Influence of the polymer molecular weight on the microstructure of hybrid materials prepared by gamma-irradiation

Joana J. H. Lancastre; Antonio N. Falcao; Femanda M. A. Margaca; Luis M. Ferreira; Isabel M. Miranda Salvado; Maria H. Casimiro; Laszlo Almasy; Aniko Meiszterics

doi:10.1016/j.radphyschem.2014.06.023

Influence of the polymer molecular weight on the microstructure of hybrid materials prepared by gamma-irradiation

Joana J. H. Lancastre, Antonio N. Falcao, Femanda M. A. Margaca, Luis M. Ferreira, Isabel M. Miranda Salvado, Maria H. Casimiro, Laszlo Almasy, Aniko Meiszterics

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

7 Citations (Scopus)

Abstract

Hybrid materials have been the object of intense research due to their potential for biomedical applications as well as in other fields. They are usually prepared by sol-gol but the method of gamma irradiation of the precursors is an alternative avoiding the addition of any other chemicals. The study of the hybrids prepared by this method has been progressing to understand the impact of different variables on the microstructure. In this work, the influence of the polymer's molecular weight on the microstructure of the materials is investigated. Hybrids were obtained from a mixture of polydimethylsiloxane (PDMS) silanol terminated, tetraethylorthosilicate (TEOS) and zirconium propoxide (PrZr) in the wt% composition 20PDMS-73TEOS-7PrZr varying only the PDMS molecular weight. The obtained materials are homogeneous, transparent and flexible and their microstructure was analysed by Scanning Electron Microscopy (SEM) and Small-Angle Neutron Scattering (SANS). It was found that different microstructures were obtained, depending on the polymer molecular weight. (C) 2014 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	126-129
Number of pages	4
Journal	Radiation Physics and Chemistry
Volume	106
DOIs	https://doi.org/10.1016/j.radphyschem.2014.06.023
Publication status	Published - Jan 2015

Keywords

Hybrid materials
Gamma irradiation
Microstructure
Molecular weight

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10.1016/j.radphyschem.2014.06.023

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title = "Influence of the polymer molecular weight on the microstructure of hybrid materials prepared by gamma-irradiation",

abstract = "Hybrid materials have been the object of intense research due to their potential for biomedical applications as well as in other fields. They are usually prepared by sol-gol but the method of gamma irradiation of the precursors is an alternative avoiding the addition of any other chemicals. The study of the hybrids prepared by this method has been progressing to understand the impact of different variables on the microstructure. In this work, the influence of the polymer's molecular weight on the microstructure of the materials is investigated. Hybrids were obtained from a mixture of polydimethylsiloxane (PDMS) silanol terminated, tetraethylorthosilicate (TEOS) and zirconium propoxide (PrZr) in the wt% composition 20PDMS-73TEOS-7PrZr varying only the PDMS molecular weight. The obtained materials are homogeneous, transparent and flexible and their microstructure was analysed by Scanning Electron Microscopy (SEM) and Small-Angle Neutron Scattering (SANS). It was found that different microstructures were obtained, depending on the polymer molecular weight. (C) 2014 Elsevier Ltd. All rights reserved.",

keywords = "Hybrid materials, Gamma irradiation, Microstructure, Molecular weight",

author = "Lancastre, {Joana J. H.} and Falcao, {Antonio N.} and Margaca, {Femanda M. A.} and Ferreira, {Luis M.} and {Miranda Salvado}, {Isabel M.} and Casimiro, {Maria H.} and Laszlo Almasy and Aniko Meiszterics",

year = "2015",

month = jan,

doi = "10.1016/j.radphyschem.2014.06.023",

language = "English",

volume = "106",

pages = "126--129",

journal = "Radiation Physics and Chemistry",

issn = "0969-806X",

publisher = "PERGAMON-ELSEVIER SCIENCE LTD",

}

TY - JOUR

T1 - Influence of the polymer molecular weight on the microstructure of hybrid materials prepared by gamma-irradiation

AU - Lancastre, Joana J. H.

AU - Falcao, Antonio N.

AU - Margaca, Femanda M. A.

AU - Ferreira, Luis M.

AU - Miranda Salvado, Isabel M.

AU - Casimiro, Maria H.

AU - Almasy, Laszlo

AU - Meiszterics, Aniko

PY - 2015/1

Y1 - 2015/1

N2 - Hybrid materials have been the object of intense research due to their potential for biomedical applications as well as in other fields. They are usually prepared by sol-gol but the method of gamma irradiation of the precursors is an alternative avoiding the addition of any other chemicals. The study of the hybrids prepared by this method has been progressing to understand the impact of different variables on the microstructure. In this work, the influence of the polymer's molecular weight on the microstructure of the materials is investigated. Hybrids were obtained from a mixture of polydimethylsiloxane (PDMS) silanol terminated, tetraethylorthosilicate (TEOS) and zirconium propoxide (PrZr) in the wt% composition 20PDMS-73TEOS-7PrZr varying only the PDMS molecular weight. The obtained materials are homogeneous, transparent and flexible and their microstructure was analysed by Scanning Electron Microscopy (SEM) and Small-Angle Neutron Scattering (SANS). It was found that different microstructures were obtained, depending on the polymer molecular weight. (C) 2014 Elsevier Ltd. All rights reserved.

AB - Hybrid materials have been the object of intense research due to their potential for biomedical applications as well as in other fields. They are usually prepared by sol-gol but the method of gamma irradiation of the precursors is an alternative avoiding the addition of any other chemicals. The study of the hybrids prepared by this method has been progressing to understand the impact of different variables on the microstructure. In this work, the influence of the polymer's molecular weight on the microstructure of the materials is investigated. Hybrids were obtained from a mixture of polydimethylsiloxane (PDMS) silanol terminated, tetraethylorthosilicate (TEOS) and zirconium propoxide (PrZr) in the wt% composition 20PDMS-73TEOS-7PrZr varying only the PDMS molecular weight. The obtained materials are homogeneous, transparent and flexible and their microstructure was analysed by Scanning Electron Microscopy (SEM) and Small-Angle Neutron Scattering (SANS). It was found that different microstructures were obtained, depending on the polymer molecular weight. (C) 2014 Elsevier Ltd. All rights reserved.

KW - Hybrid materials

KW - Gamma irradiation

KW - Microstructure

KW - Molecular weight

U2 - 10.1016/j.radphyschem.2014.06.023

DO - 10.1016/j.radphyschem.2014.06.023

M3 - Article

VL - 106

SP - 126

EP - 129

JO - Radiation Physics and Chemistry

JF - Radiation Physics and Chemistry

SN - 0969-806X

ER -

Influence of the polymer molecular weight on the microstructure of hybrid materials prepared by gamma-irradiation

Abstract

Keywords

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