基于PVP共聚物的水凝的结构特征和机械特性,在溶剂的存在下获得
Oleksandr Grytsenko1, Petro Pukach2, Myroslava Vovk2
1Institute of Chemistry and Chemical Technologies, Lviv Polytechnic National University, 12 St. Bandera Str., 79013 Lviv, Ukraine.
Gels (Basel, Switzerland)
|December 24, 2025
概括
在2-乙基甲酸盐 (HEMA) 和聚乙烯 (PVP) 的共聚合过程中控制溶剂的类型和数量,可以调整水凝的特性. 这使得水凝结构和机械特性可以针对各种应用进行有针对性的调节.
科学领域:
- 聚合物化学 聚合物化学
- 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:
- 基于2-乙基甲酸盐 (HEMA) 和聚烯 (PVP) 的水凝是多功能材料.
- 了解合成条件对水凝性质的影响对于其应用至关重要.
研究的目的:
- 研究溶剂量和性质对pHEMA-gr-PVP水凝的结构和机械性能的影响.
- 建立针对水凝特性有针对性的调节方法.
主要方法:
- 在金属离子的存在下通过共聚合合成pHEMA-gr-PVP共聚合物.
- 使用的溶剂:水,DMSO,DEG 和 HOCy.
- 通过接种效率,PVP含量和交叉链接之间的分子量 (MC) 评估共聚合物结构.
主要成果:
- 溶剂度的增加 (在水中多达50个质量部分) 提高了PVP接种效率,因为大分子的移动性增加了.
- 溶剂的性质显著影响了交联密度,MC在H2系列中增加了O,DEG,DMSO,HOCy.
- 更高的MC与降低水凝硬度和弹性相关,并增加水和胀.
结论:
- 聚合条件,特别是溶剂类型和度,可以精确控制pHEMA-gr-PVP水凝的结构和特性.
- 这项研究展示了通过操纵溶剂参数来为特定应用量身定制水凝特性的一种途径.
关键词:
2-基乙基甲基酸盐的二氧化乙基甲基酸盐.合作聚合的共聚合.交联聚合物交联聚合物接种共聚合物的移植共聚合物.这是一种水凝.机械性能 机械性能 机械性能聚合物网是一种聚合物网络.聚维尼尔皮罗利多的使用.溶剂溶剂的使用方法更多相关视频
08:59A Freeze-Thawing Method to Prepare Chitosan-Polyvinyl alcohol Hydrogels Without Crosslinking Agents and Diflunisal Release Studies
Published on: January 14, 2020
18.8K
09:39Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
Published on: February 7, 2021
8.7K
相关概念视频
01:24Characteristics and Nomenclature of Copolymers
2.7K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
2.7K
01:28Classification and Mechanical Properties of Synthetic Polymers
22
Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...
22