Issue 31, 2013
From the journal:

RSC Advances

Low surface free energy cyanate ester–silica hybrid (CE–SiO2) nanomaterials for low k dielectric applications†

S. Devaraju,ad   M. R. Vengatesan,ae   M. Selvi,a   A. Ashok Kumar,b   I. Hamerton,c   J. S. God  and  M. Alagar*a  

* Corresponding authors

a Polymer Composites Lab, Department of Chemical Engineering, A.C.Tech, Anna University, Chennai-600 025, India
E-mail: mkalagar@yahoo.com

b Department of Chemistry, A.P.A College of Arts and Culture, Palani–624 601, India

c Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, UK

d Next MEMS lab, School of Mechanical Engineering, Pusan National University, Busan 609-735, South Korea

e School of Electronic & Electrical Engineering, Sungkyunkwan University, Suwon, South Korea

Abstract

The present work addresses the synthesis of 1,4-bis(2-(4-hydroxyphenyl)-2-propyl)benzene based cyanate ester–silica hybrid (CE-SiO2) nanomaterials by an in situ sol–gel method. The nanomaterials are synthesized using a 1,4-bis(2-(4-cyanotophenyl)-2-propyl)benzene [CE] (organic phase) monomer and tetraethoxysilane (TEOS) (inorganic phase) in the presence of various molar ratios of coupling agents [γ-aminopropyltriethoxysilane (APTES) or 3-glycidoxypropyltrimethoxysilane (GPTMS)] through covalent bond interaction. The formation of a covalent bond between the organic and inorganic phases is confirmed by FT-IR. Thermal studies indicate that nanomaterials (CE–SiO2) show a higher Tg and thermal degradation temperature when compared with neat CE. Morphological studies confirm the molecular level dispersion of silica and CE resin. From the contact angle measurement, the hybrid materials are seen to possess better hydrophobicity i.e. the contact angle value increases from 89° and 57° to 108° and 78° for water and diiodomethane as a probe liquid respectively, also surface free energy reduced from 32.8 to 19.00 mJ m−2. These materials are expected to find wide application in the field of microelectronics and optoelectronics.

Graphical abstract: Low surface free energy cyanate ester–silica hybrid (CE–SiO2) nanomaterials for low k dielectric applications

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Article information

DOI
https://doi.org/10.1039/C3RA41144C
Article type
Paper
Submitted
09 Mar 2013
Accepted
24 May 2013
First published
24 May 2013

RSC Adv., 2013,3, 12915-12921

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Low surface free energy cyanate ester–silica hybrid (CE–SiO2) nanomaterials for low k dielectric applications

S. Devaraju, M. R. Vengatesan, M. Selvi, A. A. Kumar, I. Hamerton, J. S. Go and M. Alagar, RSC Adv., 2013, 3, 12915 DOI: 10.1039/C3RA41144C

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