{
  "abstract": "Highly insulating polymethylsilsesquioxane (PMSQ) aerogel-like xerogels were prepared from methyltrimethoxysilane in 2-propanol (IPA)/water using 10 wt % aqueous tetraethylammonium hydroxide in a one-step reaction without an acid step or surfactant. Fine interconnected skeletons were obtained after ambient-pressure drying. Infrared spectroscopy and solid-state 29Si nuclear magnetic resonance indicated fewer residual silanols in the dried material than in a two-step reference. A 20-fold scale-up gave effective thermal conductivities of 0.018 W m−1 K−1 for granular material and 0.021 W m−1 K−1 for a PMSQ-filled panel with a polycarbonate casing at 20 °C. This provides a simple route to insulating granular PMSQ.",
  "abstract_shown": true,
  "affiliations": [
    "Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, Japan, 305-0044",
    "Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, Japan, 611-0011"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Gen Hayase",
      "orcid": "0000-0003-1970-6129"
    },
    {
      "affs": [
        1
      ],
      "name": "Yuta Sakurai"
    },
    {
      "affs": [
        1
      ],
      "name": "Yusaku Azuma"
    },
    {
      "affs": [
        1
      ],
      "name": "Hironori Kaji"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bdyjvztne0zmv.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010592/v1",
  "fulltext_url": null,
  "id": "bdyjvztne0zmv",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010592/v1",
  "language": null,
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1607|Aerogels and thermal insulation"
    ]
  ],
  "openalex": "W7222594450",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15010592/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-16",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/bdyjvztne0zmv.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "10.26434/chemrxiv.15010592",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010592/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1607|Aerogels and thermal insulation",
      "subfield": "physical"
    }
  ],
  "title": "Polymethylsilsesquioxane Aerogel-like Xerogels via a Surfactant-Free Base-Catalyzed Process",
  "title_text": "Polymethylsilsesquioxane Aerogel-like Xerogels via a Surfactant-Free Base-Catalyzed Process",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:24Z",
  "url": "https://research.draconitic.com/paper/bdyjvztne0zmv",
  "venue": "ChemRxiv",
  "versions": []
}