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Issue 109, 2016, Issue in Progress
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Direct bonding of liquid crystal polymer to glass

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In this paper, a direct bonding technology for liquid crystal polymer (LCP) and glass is developed for the first time by using sequential plasma-activated bonding which is based on physical sputtering followed by the formation of chemically reactive surfaces. The sequential-plasma-activated surfaces of glass and LCP show high hydrophilicity with moderate roughness. The adhesion between the activated LCP and glass surfaces is governed by hydroxyl group-mediated interfacial Si–OH–C covalent bonds. The post-bonding anodic treatment increases the amount of interfacial oxides by generating more singly-bonded oxides on the glass surface. The post-bonding thermal treatment rearranges the plasma-induced reactive sites and improves the conformal contact between the LCP and glass. A high bonding strength of 6.3 MPa is obtained between the LCP and glass when both anodic and thermal treatments are used. This simple and low-temperature direct bonding process for LCP and glass provides insights for future bonding between polymers and thin glass films.

Graphical abstract: Direct bonding of liquid crystal polymer to glass

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Article information

11 Jul 2016
04 Nov 2016
First published
04 Nov 2016

RSC Adv., 2016,6, 107200-107207
Article type

Direct bonding of liquid crystal polymer to glass

A. U. Alam, Y. Qin, Matiar M. R. Howlader and M. J. Deen, RSC Adv., 2016, 6, 107200
DOI: 10.1039/C6RA17729H

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