Preparation and characterization of nanostructured TiO2/epoxy polymeric films

Marco Sangermano; Giulio Matucelli; Ezio Amerio; Roberta Bongiovanni; Aldo Priola; Anna Di Gianni; Brigitte Voit; Giancarlo Rizza

doi:10.1002/mame.200500420

Preparation and characterization of nanostructured TiO₂/epoxy polymeric films

Marco Sangermano
, Giulio Matucelli
, Ezio Amerio
, Roberta Bongiovanni
, Aldo Priola
, Anna Di Gianni
, Brigitte Voit
, Giancarlo Rizza

Politecnico di Torino
Leibniz-Institut für Polymerforschung Dresden e.V.

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

68 Citations (Scopus)

Abstract

Titania-containing coatings were prepared by cationic photopolymerization of an epoxy resin either by dispersion of preformed TiO₂ nanoparticles or by their in-situ generation through a sol-gel dual-cure process. The kinetics of photopolymerization was evaluated by real-time FT-IR, studying the effect of the TiO₂ concentration. The properties of cured films were investigated, showing an increase of hydrophilicity on the surface of the coatings with increasing TiO₂ content. TEM analysis demonstrated that it is possible to achieve a significantly better control of the dispersion of the inorganic particles within the organic matrix by in-situ generation of TiO₂, thus completely avoiding macroscopic phase separation and obtaining homogeneous, transparent coatings.

Original language	English
Pages (from-to)	517-523
Number of pages	7
Journal	Macromolecular Materials and Engineering
Volume	291
Issue number	5
DOIs	https://doi.org/10.1002/mame.200500420
Publication status	Published - 23 May 2006

Keywords

Cationic photopolymerization
Dual-cure
Sol-gel process
Surfaces
Titania nanoparticles

Access to Document

10.1002/mame.200500420

Cite this

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title = "Preparation and characterization of nanostructured TiO2/epoxy polymeric films",

abstract = "Titania-containing coatings were prepared by cationic photopolymerization of an epoxy resin either by dispersion of preformed TiO2 nanoparticles or by their in-situ generation through a sol-gel dual-cure process. The kinetics of photopolymerization was evaluated by real-time FT-IR, studying the effect of the TiO2 concentration. The properties of cured films were investigated, showing an increase of hydrophilicity on the surface of the coatings with increasing TiO2 content. TEM analysis demonstrated that it is possible to achieve a significantly better control of the dispersion of the inorganic particles within the organic matrix by in-situ generation of TiO2, thus completely avoiding macroscopic phase separation and obtaining homogeneous, transparent coatings.",

keywords = "Cationic photopolymerization, Dual-cure, Sol-gel process, Surfaces, Titania nanoparticles",

author = "Marco Sangermano and Giulio Matucelli and Ezio Amerio and Roberta Bongiovanni and Aldo Priola and \{Di Gianni\}, Anna and Brigitte Voit and Giancarlo Rizza",

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T1 - Preparation and characterization of nanostructured TiO2/epoxy polymeric films

AU - Sangermano, Marco

AU - Matucelli, Giulio

AU - Amerio, Ezio

AU - Bongiovanni, Roberta

AU - Priola, Aldo

AU - Di Gianni, Anna

AU - Voit, Brigitte

AU - Rizza, Giancarlo

PY - 2006/5/23

Y1 - 2006/5/23

N2 - Titania-containing coatings were prepared by cationic photopolymerization of an epoxy resin either by dispersion of preformed TiO2 nanoparticles or by their in-situ generation through a sol-gel dual-cure process. The kinetics of photopolymerization was evaluated by real-time FT-IR, studying the effect of the TiO2 concentration. The properties of cured films were investigated, showing an increase of hydrophilicity on the surface of the coatings with increasing TiO2 content. TEM analysis demonstrated that it is possible to achieve a significantly better control of the dispersion of the inorganic particles within the organic matrix by in-situ generation of TiO2, thus completely avoiding macroscopic phase separation and obtaining homogeneous, transparent coatings.

AB - Titania-containing coatings were prepared by cationic photopolymerization of an epoxy resin either by dispersion of preformed TiO2 nanoparticles or by their in-situ generation through a sol-gel dual-cure process. The kinetics of photopolymerization was evaluated by real-time FT-IR, studying the effect of the TiO2 concentration. The properties of cured films were investigated, showing an increase of hydrophilicity on the surface of the coatings with increasing TiO2 content. TEM analysis demonstrated that it is possible to achieve a significantly better control of the dispersion of the inorganic particles within the organic matrix by in-situ generation of TiO2, thus completely avoiding macroscopic phase separation and obtaining homogeneous, transparent coatings.

KW - Cationic photopolymerization

KW - Dual-cure

KW - Sol-gel process

KW - Surfaces

KW - Titania nanoparticles

U2 - 10.1002/mame.200500420

DO - 10.1002/mame.200500420

M3 - Article

AN - SCOPUS:33744825216

SN - 1438-7492

VL - 291

SP - 517

EP - 523

JO - Macromolecular Materials and Engineering

JF - Macromolecular Materials and Engineering

IS - 5