Hoong, Seng Soi (2013) Synthesis of oligomers/polymers from plant oil derivatives. PhD thesis, University of Warwick.

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Abstract

The work presented in this thesis represents the chemical modifications of
unsaturated plant oils to yield oligomeric/polymeric polyols suitable for polyurethane
synthesis. Chapter 1 provides the introduction to the chemistry of polyurethanes,
plant oils and plant oil based polyols. Chapter 2 focus on making oligomeric polyols
from unsaturated plant oils through epoxidation and subsequent epoxide ring opening
oligomerization that yielded oligomeric polyols. The properties of these oligomeric
polyols were influence by the level of unsaturation of the plant oils. In addition,
catalyst loading, monomer concentration and reaction time play vital role in
determining the properties of the oligomeric polyols. Plant oil based polyols were
also prepared by epoxide ring opening with renewable polyhydric alcohols that
provide a variety of plant oil based polyols for polyurethane synthesis.
Chapter 3 focus on the synthesis of polyurethanes (PU) from various types of plant
oil based polyols as well as the evaluation of the mechanical properties of these
synthesized PU. The tensile test of the PU shows that the mechanical properties were
related to the structure and functionalities of the plant oil based polyols. The bulk of
Chapter 4 discusses the copolymerization of epoxidized plant oils with
tetrahydrofuran and the use of these copolymers for the synthesis of PU. The
properties of the copolymers were related to the epoxidized oils used in the reaction
and therefore influence the mechanical properties of the PU synthesized from them.
Finally, Chapter 5 is a collection of work on the one-pot oligomerization of
unsaturated fatty acid and plant oils with and without catalyst as well as the synthesis
of PU based on these polyols.

Item Type:	Thesis or Dissertation (PhD)
Subjects:	Q Science > QD Chemistry T Technology > TP Chemical technology
Library of Congress Subject Headings (LCSH):	Oligomers -- Synthesis, Plant polymers -- Synthesis, Polyurethanes -- Synthesis, Vegetable oils
Official Date:	February 2013
Dates:	Date Event February 2013 Submitted
Institution:	University of Warwick
Theses Department:	Department of Chemistry
Thesis Type:	PhD
Publication Status:	Unpublished
Supervisor(s)/Advisor:	Clark, A. J. (Andrew J.)
Sponsors:	Lembaga Minyak Sawit Malaysia [Malaysian Palm Oil Board]
Extent:	xii, 278 leaves : illustrations.
Language:	eng

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