The acyclic diene metathesis polymerization (ADMET) of 1,3-di-10-undecenoxy-2-propanol, a castor oil based diene, is reported. 10-Undecenol was used as renewable comonomer to end-cap polymer chains and limit the molecular weight. The polyols obtained in this way were reacted with 4,4 0 -methylenebis(phenylisocyanate) (MDI) to yield a series of amorphous and semicrystalline polyurethane networks. The thermal stability and the thermomechanical and mechanical properties of these thermosets have been studied and showed good shape memory properties for the semicrystalline polymer. V C 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: [518][519][520][521][522][523][524][525] 2011
The synthesis of branched polyols from glyceryl triundec‐10‐enoate by acyclic triene metathesis polymerization (ATMET) is reported. 10‐Undecenol is used as a monofunctional comonomer to end‐cap polymer chains, functionalize the periphery of the resulting branched materials, and to control the molecular weight. The thus obtained castor oil derived polyols are reacted with 4,4′‐methylenebis(phenylisocyanate) (MDI) to yield a series of semicrystalline polyurethane networks. The investigation of the thermal stability and the thermomechanical and mechanical properties of these thermosets revealed good shape memory properties. magnified image
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