Protective polymeric materials and related devices
AssigneeMassachusetts Institute of Technology
InventorsNicholas T. Tsui, Edwin L. Thomas, Timothy M. Swager
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Abstract
The present invention relates to polymeric materials having enhanced properties. In some cases, the materials may comprise polymers having shape-persistent portions which may enhance the mechanical properties of the material. The materials may exhibit higher stiffness or strength and ductility values, resulting in higher energy absorption and enhanced protection, as well as, longer lifetimes for product usage. In some cases, the materials may be optically transparent and lightweight, making them suitable for various applications including protective materials.
Claims21
A composition, comprising:
- a polymer comprising a shape-persistent portion, wherein the shape-persistent portion has a molecular weight of at least 15 g/mol, and at least one sulfone or urethane group,
- wherein the polymer has a mechanical strength at least 5% greater than the mechanical strength of an essentially identical polymer lacking the shape-persistent portion, under essentially identical conditions.
A composition, comprising:
- a polysulfone or polyurethane comprising a shape-persistent portion, wherein the shape-persistent portion has a molecular weight of at least 15 g/mol and the polysulfone or polyurethane comprises at least 1 wt % of the shape-persistent portion,
- wherein the polysulfone or polyurethane has a mechanical strength at least 5% greater than a mechanical strength of an essentially identical polysulfone or polyurethane, respectively, lacking the shape-persistent molecule, under essentially identical conditions.
A composition, comprising:
- a polymer comprising the structure,
- wherein X comprises a sulfone, or urethane;
- R1 and R2 can be the same or different and are hydrogen, alkyl, heteroalkyl, aryl, heteroaryl, or acyl, optionally substituted, or, R1 and R2 are joined together to form a bicyclic ring system having aromatic or non-aromatic groups, optionally substituted;
- and, R3 and R4 are joined together to form a bicyclic ring system having aromatic or non-aromatic groups, optionally substituted.
Dependencies are inferred from the claim text.