Strain-hardened isotactic polymers and uses thereof
AssigneeCornell University
InventorsGeoffrey W. Coates, Bryce M. Lipinski, Lilliana S. Morris
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Abstract
Provided are strain-hardened polymers. The polymers may include a plurality of polyether units (e.g., isotactic polypropylene oxide units) and one or more crystalline domains. The strain-hardened polymers may have a higher initial engineering yield stress and/or enthalpy of fusion than native polymer (e.g., polypropylene oxide that has not been strain-hardened). The strain-hardened polymers may be made by catalytic methods using bimetallic catalysts. Also provided are uses of the strain-hardened polymers.
Claims17
A strain-hardened polymer comprising a plurality of isotactic polypropylene oxide units and one or more crystalline domains, wherein the molecular weight (Mn) of the strain-hardened polymer is 5,000 to 500,000 g/mol and the polymer exhibits an initial engineering yield stress of 15 MPa or greater.
Dependencies are inferred from the claim text.