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Types of Step-Growth Polymers: Polyesters01:20

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
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通过使用不同类型的聚氨酸酸盐,生成生物基,形状和温度稳定的三维非织造结构.

Tim Hiller1, Frederik Gutbrod2, Louisa Bonten1

  • 1German Institutes of Textile and Fiber Research (DITF), Koerschtalstr. 26, D-73770 Denkendorf, Germany.

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概括

聚氨基酸盐 (PHAs) 现在可以通过利用它们的融粘附来形成尺寸稳定的无件. 一种新的共聚合物,聚3-基酸-co-3-基酸 (PHBH),显示出更好的灵活性和弹性,特别是在塑化剂.

关键词:
生物聚合物是一种生物聚合物.炼加工是炼过程中的一种.融化爆发 (n) 在无布是一种无布.聚基乙酸 (P3HB) 是一种聚基乙酸 (P3HB)聚基酸-基酸-基酸-基酸 (PHBV) (PHBV) 是一种基酸.聚基基酸 (PHBH) 是一种基基酸 (基基酸) 化合物.聚基基酸盐的多基基酸盐类风病学 类风病学 类风病学可持续性 可持续性的可持续性

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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
  • 生物材料工程 生物材料工程

背景情况:

  • 聚氨基酸盐 (PHAs) 和聚3-基酸盐 (P3HB) 一样,对化无织品有很大的前景,但由于脆性和延伸性较低而受到影响.
  • 以前,PHA固有的融粘附和结晶动力学被视为加工限制.

研究的目的:

  • 克服PHA无布的局限性,利用其独特的特性进行新型应用.
  • 为了研究聚3-基酸-co-3-hydroxyhexanoate (PHBH) 的可加工性和性能,在化无布中进行.
  • 评估乙三基酸盐 (ATBC) 增塑剂对PHBH和P3HB非织物特性的影响.

主要方法:

  • 包括P3HB和共聚合物PHBH在内的PHAs的吹.
  • 纤维直径分布,机械性能 (延长,抗拉强度) 和尺寸稳定性的表征.
  • 评估压缩弹性,空气透性和疏水性.

主要成果:

  • 通过利用融粘附,PHAs成功地被加工成尺寸和温度稳定的3D无件.
  • 与P3HB相比,PHBH表现出较好的延伸 (5-10%),拉伸强度保持.
  • 将ATBC添加到PHBH增加了延伸到15%,并传递了完全的压缩弹性,与P3HB不同.

结论:

  • 可以利用PHA的独特特性来创建具有增强稳定性和灵活性的先进无材料.
  • 对于需要提高机械性能的无布应用,PHBH为P3HB提供了一个有希望的替代品.
  • 塑化PHBH对于要求弹性和受控透性的应用具有显著的潜力.