Stiffening of polydimethylsiloxane surface as result of exposure to low-pressure argon discharge plasma

被引：1

作者：

Tifui, Garbiela ^{[1
]}

Dobromir, Marius ^{[2
]}

Sirghi, Lucel ^{[1
,3
]}

机构：

[1] Alexandru Ioan Cuza Univ, Fac Phys, Iasi Plasma Adv Res Ctr IPARC, Iasi, Romania

[2] Alexandru Ioan Cuza Univ, Inst Interdisciplinary Res, Dept Exact Sci & Nat Sci, Iasi, Romania

[3] Alexandru Ioan Cuza Univ, Fac Phys, Iasi Plasma Adv Res Ctr IPARC, Blvd Carol I 11, Iasi 700506, Romania

来源：

PLASMA PROCESSES AND POLYMERS | 2023年 / 20卷 / 08期

关键词：

adhesion work; nanoindentation; plasma treatment; polydimethylsiloxane; Young modulus; MECHANICAL-PROPERTIES; ENERGY; PDMS; HYDROPHILICITY; ADHESION;

D O I：

10.1002/ppap.202300014

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Polydimethylsiloxane (PDMS) surface has been exposed to negative glow discharge plasma of a low-pressure discharge in pure argon for a duration varying from 10 s to 2 min. Shallow atomic force microscopy indentation experiments were performed to investigate the effect of plasma treatment on PDMS surface stiffness and adhesion energy to the silicon nitride indenter surface. The results showed an important increase in Young's modulus and a slight increase of work of adhesion. X-ray photoelectron spectroscopy investigation of plasma-treated PDMS surface showed a decrease of atomic content of carbon accompanied by an increase of oxygen content and suggests that the stiffening of PDMS surface can be attributed to generation of new cross-linking Si-O-Si and Si-CH2-CH2-Si bonds between PDMS molecules.

引用

页数：11

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