The influences of the transfer method and particle surface chemistry on the dispersion of nanoparticles in nanocomposites
Pravaz, Olivier ; Droz, Benoit ; Schurtenberger, Peter LU
and Dietsch, Herve
(2012)
In Nanoscale
4(21).
p.6856-6862
- Abstract
- The synthesis via in situ polymerization and characterization of nanocomposites (NCs) made from silica (SiO2) nanoparticles in a methyl methacrylate (MMA) monomer matrix is reported. We first investigate the transfer of well-defined spherical silica nanoparticles (NPs) (average radius R = 24.2 +/- 3.2 nm) into the monomer solvent. We study the influence of two transfer methods and different surface chemistries on the resulting colloidal stability. The first transfer method consists of drying the silica particles into powder before dispersing them via ultrasonication in the MMA matrix. The second is based on repetitive centrifugations to exchange NPs from their synthetic milieu to pure MMA, avoiding the dried powder state. These transfer... (More)
- The synthesis via in situ polymerization and characterization of nanocomposites (NCs) made from silica (SiO2) nanoparticles in a methyl methacrylate (MMA) monomer matrix is reported. We first investigate the transfer of well-defined spherical silica nanoparticles (NPs) (average radius R = 24.2 +/- 3.2 nm) into the monomer solvent. We study the influence of two transfer methods and different surface chemistries on the resulting colloidal stability. The first transfer method consists of drying the silica particles into powder before dispersing them via ultrasonication in the MMA matrix. The second is based on repetitive centrifugations to exchange NPs from their synthetic milieu to pure MMA, avoiding the dried powder state. These transfer methods are compared for two kinds of NP surface chemistry, natural silanol (Si-OH) groups of the silica NPs and an additional silane coupling agent, namely 3-(trimethoxysilyl)propyl methacrylate (TPM), which mimics the monomeric group of the MMA dispersing milieu. We then characterize the morphology of the resulting nanocomposites prepared via in situ polymerization at a fixed amount of dispersed NPs (2.2 wt%; 1 vol%) using a combination of transmission electron microscopy (TEM) from ultramicrotomed nanocomposite films, thermogravimetry (TGA) and small angle X-ray scattering (SAXS). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3243994
- author
- Pravaz, Olivier
; Droz, Benoit
; Schurtenberger, Peter
LU
and Dietsch, Herve
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nanoscale
- volume
- 4
- issue
- 21
- pages
- 6856 - 6862
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000310940500028
- scopus:84874437357
- pmid:23034718
- ISSN
- 2040-3372
- DOI
- 10.1039/c2nr31846f
- language
- English
- LU publication?
- yes
- id
- 2751b746-77a2-4896-a203-fa6e63d1bbe3 (old id 3243994)
- date added to LUP
- 2016-04-01 11:04:34
- date last changed
- 2022-01-26 05:10:46
@article{2751b746-77a2-4896-a203-fa6e63d1bbe3,
abstract = {{The synthesis via in situ polymerization and characterization of nanocomposites (NCs) made from silica (SiO2) nanoparticles in a methyl methacrylate (MMA) monomer matrix is reported. We first investigate the transfer of well-defined spherical silica nanoparticles (NPs) (average radius R = 24.2 +/- 3.2 nm) into the monomer solvent. We study the influence of two transfer methods and different surface chemistries on the resulting colloidal stability. The first transfer method consists of drying the silica particles into powder before dispersing them via ultrasonication in the MMA matrix. The second is based on repetitive centrifugations to exchange NPs from their synthetic milieu to pure MMA, avoiding the dried powder state. These transfer methods are compared for two kinds of NP surface chemistry, natural silanol (Si-OH) groups of the silica NPs and an additional silane coupling agent, namely 3-(trimethoxysilyl)propyl methacrylate (TPM), which mimics the monomeric group of the MMA dispersing milieu. We then characterize the morphology of the resulting nanocomposites prepared via in situ polymerization at a fixed amount of dispersed NPs (2.2 wt%; 1 vol%) using a combination of transmission electron microscopy (TEM) from ultramicrotomed nanocomposite films, thermogravimetry (TGA) and small angle X-ray scattering (SAXS).}},
author = {{Pravaz, Olivier and Droz, Benoit and Schurtenberger, Peter and Dietsch, Herve}},
issn = {{2040-3372}},
language = {{eng}},
number = {{21}},
pages = {{6856--6862}},
publisher = {{Royal Society of Chemistry}},
series = {{Nanoscale}},
title = {{The influences of the transfer method and particle surface chemistry on the dispersion of nanoparticles in nanocomposites}},
url = {{http://dx.doi.org/10.1039/c2nr31846f}},
doi = {{10.1039/c2nr31846f}},
volume = {{4}},
year = {{2012}},
}