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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 polymer...
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Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
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碳点与酸盐粉协同,用于构建高性能智能包装膜的双导电路径.

Xiaoxu Zhang1, Chengguo Liu1,2, Xiaoqin Yang1

  • 1National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming 650224, China.

Materials (Basel, Switzerland)
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概括

这项研究引入了一种由酸粉 (PS) 和碳点 (CD) 制成的新型智能传感膜. 可持续材料增强了智能包装,提高了导电性和pH传感能力.

关键词:
碳点是指碳点的部分.埃拉基酸是一种酸.酸粉酸粉的含量是多少智能包装是一种智能包装.基于粉的电影

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科学领域:

  • 材料科学 材料科学 材料科学
  • 聚合物化学 聚合物化学
  • 纳米技术 纳米技术

背景情况:

  • 智能包装需要高性能,可持续的传感材料.
  • 粉是一种可生物降解的聚合物,由于其高晶度,电荷传输有限.
  • 开发先进的基于粉的材料对于可持续技术至关重要.

研究的目的:

  • 开发一种使用酸粉 (PS) 和碳点 (CD) 的新型智能传感膜.
  • 研究和CD对薄膜特性和传感性能的协同作用.
  • 为智能包装应用创造可持续材料.

主要方法:

  • 在酸粉 (PS) 中加入来自酸的蓝色光碳点 (CDs).
  • 系统地研究银离子 (Ag+),碳素甲基纤维素 (CMC) 和CDS对薄膜性能的影响.
  • 电阻的特征,拉力强度,破裂时的延长,热稳定性和pH值依赖的反应.

主要成果:

  • 磁盘作为纳米交叉连接器,提高薄膜强度 (5.1 MPa) 和性 (24.1%的延长).
  • 和CD之间的协同作用创造了双离子/电子导电路径,减少了84%的电阻.
  • PS/CD的膜显示了对pH的线性电流响应 (R2 = 0.9450) 和坏的汁的增强区分.
  • 这部电影显示了pH值依赖的蓝色光 (427nm).

结论:

  • 和CD协同增强基于粉的薄膜的电导率和传感性能.
  • 开发的复合膜为高性能智能包装提供了一个有希望的可持续材料.
  • 这项研究提供了一个新的策略,用于创建基于粉的先进传感材料.