相关实验视频

Updated: May 23, 2025

Using Adhesive Patterning to Construct 3D Paper Microfluidic Devices

Using Adhesive Patterning to Construct 3D Paper Microfluidic Devices

Published on: April 1, 2016

在瓶刷压力敏感粘合剂中按需增强粘合力

Tanner C M Wolf¹, Josiah H Marshall¹, Mitchell Maw¹

¹Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States.

ACS macro letters

|May 22, 2025

概括

研究人员通过改变瓶网络架构来开发可切换粘合剂. 紫外线照射可控地降低了交叉链密度,显著提高了先进材料应用的粘合性能.

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
粘附科学粘附科学粘附科学

背景情况:

具有可调节粘度的压力敏感粘合剂 (PSA) 非常受欢迎.
在没有化学添加剂或外部剂的情况下切换粘附仍然是一个挑战.

研究的目的:

通过使用温和的外部刺激来研究修改瓶网络架构的潜力.
为了诱导材料粘弹性和粘附性质的可调节变化.

主要方法:

将o-nitrobenzyl基组纳入poly (n-butanyl acrylate) 刷网的交叉链.
使用紫外线光对交叉连接进行受控的切割,以减少网络交叉连接密度.
对平原模量和Rouse放松时间的变化进行定量分析.

主要成果:

紫外线照射可控制地降低了交叉链密度.
在粘弹性特性中实现了量化可预测的变化.
增强了3个数量级以上的粘附工作,在一系列的剥皮速度.
根据变形速率和交联密度确定了三种不同的粘附模式.

结论:

瓶刷网络架构可以通过紫外线进行可逆调整,以控制粘附.
这种方法为无添加剂的可切换粘合提供了一条途径.
这些发现对设计具有可调节性能的先进粘合剂有意义.

更多相关视频

Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives

Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives

Published on: May 17, 2020

Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization

Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization

Published on: July 3, 2018

相关概念视频

Adhesion

Adhesion

Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...