Hydrophobic silica composite aerogels using poly(methyl methacrylate) by rapid supercritical extraction process

Hae Noo Ree Jung, Yoon Kwang Lee, V. G. Parale, Hyung Hee Cho, D. B. Mahadik, Hyung-Ho Park

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Abstract: A poly(methyl methacrylate) solution was mixed in an optimized tetraethoxysilane-based silica sol and a silica aerogel was obtained by a rapid supercritical extraction process. The hydrophobicity was enhanced by an addition of poly(methyl methacrylate), the silica aerogel prepared with 6 wt% poly(methyl methacrylate) has the contact angle of 156° with low density (0.067 g/cm3), high surface area (829 m2/g), and low thermal conductivity (0.072 W/m·K). The thermogravimetric-differential thermal analysis also showed that the aerogels were hydrophobic up to a temperature of 393 °C. An extra hydrophobicity could be expected for silica aerogel using poly(methyl methacrylate) through the surface modification of silica aerogel with generated –OCH3 and –CH3 radicals by the thermal decomposition of poly(methyl methacrylate) excluding poly(methyl methacrylate) itself. This study provided a simple and cost effective method that used an inexpensive polymer additive without using an expensive surface modification agent nor hydrophobic silica precursor. Graphical Abstract: [InlineMediaObject not available: see fulltext.].

Original languageEnglish
Pages (from-to)692-697
Number of pages6
JournalJournal of Sol-Gel Science and Technology
Volume83
Issue number3
DOIs
Publication statusPublished - 2017 Sep 1

Fingerprint

Aerogels
aerogels
Polymethyl Methacrylate
Polymethyl methacrylates
polymethyl methacrylate
Silicon Dioxide
Silica
silicon dioxide
composite materials
Composite materials
Hydrophobicity
hydrophobicity
Surface treatment
Polymers
Sols
Differential thermal analysis
Contact angle
thermal decomposition
Thermal conductivity
thermal analysis

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

@article{2d8f5a51da5941288a42a5f9fb001e02,
title = "Hydrophobic silica composite aerogels using poly(methyl methacrylate) by rapid supercritical extraction process",
abstract = "Abstract: A poly(methyl methacrylate) solution was mixed in an optimized tetraethoxysilane-based silica sol and a silica aerogel was obtained by a rapid supercritical extraction process. The hydrophobicity was enhanced by an addition of poly(methyl methacrylate), the silica aerogel prepared with 6 wt{\%} poly(methyl methacrylate) has the contact angle of 156° with low density (0.067 g/cm3), high surface area (829 m2/g), and low thermal conductivity (0.072 W/m·K). The thermogravimetric-differential thermal analysis also showed that the aerogels were hydrophobic up to a temperature of 393 °C. An extra hydrophobicity could be expected for silica aerogel using poly(methyl methacrylate) through the surface modification of silica aerogel with generated –OCH3 and –CH3 radicals by the thermal decomposition of poly(methyl methacrylate) excluding poly(methyl methacrylate) itself. This study provided a simple and cost effective method that used an inexpensive polymer additive without using an expensive surface modification agent nor hydrophobic silica precursor. Graphical Abstract: [InlineMediaObject not available: see fulltext.].",
author = "Jung, {Hae Noo Ree} and Lee, {Yoon Kwang} and Parale, {V. G.} and Cho, {Hyung Hee} and Mahadik, {D. B.} and Hyung-Ho Park",
year = "2017",
month = "9",
day = "1",
doi = "10.1007/s10971-017-4438-4",
language = "English",
volume = "83",
pages = "692--697",
journal = "Journal of Sol-Gel Science and Technology",
issn = "0928-0707",
publisher = "Springer Netherlands",
number = "3",

}

Hydrophobic silica composite aerogels using poly(methyl methacrylate) by rapid supercritical extraction process. / Jung, Hae Noo Ree; Lee, Yoon Kwang; Parale, V. G.; Cho, Hyung Hee; Mahadik, D. B.; Park, Hyung-Ho.

In: Journal of Sol-Gel Science and Technology, Vol. 83, No. 3, 01.09.2017, p. 692-697.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Hydrophobic silica composite aerogels using poly(methyl methacrylate) by rapid supercritical extraction process

AU - Jung, Hae Noo Ree

AU - Lee, Yoon Kwang

AU - Parale, V. G.

AU - Cho, Hyung Hee

AU - Mahadik, D. B.

AU - Park, Hyung-Ho

PY - 2017/9/1

Y1 - 2017/9/1

N2 - Abstract: A poly(methyl methacrylate) solution was mixed in an optimized tetraethoxysilane-based silica sol and a silica aerogel was obtained by a rapid supercritical extraction process. The hydrophobicity was enhanced by an addition of poly(methyl methacrylate), the silica aerogel prepared with 6 wt% poly(methyl methacrylate) has the contact angle of 156° with low density (0.067 g/cm3), high surface area (829 m2/g), and low thermal conductivity (0.072 W/m·K). The thermogravimetric-differential thermal analysis also showed that the aerogels were hydrophobic up to a temperature of 393 °C. An extra hydrophobicity could be expected for silica aerogel using poly(methyl methacrylate) through the surface modification of silica aerogel with generated –OCH3 and –CH3 radicals by the thermal decomposition of poly(methyl methacrylate) excluding poly(methyl methacrylate) itself. This study provided a simple and cost effective method that used an inexpensive polymer additive without using an expensive surface modification agent nor hydrophobic silica precursor. Graphical Abstract: [InlineMediaObject not available: see fulltext.].

AB - Abstract: A poly(methyl methacrylate) solution was mixed in an optimized tetraethoxysilane-based silica sol and a silica aerogel was obtained by a rapid supercritical extraction process. The hydrophobicity was enhanced by an addition of poly(methyl methacrylate), the silica aerogel prepared with 6 wt% poly(methyl methacrylate) has the contact angle of 156° with low density (0.067 g/cm3), high surface area (829 m2/g), and low thermal conductivity (0.072 W/m·K). The thermogravimetric-differential thermal analysis also showed that the aerogels were hydrophobic up to a temperature of 393 °C. An extra hydrophobicity could be expected for silica aerogel using poly(methyl methacrylate) through the surface modification of silica aerogel with generated –OCH3 and –CH3 radicals by the thermal decomposition of poly(methyl methacrylate) excluding poly(methyl methacrylate) itself. This study provided a simple and cost effective method that used an inexpensive polymer additive without using an expensive surface modification agent nor hydrophobic silica precursor. Graphical Abstract: [InlineMediaObject not available: see fulltext.].

UR - http://www.scopus.com/inward/record.url?scp=85020296287&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020296287&partnerID=8YFLogxK

U2 - 10.1007/s10971-017-4438-4

DO - 10.1007/s10971-017-4438-4

M3 - Article

AN - SCOPUS:85020296287

VL - 83

SP - 692

EP - 697

JO - Journal of Sol-Gel Science and Technology

JF - Journal of Sol-Gel Science and Technology

SN - 0928-0707

IS - 3

ER -