BROWSE

Related Scientist

CMCM's photo.

CMCM
다차원 탄소재료 연구단
more info

ITEM VIEW & DOWNLOAD

Local Wear of Catechol-Containing Diblock Copolymer Layers: Wear Volume, Stick-Slip, and Nanomechanical Changes

Cited 0 time in webofscience Cited 0 time in scopus
13 Viewed 0 Downloaded
Title
Local Wear of Catechol-Containing Diblock Copolymer Layers: Wear Volume, Stick-Slip, and Nanomechanical Changes
Author(s)
Dobryden, Illia; Steponavičiū Tė, Medeina; Daniel Hedman; Klimkevičius, Vaidas; Makuška, Ričardas; Dėdinaitė, Andra; Liu, Xiaoyan; Corkery, Robert W.; Claesson, Per Martin
Publication Date
2021-09-30
Journal
Journal of Physical Chemistry C, v.125, no.38, pp.21277 - 21292
Publisher
American Chemical Society
Abstract
© 2021 The Authors. Published by American Chemical Society.Polymers containing catechol groups have gained a large interest, as they mimic an essential feature of mussel adhesive proteins that allow strong binding to a large variety of surfaces under water. This feature has made this class of polymers interesting for surface modification purposes, as layer functionalities can be introduced by a simple adsorption process, where the catechol groups should provide a strong anchoring to the surface. In this work, we utilize an AFM-based method to evaluate the wear resistance of such polymer layers in water and compare it with that offered by electrostatically driven adsorption. We pay particular attention to two block copolymer systems where the anchoring group in one case is an uncharged catechol-containing block and in the other case a positively charged and catechol-containing block. The wear resistance is evaluated in terms of wear volume, and here, we compare with data for similar copolymers with statistical distribution of the catechol groups. Monitoring of nanomechanical properties provides an alternative way of illustrating the effect of wear, and we use modeling to show that the stiffness, as probed by an AFM tip, of the soft layer residing on a hard substrate increases as the thickness of the layer decreases. The stick-slip characteristics are also evaluated.
URI
https://pr.ibs.re.kr/handle/8788114/10643
DOI
10.1021/acs.jpcc.1c06859
ISSN
1932-7447
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse