相关实验视频

Updated: Jun 30, 2025

Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications

Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications

Published on: August 28, 2015

用化酸加载的聚乙烯纤维的结构和特性,通过融制成的聚乙烯纤维

Dongzheng Yu¹, Zeping Duan¹, Aming Wang¹

¹Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China.

International journal of biological macromolecules

|March 14, 2024

概括

聚酸/酸 (PLA/CGA) 混合物成功制造成纤维. 这些新的PLA/CGA纤维具有增强的紫外线抵抗性,抗氧化特性和受控释放,使它们适用于先进的应用.

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
生物材料是一种生物材料.

背景情况:

聚酸 (PLA) 是一种可生物降解的聚合物,在各种领域都有潜在的应用.
包括诸如酸 (CGA) 这样的天然化合物可以增强PLA的特性.
开发基于PLA的功能性材料需要了解混合物特性和加工方法.

研究的目的:

研究聚酸/酸 (PLA/CGA) 混合物和纤维的制备和性能.
评估CGA结合对PLA物理,机械和功能特性的影响.
探索PLA/CGA纤维在需要抗紫外线,抗氧化活性和控制释放的应用中的潜力.

主要方法:

酸/CGA混合物是使用不同重量比例的融混合来制备的.
PLA/CGA纤维是通过两步融工艺生产的.
特性包括混合物形态,分子间相互作用,粘度,结晶性,抗拉强度,紫外线透射率,抗氧化活性和CGA释放的分析.

主要成果:

在PLA矩阵内,CGA分布均,存在分子间相互作用.
随着CGA含量的增加,PLA/CGA混合物的粘度和结晶性下降.
PLA/CGA纤维显示出增强的紫外抗性 (UV透射率<8%与≥3%的CGA) 和抗氧化特性 (>90%的抗氧化率与10%的CGA).
最高的抗拉强度 (420MPa) 是通过使用3%CGA的6倍拉拉PLA/CGA纤维获得的.
10%的CGA在6倍拉拉纤维中显示,7天的累计CGA释放率为19%.

结论:

融混合和融是生产PLA/CGA混合物和纤维的有效方法.
加入CGA显著提高了PLA纤维的抗紫外线和抗氧化能力.
PLA/CGA纤维具有可调节的机械性能和可控制释放的能力.
这些功能化的PLA/CGA纤维对包装,生物医疗设备和织品的应用具有前景.

关键词:

抗氧化作用抗氧化作用基酸 (CGA) 是一种聚乳酸 (PLA) 是一种聚乳酸.

更多相关视频

Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer

Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer

Published on: November 30, 2020

Facile and Efficient Preparation of Tri-component Fluorescent Glycopolymers via RAFT-controlled Polymerization

Facile and Efficient Preparation of Tri-component Fluorescent Glycopolymers via RAFT-controlled Polymerization

Published on: June 19, 2015

相关概念视频

Polymer Classification: Stereospecificity

Polymer Classification: Stereospecificity

Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...

Polymer Classification: Architecture

Polymer Classification: Architecture

Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...

Polymer Classification: Crystallinity

Polymer Classification: Crystallinity

Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...