Muhamad Norshafiq Ismail, Najihah Rafidi, Raina Jama Awale and Fathilah Ali 2017. Preparation and Characterization of Polylacticacid based Polyurethane for Environmental Friendly Packaging Materials . Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 38, 1 (Oct. 2017), 16–21.