# Surfactant-Free Aqueous Fabrication of Macroporous Silicone Monoliths for Flexible Thermal Insulation

https://mdr.nims.go.jp/datasets/771db13f-cfc1-4bb5-8388-dd5aa4dbdfb0

## File

- [BCSJ2021_postprint.pdf](https://mdr.nims.go.jp/filesets/abacf83f-8624-44ba-a275-e88b4b29f531/download) ([Detail](https://mdr.nims.go.jp/filesets/abacf83f-8624-44ba-a275-e88b4b29f531.md))

## Id

771db13f-cfc1-4bb5-8388-dd5aa4dbdfb0

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-06-03T06:12:37.536432Z

## Updated at

2024-08-20T07:30:26.261552Z

## Published at

2024-08-20T07:30:26.378997Z

## Doi

https://doi.org/10.48505/nims.4664

## First published url

https://doi.org/10.1246/bcsj.20210189

## Date published

2021-09-15

## Recorded date published

2021-9-15

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Surfactant-Free Aqueous Fabrication of Macroporous Silicone Monoliths for
    Flexible Thermal Insulation
  title_type: original
  lang: en

## Description

- description: シリコーンは疎水性が高いため、ゾル－ゲル法でモノリス型マクロ多孔体を作製する際には、これまで界面活性剤を使用する必要があった。不純物である界面活性剤は乾燥前に完全除去する必要があり、洗浄には大量の溶媒と時間を要する問題が存在した。本研究では、原料として用いるケイ素アルコキシドの組成を工夫することで、界面活性剤を使用しない作製法に成功した。得られたモノリスは、80%の単軸圧縮や大幅な曲げ後にも元の形状を回復し、高い撥水性を示した。室温における熱伝導率は約0.035
    W m−1 K−1であり、60%まで圧縮してもこの熱伝導率は変わらなかった。狭い空間における断熱応用が期待される。
  description_type: abstract
  lang: und
- description: Due to the highly hydrophobic nature of silicone, it has been necessary
    to use a surfactant in the preparation of monolithic macroporous materials using
    the sol-gel method. The unwanted surfactant must be completely removed before
    drying, and washing requires a large amount of solvent and time. In this study,
    a surfactant-free preparation method was developed by modifying the composition
    of the silicon alkoxide used as raw material. The obtained monoliths recovered
    their original shape even after 80% uniaxial compression and significant bending,
    and exhibited high water repellency. The thermal conductivity at room temperature
    was about 0.035 W m-1 K-1, which did not change even after 60% compression. It
    is expected to be used for thermal insulation in confined spaces.
  description_type: abstract
  lang: en

## Creator

- name: Gen Hayase
  role: author
  orcid: https://orcid.org/0000-0003-1970-6129
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: The Chemical Society of Japan

## Managing organization



## Keyword

- subject: porous monoliths
  schema: not_defined
- subject: silicone
  schema: not_defined
- subject: thermal insulation
  schema: not_defined

## Rights

- description: 'This is a pre-copyedited, author-produced version of an article accepted
    for publication in Bulletin of the Chemical Society of Japan following peer review.
    The version of record Gen Hayase, Surfactant-Free Aqueous Fabrication of Macroporous
    Silicone Monoliths for Flexible Thermal Insulation, Bulletin of the Chemical Society
    of Japan, Volume 94, Issue 9, September 2021, Pages 2210–2215 is available online
    at: https://doi.org/10.1246/bcsj.20210189'
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2021-07-28
end_date: 2022-07-28

## Journal

- title: Bulletin of the Chemical Society of Japan
  issn: '13480634'
  volume: '94'
  issue: '9'
  start_page: 2210
  end_page: 2215

## Conference



## Related item



## Funding

- funder_name: Ministry of Education, Culture, Sports, Science and Technology

## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Fileset

- id: abacf83f-8624-44ba-a275-e88b4b29f531
  filename: BCSJ2021_postprint.pdf
  content_type: application/pdf
  size: 1199024
  md5: 102bca283ace9365f5bae2855ff29275

## Thumbnail

fileset_id: abacf83f-8624-44ba-a275-e88b4b29f531
filename: BCSJ2021_postprint.pdf