Clark, Andrew J. and Hoong, Seng Soi (2014) Copolymers of tetrahydrofuran and epoxidized vegetable oils : application to elastomeric polyurethanes. Polymer Chemistry, 5 (9). pp. 3238-3244. doi:10.1039/C3PY01527K ISSN 1759-9954.

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Abstract

The Lewis acid ring-opening of epoxidized vegetable oils (EVO's) in the presence of tetrahydrofuran (THF) gives rise to polyether polyol co-polymers p(THF-stat-EVO). The effect of Lewis acid, vegetable oil substrate (epoxidised methyloleate EMO, epoxidised cocoa butter ECB, and epoxidised palm oil EPO) and conditions (concentration, temperature and time) on the molecular weight, polydispersity, hydroxyl value and thermal properties of the p(THF-stat-EVO) macromonomers was determined. Elastomeric polyurethanes were prepared from p(THF-stat-EVO) macromonomers and MDI and their mechanical and thermal properties determined. The properties of the polyurethane derived from p(THF-EPO) were compared to that derived from the homopolymer of epoxidised palm oil (EPO) prepared by Lewis acid ring-opening in the absence of THF. The co-polymer incorporating THF gave rise to a material with significantly greater tensile strength [p(THF-EPO-MDI) = 9.1 MPa, p(EPO-MDI) = 1.5 MPa] and elongation at break [p(THF-EPO-MDI) = 425%, p(EPO-MDI) = 70%] with little compromise on thermal stability [p(THF-EPO-MDI) Tdecomp10% = 378 °C, Tdecomp50% = 414 °C, p(EPO-MDI) Tdecomp10% = 379 °C Tdecomp50% = 424 °C].

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):	Tetrahydrofuran, Copolymers, Vegetable oils, Elastomers, Polyurethanes
Journal or Publication Title:	Polymer Chemistry
Publisher:	Royal Society of Chemistry
ISSN:	1759-9954
Official Date:	7 May 2014
Dates:	Date Event 7 May 2014 Published 1 November 2013 Available 31 October 2013 Accepted 31 October 2013 Submitted
Volume:	5
Number:	9
Page Range:	pp. 3238-3244
DOI:	10.1039/C3PY01527K
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access (Creative Commons)
Date of first compliant deposit:	9 January 2017
Date of first compliant Open Access:	9 January 2017
Funder:	Lembaga Minyak Sawit Malaysia

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