Upgrading Sustainable Polyurethane Foam Based on Greener Polyols: Succinic-Based Polyol and Mannich-Based Polyol

Biobased Polyurethane from Palm Kernel Oil-Based Polyol

Synthesis of Transesterified Palm Olein-Based Polyol and Rigid Polyurethanes from this Polyol

Transesterification of palm olein with glycerol can increase the functionality by introducing additional hydroxyl groups to the triglyceride structure, an advantage compared to using palm olein directly as feedstock for producing palm-based polyol. The objective of this study was to synthesize transesterified palm olein-based polyol via a three-step reaction: (1) transesterification of palm ole...

Preparation and Characterization of Rosin-based Waterborne Polyurethane from Maleopimaric Acid Polyester Polyol

Maleopimaric acid (MPA) can be used for polymer materials as a rosin derivative. In this study, rosin-based waterborne polyurethane (RWPU) was prepared with different content of maleopimaric acid polyester polyol (MAPP), which was synthesized from MPA. The properties of RWPU were studied by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and differential scann...

Development of Low-VOC Polyurethane Foam Formulations for the Automotive Market based on Catalytically Active Polyols

After the elimination of Chlorofluorocarbons as auxiliary blowing agents, the reduction of the amount of Volatile Organic Compound (VOC’s) emissions from car interior components is one of most recent requirements of the Automotive Industry. Polyurethane foams, and more specifically the tertiary amines used for their production, have been under scrutiny. One of the recent research programs of Th...

mortality forecasting based on lee-carter model

over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...