Synthesis and Characteristic of Polyurethane Modified Silicone
Synthesis and Characteristic of Polyurethane Modified Siliconepolyurethane modified silicone (PUMS);polydimethylsiloxane (PDMS);polypropyleneglycol (PPG);2,4-toluenediisocyanate (TDI);Polyurethane modified silicone (PUMS) was synthesized from various molecular weights of polydimethylsiloxane (PDMS 2000, PDMS 6000, PDMS 20000), polypropyleneglycol with molecular weight of 3000 g/mol (PPG 3000) and 2,4-toluenediisocyanate (TDI) under tin catalyst. Their structures were confirmed by the measurement of FT-IR and $^1H-NMR$, and the thermal properties were studied from DSC and TGA.