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Thermal study on polyester networks based on the renewable monomers citric acid and gluconolactone

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de Jongh, Patrick A. J. M., Paul, Prem K. C., Khoshdel , Ezat, Wilson, Paul, Kempe, Kristian and Haddleton, David M. (2017) Thermal study on polyester networks based on the renewable monomers citric acid and gluconolactone. Polymer International, 66 (1). pp. 59-63. doi:10.1002/pi.5260 ISSN 0959-8103.

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Official URL: http://doi.org/10.1002/pi.5260

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Abstract

A detailed thermal study is presented of the melt polycondensation between the renewable monomers citric acid and d-glucono-δ-lactone. It was found that the polyester networks formed have glass transition temperature ranges that increase with increasing reaction temperature and time, corresponding to an increase in molecular weight. The minimum reaction temperature was investigated and found to be 130 °C for a 1/1 system. Moreover, the monomers show eutectic melt behaviour, with a eutectic melting temperature of 125 °C. A range of additional co-monomers were evaluated, revealing that aliphatic and aromatic bifunctional co-monomers result in lower glass transition temperatures. When polyfunctional co-monomers were employed it was found that the chain flexibility influenced the resulting thermal properties. Moreover, it is shown that the ring structure of d-glucono-δ-lactone plays a key role in the thermal properties of the resulting polyesters. © 2016 Society of Chemical Industry

Item Type: Journal Article
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Science, Engineering and Medicine > Science > Chemistry
Library of Congress Subject Headings (LCSH): Polyesters -- Thermal properties, Citric acid, Calorimetry, Glass transition temperature
Journal or Publication Title: Polymer International
Publisher: John Wiley & Sons Ltd.
ISSN: 0959-8103
Official Date: January 2017
Dates:
DateEvent
January 2017Published
18 October 2016Available
7 September 2016Accepted
Volume: 66
Number: 1
Page Range: pp. 59-63
DOI: 10.1002/pi.5260
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 13 September 2016
Date of first compliant Open Access: 12 September 2017
Funder: Unilever (Firm), University of Warwick, Royal Society (Great Britain). University Research Fellowship

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