相关实验视频

Updated: Apr 13, 2026

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold

Published on: October 23, 2015

在基于形状记忆效应的等级多孔PLA无布中,可切换表面和目标分子的加载/释放基于形状记忆效应

Lishuo Zhang^1,2, Wenqiang Chai³, Jiaru Zhang²

¹College of Safety Science and Engineering, Liaoning Technical University Huludao 125105 China.

|February 20, 2024

概括

研究人员从聚乳酸 (PLA) 开发了形状记忆型无布,可以快速释放分子. 这些材料在紧和多孔状态之间切换,使药物和催化剂的输送得到控制.

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:

聚乳酸 (PLA) 是一种可生物降解的聚合物,具有药物输送潜力.
开发具有可控制释放能力的智能材料对于先进的应用至关重要.

研究的目的:

为了创建具有形状记忆特性的层次性多孔聚乳酸 (PLA) 非织造材料.
根据其结构变化,研究PLA无布中受控释放的分子.

主要方法:

聚氨酸和聚乙烯氧化物 (PEO) 混合溶液的电.
水蚀刻以创建层次化的孔隙.
循环热压和热水浴处理,以诱导形状记忆效应和控制孔隙性.

主要成果:

呈现形状记忆效应的层次性多孔PLA无布已成功准备.
在紧 (关闭状态) 和多孔 (开放状态) 表面之间实现了可逆切换.
孔隙结构促进了分子的快速释放,证明了受控输送的潜力.

结论:

开发的PLA无布为温度控制,快速释放的应用提供了一个有前途的平台.
这项技术可以应用于催化剂输送和药物释放等领域.

更多相关视频

Preparation of Thermoresponsive Nanostructured Surfaces for Tissue Engineering

Preparation of Thermoresponsive Nanostructured Surfaces for Tissue Engineering

Published on: March 1, 2016

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

Published on: April 16, 2018

相关概念视频

Plastic Behavior

Plastic Behavior

A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...