Publication:
Polyhedral oligomeric silsesquioxane (POSS) containing sulfonic acid groups as a metal-free catalyst to prepare polycaprolactone

Issued Date

2017-01-13

Resource Type

Article

ISSN

00323861

DOI

10.1016/j.polymer.2016.11.038

Other identifier(s)

2-s2.0-84999767779

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Polymer. Vol.108, (2017), 173-178

Suggested Citation

Rungthip Kunthom, Thapakorn Jaroentomeechai, Vuthichai Ervithayasuporn Polyhedral oligomeric silsesquioxane (POSS) containing sulfonic acid groups as a metal-free catalyst to prepare polycaprolactone. Polymer. Vol.108, (2017), 173-178. doi:10.1016/j.polymer.2016.11.038 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/42243

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Title

Polyhedral oligomeric silsesquioxane (POSS) containing sulfonic acid groups as a metal-free catalyst to prepare polycaprolactone

Author(s)

Rungthip Kunthom
 Thapakorn Jaroentomeechai
 Vuthichai Ervithayasuporn

Other Contributor(s)

Mahidol University

Abstract

© 2016 Elsevier Ltd Organic-inorganic hybrid nano-building block of polyhedral oligomeric silsesquioxane (POSS) containing hyperbranched sulfonic acid groups was easily prepared within a day through oxidation reaction at room temperature. The desired product was fully characterized by 1H, 13C{1H} NMR, 29Si CP/MAS NMR, FT-IR spectroscopy, and TGA-DSC analysis, confirming the complete formation of sulphonic acids while retaining the cubic structure of silsesquioxanes cage. Furthermore, the proton exchange capacities of POSS catalyst were determined to be 5.39 meq of H+/g, much greater than any previous silicon-based materials, leading to the catalytic preparation of polycaprolactone with well-controlled polymerization under the metal-free system and without the addition of any co-catalysts and solvents.

Keyword(s)

Chemistry

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https://repository.li.mahidol.ac.th/handle/20.500.14594/42243

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Scopus 2016-2017