Microcapsules of Poly(urea formaldehyde) (PUF) Containing alkyd from Palm Oil
Abstract This paper describes the encapsulation procedure of an alkyd resin derived from palm oil. The palm oil based alkyd having carboxylic and hydroxyl moieties can be tailor made to suit the intended application. Microencapsulation process was done using poly(urea formaldehyde) (PUF) resin as shell material. The microcapsules obtained were free flowing, with 80 90% core encapsulated, and are intended to be used in self healing material development. The functional groups of alkyd and shell material were observed using ATR FTIR. DSC analysis shows melting peaks and glass transition of PUF and alkyd in the microcapsules. TGA analysis indicated that the shell of the microcapsules was thermally stable up to 250 degC. FESEM examination showed that the microcapsules had rough outer surface.