Properties of biobased polyurethanes from rubber seed oil poloy and aliphatic polyisocyanate

Monday, May 1, 2023

4:30 PM – 6:00 PM MDT

Presenting Author(s)

EO

Efosa O. Obazee

Assistant Director / Programme Leader
Rubber Research Institute of Nigeria
Benin City, Edo, Nigeria

Co-Author(s)

FO

Felix E. Okieimen

Dean of Postgraduate School, University of Benin.
University of Benin
Benin City, Nigeria
EO

Efosa O. Obazee

Director & Head
Rubber Research Institute of Nigeria
P.M.B. 1049 Benin City, Edo, Nigeria

Abstract: Rubber seed oil polyol was used in preparing biobased polyurethanes (PUH I-III) by reaching with hexamethylene diisocyanate in the absence of an extender at NCO/OH ratios of 1.0, 1.2 and 1.4, respectively. Spectroscopic and X-ray scattering techniques was used to provide some information on the structure and morphology of the obtained polymers, while universal testing machine, nanoindenter and thermo gravimetric analyzer gave insight into the mechanical and thermal properties. Tensile strength, hardness and modulus were observed to increase as the NCO/OH ratio increased from samples I-III, while elongation at break and degree of swelling decreased accordingly, providing soft to semi-rigid biobased polyurethanes.