Durable bonding of silica nanoparticles to polymers by photoradiation for control of surface properties

T. Nahum; H. Dodiuk; A. Dotan; S. Kenig; J. P. Lellouche

doi:10.1002/pat.3276

Durable bonding of silica nanoparticles to polymers by photoradiation for control of surface properties

T. Nahum, H. Dodiuk, A. Dotan, S. Kenig, J. P. Lellouche

Department of Chemistry

Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

Abstract

Improvement of superhydrophobic surfaces durability is a critical key for potential commercial applications such as self-cleaning and ice repellency. In this study, functionalization of silica nanoparticles by photoreactive benzophenone groups was made in order to covalently bond nanoparticles to polymer substrates to obtain durable coatings. Upon ultraviolet irradiation reactive excited triplet benzophenone species are formed enabling them to react with the polymer matrix through hydrogen abstraction. Two matrices were studied: radiation-curable urethane acrylate and epoxy. The bonding of the particles to the surfaces was evaluated using atomic force microscope nanomanipulation and cross-section analysis. The results have shown a greater stability of the photoreactive silica nanoparticles.

Original language	English
Pages (from-to)	723-731
Number of pages	9
Journal	Polymers for Advanced Technologies
Volume	25
Issue number	7
DOIs	https://doi.org/10.1002/pat.3276
State	Published - Jul 2014

Keywords

Functional coatings
Hydrophobic coatings
UV-photoreactive silica nanoparticles

All Science Journal Classification (ASJC) codes

Polymers and Plastics

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10.1002/pat.3276

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title = "Durable bonding of silica nanoparticles to polymers by photoradiation for control of surface properties",

abstract = "Improvement of superhydrophobic surfaces durability is a critical key for potential commercial applications such as self-cleaning and ice repellency. In this study, functionalization of silica nanoparticles by photoreactive benzophenone groups was made in order to covalently bond nanoparticles to polymer substrates to obtain durable coatings. Upon ultraviolet irradiation reactive excited triplet benzophenone species are formed enabling them to react with the polymer matrix through hydrogen abstraction. Two matrices were studied: radiation-curable urethane acrylate and epoxy. The bonding of the particles to the surfaces was evaluated using atomic force microscope nanomanipulation and cross-section analysis. The results have shown a greater stability of the photoreactive silica nanoparticles.",

keywords = "Functional coatings, Hydrophobic coatings, UV-photoreactive silica nanoparticles",

author = "T. Nahum and H. Dodiuk and A. Dotan and S. Kenig and Lellouche, {J. P.}",

year = "2014",

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AU - Nahum, T.

AU - Dodiuk, H.

AU - Dotan, A.

AU - Kenig, S.

AU - Lellouche, J. P.

PY - 2014/7

Y1 - 2014/7

N2 - Improvement of superhydrophobic surfaces durability is a critical key for potential commercial applications such as self-cleaning and ice repellency. In this study, functionalization of silica nanoparticles by photoreactive benzophenone groups was made in order to covalently bond nanoparticles to polymer substrates to obtain durable coatings. Upon ultraviolet irradiation reactive excited triplet benzophenone species are formed enabling them to react with the polymer matrix through hydrogen abstraction. Two matrices were studied: radiation-curable urethane acrylate and epoxy. The bonding of the particles to the surfaces was evaluated using atomic force microscope nanomanipulation and cross-section analysis. The results have shown a greater stability of the photoreactive silica nanoparticles.

AB - Improvement of superhydrophobic surfaces durability is a critical key for potential commercial applications such as self-cleaning and ice repellency. In this study, functionalization of silica nanoparticles by photoreactive benzophenone groups was made in order to covalently bond nanoparticles to polymer substrates to obtain durable coatings. Upon ultraviolet irradiation reactive excited triplet benzophenone species are formed enabling them to react with the polymer matrix through hydrogen abstraction. Two matrices were studied: radiation-curable urethane acrylate and epoxy. The bonding of the particles to the surfaces was evaluated using atomic force microscope nanomanipulation and cross-section analysis. The results have shown a greater stability of the photoreactive silica nanoparticles.

KW - Functional coatings

KW - Hydrophobic coatings

KW - UV-photoreactive silica nanoparticles

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DO - 10.1002/pat.3276

M3 - مقالة

SN - 1042-7147

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JO - Polymers for Advanced Technologies

JF - Polymers for Advanced Technologies

IS - 7

ER -

Durable bonding of silica nanoparticles to polymers by photoradiation for control of surface properties

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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