探索海藻衍生物在生物降解塑料开发中的潜力:一项比较研究
Wan Amnin Wan Yahaya1, Nurul Aini Mohd Azman1,2, Fatmawati Adam1,2
1Faculty of Chemical and Process Engineering Technology, Universiti Malaysia Pahang, Lebuhraya Persiaran Tun Khalil Yaakob, Gambang 26300, Pahang, Malaysia.
Polymers
|July 14, 2023
概括
这项研究开发了由由纤维素纳米纤维增强的海藻衍生物生物降解膜. 半精制的卡拉基南薄膜表现出优异的机械性能和低的水透性,使它们成为食品包装的理想选择.
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
- 生物技术是生物技术.
背景情况:
- 传统的塑料对废物处理构成了挑战.
- 来自生物聚合物的可生物降解薄膜提供了一个可持续的替代方案.
- 海藻衍生物是有前途的生物聚合物来源.
研究的目的:
- 探索海藻衍生膜 (Kappaphycus alvarezii,kappa carrageenan,精制 carrageenan,半精制 carrageenan) 作为生物基材料.
- 为了研究纤维素纳米纤维 (CNFs) 从棕废弃物强化对薄膜特性的影响.
- 描述糖醇塑化海藻/CNF复合膜的机械,物理和热性能.
主要方法:
- 使用四种海藻衍生物 (KA,KC,RC,SRC) 制备可生物降解薄膜,含有甘油和不同度的CNF (0-15%).
- 包括机械测试,厚度,水分含量,不透明度,水溶性,水蒸气透性和热稳定性的综合性表征.
- 密度函数理论 (DFT) 计算使用高斯视图软件来确定键.
主要成果:
- 卡帕菲克斯·阿尔瓦雷齐 (KA) + 糖醇 + 10% CNF薄膜由于表面缺陷而表现出较差的机械性能 (18.50 MPa).
- 精制的卡拉基安 (RC) + 甘油 + 10% CNF薄膜具有高拉伸强度 (48.23 MPa) 和水蒸气透性,但也具有高水溶性 (66%).
- 半精制卡拉基安 (SRC) + 甘油 + 10% CNF 薄膜表现出优异的机械性能 (45.98 MPa),低水溶性 (42.59%),低水蒸气透性 (1.3719 × 10-11 g s-1 m-1 Pa) 和高热稳定性 (250.62 °C).
结论:
- 用纤维素纳米纤维增强的半精炼卡拉基显示出开发高性能生物降解膜的巨大潜力.
- SRC + G + 10%CNF复合膜表现出机械强度,低水透性和热稳定性的良好平衡.
- 这些特性使得基于SRC的薄膜适用于食品包装等应用,与其他配方相比,提供更好的性能和稳定性.
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