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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
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 | ||||||||
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| 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: |
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| 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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