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Chemical Analyses of Palm Kernel Oil-Based Polyurethane Prepolymer
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Materials Sciences and Applications·Volume 03 (2012)·Pages 78–86·Published 17 February 2012·DOI10.4236/msa.2012.32012
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Abstract
Polyurethane (PU) was prepared from palm kernel oil-based monoester polyol (PKO-p) via prepolymerization method at NCO/OH ratio of 200/100, 150/100, 100/100, and 75/100 at ambient temperature under nitrogen gas atmosphere. The structure of the synthesized prepolymerized PKO-p PU was determined using FTIR and 13 C NMR. The disapperance of NCO peak in the FTIR spectrum at 2270 cm –1 - 2250 cm –1 cm showed that MDI has completely reacted to form PU. The appearance of C=O peak at 1700 cm –1 indicated that hydrogen bonding was formed between the soft segmented chain of the PKO-p and the hard segmented MDI. Hence, urethane bond was the main polymeric chain in the PU.
KeywordsPalm Kernel OilPrepolymerizationPolyurethaneSoft SegmentHard Segment
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