添加剂对香粉基生物塑料薄膜的发展,机械,功能特性和生物降解性的影响
Thayumanavan Shuprajhaa1, Suresh Kumar Paramasivam1, Subramaniyan Pushpavalli1
1ICAR-National Research Centre for Banana, Tiruchirappalli, Tamil Nadu 620102, India.
International journal of biological macromolecules
|January 8, 2025
概括
这项研究探讨了聚乙醇 (PVA) 和甲基纤维素 (CMC) 如何影响香粉生物塑料. CMC提高了机械强度和光泽度,而PVA提高了透明度,为可持续的塑料替代品提供了见解.
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
- 可持续材料 可持续材料
背景情况:
- 基于粉的生物塑料是传统塑料的环保替代品.
- 添加剂在定制生物塑料功能方面发挥着至关重要的作用.
- 香粉为生物塑料生产提供了一种可再生资源.
研究的目的:
- 调查聚乙醇 (PVA) 和碳甲基纤维素 (CMC) 对香粉基生物塑料薄膜的影响.
- 评估不同度的PVA和CMC,用糖醇作为增塑剂,如何影响薄膜的性能.
- 为设计改进的香粉生物塑料提供见解.
主要方法:
- 制备基于香粉的生物塑料薄膜,含有不同度的PVA和CMC,使用甘油作为塑化剂.
- 薄膜的特性,包括L*值,厚度,可溶性,吸水能力,水蒸气传递率 (WVTR),氧传递率 (OTR),光泽度,抗拉强度和破裂时的延长.
- 使用富里埃变换红外光谱 (FTIR) 和X射线衍射 (XRD) 分析膜形态和化学结构.
主要成果:
- 与PVA片相比,用CMC增强的片显示出更高的L*值和厚度,更高的溶解度和吸水能力.
- 富含水分的薄膜 (C3,PC2:1) 呈现出更高的WVTR,而PVA薄膜的OTR.较低.
- 添加CMC提高了光泽度和抗拉强度,而PVA提高了透明度和破裂时的延长.
- FTIR和XRD分析证实了香粉的存在,并表明CMC对极性和结晶性的影响.
结论:
- 无论是PVA还是CMC都显著改变了香粉生物塑料的特性.
- 在提高机械性能和光泽方面,CMC是有效的,而PVA提高了透明度.
- 这些发现支持针对特定应用的香粉基生物塑料的定制设计,促进可持续性.
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