Facile hydrophobicity/hydrophilicity modification of SMP surface based on metal constrained cracking

Yu Han; Peng Li; Liangyu Zhao; Wenxin Wang; Jinsong Leng; Peng Jin

doi:10.1117/12.2084494

1 April 2015 Facile hydrophobicity/hydrophilicity modification of SMP surface based on metal constrained cracking

Yu Han, Peng Li, Liangyu Zhao, Wenxin Wang, Jinsong Leng, Peng Jin

Proceedings Volume 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015; 94302Q (2015) https://doi.org/10.1117/12.2084494
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

This study demonstrates an easy way to change surface characteristics, the water contact angle on styrene based shape memory polymer (SMP) surface alters before and after cracking formation and recovery. The contact angle of water on the original SMP surface is about 85 degree, after coating with Al and then kneading from side face at glass transition temperature T_g, cracking appeared both on Al film and SMP; cooling down and removing the Al film, cracks remain on SMP surface while the contact angle reduced to about 25 degree. When reheated above T_g, the cracks disappeared, and the contact angle go back to about 85 degree. The thin Al film bonded on SMP surface was coated by spurting, that constrains the deformation of SMP. Heating above T_g, there are complex interactions between soft SMP and hard metal film under kneading. The thin metal film cracked first with the considerable deformation of soft polymer, whereafter, the polymer was ripped by the metal cracks thus polymer cracked as well. Cracks on SMP can be fixed cooling down T_g, while reheated, cracks shrinking and the SMP recovers to its original smooth surface. Surface topography changed dramatically while chemical composition showed no change during the deformation and recovery cycle, as presented by SEM and EDS. Furthermore, the wetting cycle is repeatable. This facile method can be easily extended to the hydropobicity/hydrophilicity modification of other stimuli-responsive polymers and put forward many potential applications, such as microfluidic switching and molecule capture and release.

Citation Download Citation

Yu Han, Peng Li, Liangyu Zhao, Wenxin Wang, Jinsong Leng, and Peng Jin "Facile hydrophobicity/hydrophilicity modification of SMP surface based on metal constrained cracking", Proc. SPIE 9430, Electroactive Polymer Actuators and Devices (EAPAD) 2015, 94302Q (1 April 2015); https://doi.org/10.1117/12.2084494

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polymers

Aluminum

Metals

Polymer thin films

Coating

Scanning electron microscopy

Chemical elements

Show All Keywords

Keywords/Phrases

Search In:

Publication Years