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在土壤堆肥下对梨废物聚合物纤维的生物降解性评估

Zormy Nacary Correa-Pacheco¹, Silvia Bautista-Baños¹, José Jesús Benítez-Jiménez²

¹Centro de Desarrollo de Productos Bióticos, Instituto Politécnico Nacional, Carretera Yautepec-Jojutla, Km. 6, Calle CEPROBI, No. 8, San Isidro, Yautepec 62731, Morelos, Mexico.

|October 28, 2023

概括

梨粉增强了聚乳酸 (PLA) 和聚乙烯基酸盐-联合甲酸盐 (PBAT) 纤维的生物降解性. 这些环保复合材料在堆肥过程中表现出显著的降解和结构变化.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
聚合物科学聚合物科学

背景情况:

环境污染需要可持续的材料解决方案.
像PLA和PBAT这样的生物降解聚合物为传统塑料提供了替代品.
结合天然填充剂可以改变聚合物特性并提高生物降解性.

研究的目的:

评估刺梨粉 (PPF) 对PLA/PBAT纤维特性的影响.
在堆肥条件下评估这些复合材料的生物降解性和结构变化.
调查PPF对热和机械特性的影响.

主要方法:

用PPF,甘露油 (CO) 和酸 (AA) 挤出PLA/PBAT纤维.
堆肥时间为3个月和6个月.
使用减肥测量,光学显微镜,扫描电子显微镜 (SEM),富里埃变换红外光谱 (FTIR) 和微分扫描热量计 (DSC) 的分析.

主要成果:

与PPF,CO和AA的混合物在6个月的堆肥后显示了92%的体重减轻.
SEM和FTIR证实了结构修改和降解,特别是和半纤维素相关群体的减少.
DSC表明结晶和点增加,而机械性能,特别是模量,随着降解时间的推移而下降.

结论:

梨粉作为一种可行的添加剂,促进了基于PLA/PBAT的纤维复合材料的生物降解性.
这项研究表明,在开发可持续材料中使用农业废物 (如PPF) 的潜力.
这些发现表明,创造更环保的聚合物复合材料的途径.

关键词:

降解时间降解时间机械性能机械性能机械性能形态学形态学形态学热性质热性质热性质减肥减肥减肥减肥减肥减肥

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