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Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

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 polymer...
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Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...

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The Synthesis of RGD-functionalized Hydrogels as a Tool for Therapeutic Applications
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探索改性纤维素衍生的水凝的新型应用.

Feiyang Wang1, Aldo Borjas1,2, Aldrin Bonto3

  • 1Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France.

Polymers
|February 24, 2024
PubMed
概括

研究人员使用TEMPO氧化方法从小麦和微纤维素中开发了新的,低成本的水凝. 这些可持续的生物质衍生聚合物显示出出色的可打印和可注射性,为3D打印应用铺平了道路.

关键词:
在TEMPO氧化过程中.这是一种水凝.微纤维素素的微纤维素.可以打印的可用性.风湿学 风湿学 风湿学 风湿学小麦草 小麦草

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科学领域:

  • 生物质价值化 生物质价值化
  • 聚合物化学 聚合物化学
  • 材料科学 是一种材料科学.

背景情况:

  • 红细胞生物质副产品在全球范围内过度生产,这带来了经济和生态挑战.
  • 从这些副产品中开发可持续材料对于循环经济至关重要.
  • 水凝为各种应用提供了多功能性质.

研究的目的:

  • 通过TEMPO氧化,从小麦和微纤维素制造新的基.
  • 评估这些生物质衍生水凝的性能和潜在应用.
  • 为了证明基纤维素的副产品转化为有价值的聚合物.

主要方法:

  • 小麦和微纤维素的TEMPO氧化.
  • 福里埃变换红外光谱 (FTIR) 用于碳基组检测.
  • 用导电度计进行中和定位.
  • 用于粘度测量的风湿学分析.
  • 使用光谱光度计进行传导分析.

主要成果:

  • 通过TEMPO氧化成功合成了两种新的水凝.
  • 从小麦中提取的水凝表现出了特殊的可打印性和可注射性.
  • 微纤维素的氧化度为56-69%,小麦的氧化度为56-63%.
  • 氧化小麦与化的快速交叉连接 (400秒).
  • 在小麦水凝中,粘度超过了10万Pa·s.

结论:

  • 从改造的小麦和微纤维素成功制造出低成本,可持续的水凝.
  • 这些水凝代表了对纤维素生物质副产品的可行价值化途径.
  • 该研究证实了生物质衍生材料在3D打印应用中的潜力.