Abstract
Tetrahydrofuran was polymerised with boron trifuoride etherate (BF3·Et2O) and terminated with hydrobromic acid to give the bromide-terminated prepolymer, which, on further reaction with ketal derivative of glycerol and subsequent hydrolysis, gave tetrahydroxyl-terminated polytetrahydrofuran. The prepolymer was chain-extended with tolylenediisocyanate and hexamethylenediisocyanate in six different solvents to give cross-linked polyurethane. These polymers were characterised by infrared, viscosity and thermogravimetric analysis. The glass-transition temperature, the tensile strength at break, and elongation were also determined.
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Rajendran, G., Mahadevan, V. & Srinivasan, M. Synthesis of Low-Temperature Stable Polymers. I. Chain-Extended Poly(tetrahydrofuran–urethane). Polym J 13, 99–103 (1981). https://doi.org/10.1295/polymj.13.99
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DOI: https://doi.org/10.1295/polymj.13.99
