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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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可再生光交联聚基生物材料:合成,表征和细胞相容性评估

Teresa Cernadas1,2, João Pereira1, Bruna L Melo3,4

  • 1Department of Chemical Engineering, University of Coimbra, CERES, Coimbra 3030-790, Portugal.

Biomacromolecules
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概括
此摘要是机器生成的。

这项研究开发了从可再生资源中获得的新型光交叉链接不和聚烯 (UP). 这些可生物降解和细胞相容的生物材料显示出各种应用的前景.

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科学领域:

  • 聚合物化学 聚合物化学
  • 生物材料科学 生物材料科学
  • 可持续材料 可持续材料

背景情况:

  • 开发可持续和功能性聚合物对于减少对石化产品的依赖至关重要.
  • 生物基单体为聚合物合成提供了一个可再生的替代品.
  • 对于受控的制造和应用而言,可进行光交叉链接的材料是可取的.

研究的目的:

  • 从生物基伊塔康酸和1,4-butanediol中合成和表征光交叉链接的不和聚合物 (UP).
  • 研究合成和交联参数对材料性能的影响.
  • 评估这些UP的潜力作为生物材料.

主要方法:

  • 使用生物基单体合成不和聚 (UPs).
  • 包括热分析和机械测试在内的UP的表征.
  • 通过紫外线照射对UP进行光交叉链接.
  • 在体中用酸盐缓冲盐水 (PBS) 进行水解降解研究.
  • 使用人类皮肤纤维细胞的细胞相容性评估.

主要成果:

  • 经过紫外线照射,获得了均,透明的薄膜.
  • 实现了高凝含量,受反应温度的影响.
  • 材料表现出类似的热行为.
  • 在体外降解证实了PBS在37°C的生物降解性.
  • 证明了与人类皮肤纤维细胞的积极细胞相容性.

结论:

  • 生物基不和聚烯可以有效合成和光交叉链接.
  • 开发的材料表现出生物材料应用的理想特性,包括生物降解性和细胞相容性.
  • 这项工作有助于从可再生资源开发可持续的聚合物.