Facile synthesis of hydrophobic, thermally stable, and insulative organically modified silica aerogels using co-precursor method

Vinayak G. Parale; Kyu Yeon Lee; Hae Noo Ree Jung; Ha Yoon Nah; Haryeong Choi; Tae Hee Kim; Varsha D. Phadtare; Hyung Ho Park

doi:10.1016/j.ceramint.2017.11.189

Facile synthesis of hydrophobic, thermally stable, and insulative organically modified silica aerogels using co-precursor method

Vinayak G. Parale, Kyu Yeon Lee, Hae Noo Ree Jung, Ha Yoon Nah, Haryeong Choi, Tae Hee Kim, Varsha D. Phadtare, Hyung Ho Park

Department of Materials Science and Engineering

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

42 Citations (Scopus)

Abstract

Silica aerogels have low density and high specific surface area, but there are restrictions regarding their durability and commercialization owing to their fragile nature and the strong moisture absorbing behavior of the siloxane network. To overcome these restrictions, this study evaluated hybrid organically modified silica (ORMOSIL) aerogels by employing 3-(trimethoxysilylpropyl) methacrylate (TMSPM) in tetraethyl orthosilicate (TEOS) through a two-step sol-gel co-precursor method. The methacrylate organic groups were incorporated into the silica networks via reactions between the Si-OH moieties in silica aerogels, resulting in ORMOSIL aerogels. The properties of the ORMOSIL aerogels were strongly affected by the amount of TMSPM co-precursor. The highest concentration of TMSPM (30 wt%) resulted in ORMOSIL aerogels with improved characteristics when compared with the pristine TEOS-based silica aerogels, such as hardness (0.15 GPa), Young's modulus (1.26 GPa), low thermal conductivity (0.038 W/m K), high water contact angle (140°), and high thermal stability (350 °C).

Original language	English
Pages (from-to)	3966-3972
Number of pages	7
Journal	Ceramics International
Volume	44
Issue number	4
DOIs	https://doi.org/10.1016/j.ceramint.2017.11.189
Publication status	Published - 2018 Mar

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2015R1D1A1A02062229 ). This work was supported by the Center for Advanced Meta-Materials (CAMM) funded by the Ministry of Science, ICT, and Future Planning as Global Frontier Project (CAMM-No. NRF-2014M3A6B3063716 ). The author V.G. Parale would like to thank the Brain Korea 21 (BK21) Project for financial support in the form of a postdoctoral fellowship.

Publisher Copyright:
© 2017 Elsevier Ltd and Techna Group S.r.l.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2017.11.189

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title = "Facile synthesis of hydrophobic, thermally stable, and insulative organically modified silica aerogels using co-precursor method",

abstract = "Silica aerogels have low density and high specific surface area, but there are restrictions regarding their durability and commercialization owing to their fragile nature and the strong moisture absorbing behavior of the siloxane network. To overcome these restrictions, this study evaluated hybrid organically modified silica (ORMOSIL) aerogels by employing 3-(trimethoxysilylpropyl) methacrylate (TMSPM) in tetraethyl orthosilicate (TEOS) through a two-step sol-gel co-precursor method. The methacrylate organic groups were incorporated into the silica networks via reactions between the Si-OH moieties in silica aerogels, resulting in ORMOSIL aerogels. The properties of the ORMOSIL aerogels were strongly affected by the amount of TMSPM co-precursor. The highest concentration of TMSPM (30 wt%) resulted in ORMOSIL aerogels with improved characteristics when compared with the pristine TEOS-based silica aerogels, such as hardness (0.15 GPa), Young's modulus (1.26 GPa), low thermal conductivity (0.038 W/m K), high water contact angle (140°), and high thermal stability (350 °C).",

author = "Parale, {Vinayak G.} and Lee, {Kyu Yeon} and Jung, {Hae Noo Ree} and Nah, {Ha Yoon} and Haryeong Choi and Kim, {Tae Hee} and Phadtare, {Varsha D.} and Park, {Hyung Ho}",

note = "Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2015R1D1A1A02062229 ). This work was supported by the Center for Advanced Meta-Materials (CAMM) funded by the Ministry of Science, ICT, and Future Planning as Global Frontier Project (CAMM-No. NRF-2014M3A6B3063716 ). The author V.G. Parale would like to thank the Brain Korea 21 (BK21) Project for financial support in the form of a postdoctoral fellowship. Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd and Techna Group S.r.l.",

year = "2018",

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doi = "10.1016/j.ceramint.2017.11.189",

language = "English",

volume = "44",

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T1 - Facile synthesis of hydrophobic, thermally stable, and insulative organically modified silica aerogels using co-precursor method

AU - Parale, Vinayak G.

AU - Lee, Kyu Yeon

AU - Jung, Hae Noo Ree

AU - Nah, Ha Yoon

AU - Choi, Haryeong

AU - Kim, Tae Hee

AU - Phadtare, Varsha D.

AU - Park, Hyung Ho

N1 - Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2015R1D1A1A02062229 ). This work was supported by the Center for Advanced Meta-Materials (CAMM) funded by the Ministry of Science, ICT, and Future Planning as Global Frontier Project (CAMM-No. NRF-2014M3A6B3063716 ). The author V.G. Parale would like to thank the Brain Korea 21 (BK21) Project for financial support in the form of a postdoctoral fellowship. Publisher Copyright: © 2017 Elsevier Ltd and Techna Group S.r.l.

PY - 2018/3

Y1 - 2018/3

N2 - Silica aerogels have low density and high specific surface area, but there are restrictions regarding their durability and commercialization owing to their fragile nature and the strong moisture absorbing behavior of the siloxane network. To overcome these restrictions, this study evaluated hybrid organically modified silica (ORMOSIL) aerogels by employing 3-(trimethoxysilylpropyl) methacrylate (TMSPM) in tetraethyl orthosilicate (TEOS) through a two-step sol-gel co-precursor method. The methacrylate organic groups were incorporated into the silica networks via reactions between the Si-OH moieties in silica aerogels, resulting in ORMOSIL aerogels. The properties of the ORMOSIL aerogels were strongly affected by the amount of TMSPM co-precursor. The highest concentration of TMSPM (30 wt%) resulted in ORMOSIL aerogels with improved characteristics when compared with the pristine TEOS-based silica aerogels, such as hardness (0.15 GPa), Young's modulus (1.26 GPa), low thermal conductivity (0.038 W/m K), high water contact angle (140°), and high thermal stability (350 °C).

AB - Silica aerogels have low density and high specific surface area, but there are restrictions regarding their durability and commercialization owing to their fragile nature and the strong moisture absorbing behavior of the siloxane network. To overcome these restrictions, this study evaluated hybrid organically modified silica (ORMOSIL) aerogels by employing 3-(trimethoxysilylpropyl) methacrylate (TMSPM) in tetraethyl orthosilicate (TEOS) through a two-step sol-gel co-precursor method. The methacrylate organic groups were incorporated into the silica networks via reactions between the Si-OH moieties in silica aerogels, resulting in ORMOSIL aerogels. The properties of the ORMOSIL aerogels were strongly affected by the amount of TMSPM co-precursor. The highest concentration of TMSPM (30 wt%) resulted in ORMOSIL aerogels with improved characteristics when compared with the pristine TEOS-based silica aerogels, such as hardness (0.15 GPa), Young's modulus (1.26 GPa), low thermal conductivity (0.038 W/m K), high water contact angle (140°), and high thermal stability (350 °C).

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JO - Ceramics International

JF - Ceramics International

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ER -

Facile synthesis of hydrophobic, thermally stable, and insulative organically modified silica aerogels using co-precursor method

Abstract

Bibliographical note

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