Microwave-assisted cationic polymerization of palm olein and their urea inclusion products

International Conference on Chemistry and Material Science 2017

化学;材料科学

Soegijono, Bambang^1 ; Farid, Muhamad^1 ; Mas'Ud, Zainal Alim^2

Department of Physics, University of Indonesia, Kampus UI, Depok

16424, Indonesia^1

Department of Chemistry, Bogor Agricultural University, Kampus IPB, Dramaga Bogor

16680, Indonesia^2

关键词: Differential scanning calorimetric;    Fatty acid composition;    Fourier transform infra reds;    Microwave assisted;    Polymerization products;    Spectro-photometric method;    Thermal characteristics;    Ultraviolet absorption;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012095/pdf
DOI  :  10.1088/1757-899X/299/1/012095

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Cationic polymerization is affected by the relative amount of unsaturated bond (C=C) in the compound. The enrichment of an unsaturated triglyceride fraction from oils may be performed using urea inclusion techniques. In this study, palm olein was enriched-unsaturated fraction using urea-methanol system. The palm olein and its urea-inclusion products were cationic polymerized with ethereal boron trifluoride catalyst and followed by irradiation using a commercial microwave (microwave-assisted). The microwave irradiated products were cured at 110 °C for 24 hours. Fatty acid composition of the palm olein and its urea-inclusion products were analyzed by gas chromatography. Iodine numbers, functional groups, and ultraviolet absorption spectra of all palm olein origin, urea inclusion products and polymerization products were analyzed using titrimetric, ultraviolet spectrophotometric, and Fourier Transform infrared spectrophotometric methods. Differential scanning calorimetric (DSC) was used to observe the thermal characteristics of the polymer. Urea-inclusion process increased the unsaturated fatty acid components as indicated by the increased iodine number, intensity of alkene band absorptions in the infrared spectra, and the absorbance of the ultraviolet spectra. The polymer formation is converting the C=C group to C-C, which is indicated by the opposite of the urea inclusion process. The curing process results in reformation of new C=C bonds that were similar to that of the urea inclusion process. The DSC thermogram curve shows that the enrichment process improves the thermal stability of the polymer formed.