化梨种子粉和PLA的混合过程.
- 评估由此产生的复合材料的生物降解性和热稳定性.
主要方法:
- 混合梨种子粉与PLA,以RSM确定的最佳比例.
- 复合材料的特性使用拉伸强度,破裂时的延长和模量测试.
- 通过红外光谱学分析化学结构.
- 使用热分析评估热性质.
- 在12天内评估水的吸收和生物降解率.
主要成果:
- 发现最佳的混合比为1.8g的粉和3g的PLA.
- 可生物降解塑料的抗拉强度为10.1 MPa,破裂时的延长率为85.8%,Young的模量为190 MPa.
- 红外光谱学证实了特征键 (-OH,CH2,C=C,C-O) 的存在.
- 该材料具有良好的热稳定性,在356.86°C至413.64°C之间分解.
- 在12天后,吸水率为5.763%,生物降解率为37.988%.
- 形态分析表明粉和PLA之间的融合良好,形成光滑的表面.
结论:
- 梨种子粉可以有效地与PLA混合,以创建更强的,可生物降解的塑料.
- RSM是优化生物塑料生产混合参数的合适方法.
- 开发的材料显示出作为传统塑料的可持续替代品的潜力,具有有利的机械和降解特性.
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