Adhesive-free adhesion between heat-assisted plasma-treated fluoropolymers (PTFE, PFA) and plasma-jet-treated polydimethylsiloxane (PDMS) and its application

Ohkubo, Yuji; Endo, Katsuyoshi; Yamamura, Kazuya

Scientific Reports, 2018, 8, 18058

Number of Access:744（2025-08-21 00:35 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84524

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Title
Adhesive-free adhesion between heat-assisted plasma-treated fluoropolymers (PTFE, PFA) and plasma-jet-treated polydimethylsiloxane (PDMS) and its application
Creator
NRID
1000010525786 1000010525786
ORCID
0000-0001-7366-5108 0000-0001-7366-5108
researchmap permalink
okb okb
Scopus Author ID
37461879400 37461879400
CreatorName
Ohkubo, Yuji
NRID
1000090152008 1000090152008
researchmap permalink
endo5352 endo5352
Scopus Author ID
7402712908 7402712908
CreatorName
Endo, Katsuyoshi
NRID
1000060240074 1000060240074
researchmap permalink
read0014013 read0014013
Scopus Author ID
7201754767 7201754767
CreatorName
Yamamura, Kazuya
Description
Ohkubo Y., Endo K., Yamamura K. "Adhesive-free adhesion between heat-assisted plasma-treated fluoropolymers (PTFE, PFA) and plasma-jet-treated polydimethylsiloxane (PDMS) and its application", Scientific Reports, 8(1), 18058, 2018. https://doi.org/10.1038/s41598-018-36469-y.
Abstract
Conventional low-temperature plasma treatment was reported to minimally improve the adhesion property of polytetrafluoroethylene (PTFE), whereas heat-assisted plasma (HAP) treatment significantly improved the same. An unvulcanized rubber was previously used as an adherent for PTFE. This study aimed to achieve strong adhesive-free adhesion between PTFE and vulcanized polydimethylsiloxane (PDMS) rubber. As-received vulcanized PDMS rubber did not adhere to HAP-treated PTFE, and as-received PTFE did not adhere to vulcanized rubber of plasma-jet (PJ) treated PDMS rubber; however, HAP-treated PTFE strongly adhered to vulcanized PJ-treated PDMS rubber, and both PTFE and PDMS exhibited cohesion failure in the T-peel test. The surface chemical compositions of the PTFE and PDMS sides were determined using X-ray photoelectron spectroscopy. The strong PTFE/PDMS adhesion was explained via hydrogen and covalent bond formation (C–O–Si and/or C(=O)–O–Si) between hydroxyl (C–OH) or carboxyl (C(=O)–OH) groups of the HAP-treated PTFE. This process was also applied to adhesive-free adhesion between a tetrafluoroethylene–perfluoroalkylvinylether copolymer (PFA) and PDMS; subsequently, a translucent PFA/PDMS assembly with strong adhesion was realized together with the PTFE/PDMS assembly. Strong adhesive-free adhesion between fluoropolymers (PTFE, PFA) and vulcanized PDMS rubber without using any adhesives and graft polymer was successfully realized upon plasma treatment of both the fluoropolymer and PDMS sides. Additionally, a PDMS sheet, which was PJ-treated on both sides, was applied to strongly adhere fluoropolymers (PTFE, PFA) to materials such as metal and glass. PJ-treated PDMS was used as an intermediate layer rather than a strong adhesive, achieving PTFE/PDMS/metal and PTFE/PDMS/glass assemblies. The PTFE/PDMS, PDMS/metal, and PDMS/glass adhesion strengths exceeded 2 N/mm.
Publisher
Nature Publishing Group
Source Title
Scientific Reports
Volume (Issue)
8
Page
18058
Date of Issued
2018-12-01
Language
English
Handle URL
https://hdl.handle.net/11094/84524
eISSN
20452322
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1038/s41598-018-36469-y
PMID
30584251
Access Rights
open access
CopyRight
© 2018 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License.
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Version of Record
Category
学術雑誌論文 Journal Article