相关实验视频
Updated: Jul 31, 2026

10:53
Shape Memory Polymers for Active Cell Culture
Published on: July 4, 2011
13.5K
通过形状记忆增强的多乙醇/多烯酸-多二-多烯酸混合物的自我愈合
Yajun Ren1,2, Xiaofeng Song1, Youhua Chen1
1School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China.
Langmuir : the ACS journal of surfaces and colloids
|October 4, 2023
概括
这项研究引入了与聚乙烯醇 (PVA) 混合的新型自我修复聚合物. 这些智能材料利用形状内存进行增强的自主修复,显示生物医学应用的前景.
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
- 生物材料是一种生物材料.
背景情况:
- 自愈聚合物提供自主修复能力,延长材料寿命并降低成本.
- 整合形状记忆效应与自我修复是智能材料中未被探索的领域.
研究的目的:
- 为了合成和表征新型的多-多-多-多酸 (PAA-PTMG-PAA) 聚合物.
- 研究这些聚合物与聚乙烯醇 (PVA) 的混合,以提高自我愈合和形状记忆性能.
- 评估这些材料在生物医学应用中的潜力.
主要方法:
- 合成PAA-PTMG-PAA聚合物的合成.
- 在特定比例下将合成聚合物与PVA混合.
- 描述水的膨胀,结晶,形状记忆效应和自我愈合行为.
- 拉伸强度的评估,破裂时的延长和细胞毒性.
主要成果:
- 在潮湿条件下达到高水膨胀率 (高达400.0%) 和显著的结晶变化.
- 证明了对热水反应的形状记忆效应和有利的自我愈合能力.
- 经过治愈的膜的抗拉强度为12.4MPa,在25°C时破裂时的延长率为320.0%.
- 在37°C时增强形状记忆的自我愈合,在断裂时延长率增加到515.9%.
结论:
- 包括PAA-PTMG-PAA在内的开发的PVA混合物表现出有效的自我愈合和形状记忆特性.
- 形状记忆辅助显著提高了自我愈合的效率,特别是在体温 (37°C).
- 该材料的非细胞毒性表明其作为有前途的生物医学材料的潜力.
相关概念视频
Anionic Chain-Growth Polymerization: Overview
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
Step-Growth Polymerization: Overview
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Many natural and synthetic polymers are produced by...
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...
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...

