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相关概念视频

Plasticizers01:31

Plasticizers

413
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
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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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相关实验视频

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Forming Micro-and Nano-Plastics from Agricultural Plastic Films for Employment in Fundamental Research Studies
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用于生产塑化PLA薄膜的新方法:方法,材料和表征.

Gerardo Coppola1, Sebastiano Candamano2, Catia Algieri3

  • 1Department of Computer, Modeling, Electronics and Systems Engineering, University of Calabria Via P. Bucci Cubo 42C Rende 87036 CS Italy sudip.chakraborty@unical.it stefano.curcio@unical.it.

RSC advances
|March 2, 2026
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概括
此摘要是机器生成的。

这项研究引入了一种新方法,用于制造塑化聚乳酸 (PLA) 膜用于包装. 糖醇增强膜的性能,如强度和粘合力,而不会显著改变热特性.

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Procedure for the Transfer of Polymer Films Onto Porous Substrates with Minimized Defects
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科学领域:

  • 聚合物科学 聚合物科学
  • 材料科学 材料科学 材料科学
  • 生物材料工程 生物材料工程

背景情况:

  • 聚乳酸 (PLA) 是一种可生物降解的聚合物,具有食品包装和生物医学用途的潜力.
  • 开发有效的塑化PLA方法对于增强其性能和扩大其应用至关重要.
  • 现有的方法在控制薄膜形态和性能方面可能存在局限性.

研究的目的:

  • 提出一种新的造方法,即空气诱导,温度控制相位分离 (AITCPS),用于生产塑化PLA薄膜.
  • 为了研究糖醇度对PLA膜的物理化学性质的影响.
  • 评估这些薄膜对于食品包装和生物医学应用的适用性.

主要方法:

  • 采用空气诱导,温度控制的相分离 (AITCPS) 进行薄膜制造.
  • 在PLA矩阵中加入不同比例的甘油作为增塑剂.
  • 进行了全面的表征,包括形态,热,机械和界面属性分析.
  • 评估水蒸气传递率和抗菌活动.

主要成果:

  • 通过AITCPS方法成功地生产了高度密度的PLA矩阵.
  • 添加糖对PLA薄膜的热性能影响极小.
  • 在塑化PLA薄膜的机械和界面特性中观察到显著的增强.
  • 此外,还评估了水蒸气传递率和抗微生物活性.

结论:

  • AITCPS方法是生产高质量的塑化PLA薄膜的可行技术.
  • 糖作为一种有效的塑化剂,改善了包装和生物医学应用的关键材料特性.
  • 开发的PLA电影显示了可持续食品包装和先进的生物医学设备的前景.