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用石墨烯氧化物增强和动态交叉链接的生物弹性体用于聚氨酸 (乳酸) 修改.

Bingnan Zhou1, Cunai Zheng1, Ruanquan Zhang1

  • 1Fujian Province Key Laboratory of Polymer Science, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China.

Molecules (Basel, Switzerland)
|June 19, 2024
PubMed
概括

研究人员开发了一种新的方法,使用生物elastomer和石墨烯氧化物纳米粒子来加固聚乳酸 (PLA). 这提高了柔性和强度,创造了具有形状记忆和抗静电性能的多功能塑料替代品.

关键词:
经氧化大豆油的使用.石墨烯氧化物 石墨烯氧化物聚乳酸) 是一种乳酸.硬化硬化 硬化硬化

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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
  • 纳米技术纳米技术

背景情况:

  • 聚乳酸 (PLA) 是一个有前途的生物来源,可生物降解的塑料替代品.
  • 薄弱的柔性限制了PLA的广泛应用.
  • 硬化PLA通常会损害其固有的强度,从而造成重大挑战.

研究的目的:

  • 为了加固聚乳酸 (PLA),同时保持其强度.
  • 为了引入额外的功能,如形状记忆和反静态特性.
  • 为了利用用氧化石墨烯纳米粒子增强的生物弹性材料.

主要方法:

  • 合成了一种纳米粒子增强的动态交联弹性体 (GESO) 来自氧化大豆油 (ESO),脂酸 (SA) 和石墨烯氧化物 (GO) 的纳米粒子.
  • 通过超声波实现了统一的GO分散,并将GO纳入ESO-SA交联反应.
  • 与PLA混合的融化GESO,利用界面反应来实现兼容性.

主要成果:

  • GESO显著提高了PLA的延展性,在断裂时的延长率增加了约274.5% (比纯PLA高31倍).
  • 与纯PLA相比,冲击强度提高了约2.5倍,强度损失最小.
  • 在~0.67重量%的优化GO负载实现了性能最佳平衡.
  • 经过修改的PLA混合物表现出优异的形状记忆和抗静电性能.

结论:

  • 开发的GESO材料有效地使PLA变硬,而不会牺牲强度.
  • 整合GO纳米粒子和动态交叉链接赋予了新的功能.
  • 这种方法为创建先进,可持续的聚合物材料提供了可行的策略.