Polyurethane foams (PUF) are synthesized by polyaddition polymerization of difunctional isocyanates and multifunctional alcohols (polyols). The PUF properties are primarily depended on raw materials. In this study, the properties of PUF synthesized from aromatic diisocyanate were compared with PUF synthesized from aliphatic diisocyanate. The effects of molar ratios between hydrophilic (PPG) and hydrophobic (PCL) polyols were also investigated. The FT-IR spectroscopy confirms that urethane linkage took place in their chain. From SEM images, the increasing of PPG contents cause the decreasing of the cell forming ability especially at 30% and 50% PPG. In addition, the cell size and the number of cell also affect by the isocyanate types. Key words: Biodegradable polyurethane foam, Diisocyanate, polypropylene glycol.

Keywords: Biodegradable polyurethane foam, Diisocyanate, polypropylene glycol.