Stretchable, degradable and self-healing polymers through a combination of imine bonds and metal coordination
AssigneeUniversity of Windsor
InventorsMohammed Jalal Ahamed, Simon Rondeau-Gagne, Julia Pignanelli
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Abstract
In a preferred embodiment, there is provided a self-healing polymer composition preferably for use in manufacturing a dielectric layer of a capacitive pressure sensor, and which comprises a central atom and a polymer having a main chain and one or more terminal moieties coupled to the main chain, wherein said one or more terminal moieties are selected to operate as ligands to form a coordination complex with the central atom, and preferably, the ligands and the central atom are selected to form the coordination complex after being subject to an external force sufficient to remove coordinate covalent bonds therebetween.
Claims22
A polymer composition comprising a central atom or ion and a polymer having a main chain and one or more terminal moieties coupled to the main chain, wherein said one or more terminal moieties are selected to operate as ligands to form a coordination complex with the central atom or ion, each said terminal moiety having structural formula (II):
- wherein MC is the main chain, L is alkylene selected from the group consisting of methylene, ethylene, n-propylene, isopropylene and butylene, Z is a carbon atom or a nitrogen atom, X is 0 or 1, and R1 to R4 are independently of each other hydrogen, halo, hydroxyl, amino, alkoxy, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, carbonyl, carboxyl or cyano, each of which is optionally substituted, wherein R1 and R2, together with the carbon atoms bonded thereto, R2 and R3, together with the carbon atom and the nitrogen atom bonded thereto, and/or R1 and R4, together with the carbon atom and the nitrogen atom bonded thereto, may form unsubstituted or substituted cycloalkyl, heterocycloalkyl, aryl or heteroaryl, and wherein if X is 0, then R4 is absent.
A method of preparing a self-healing polymer composition, the method comprising contacting a polymer and a central atom or ion, the polymer having a main chain and a plurality of terminal moieties coupled to the main chain, and forming a coordination complex with the central atom or ion and said terminal moieties operating as ligands, wherein each said terminal moiety has one of the following structural formulas:
- wherein MC is the main chain, L is a bond or a linker selected from the group consisting of methylene, ethylene, n-propylene, isopropylene and butylene, and one or more of the carbon atoms and the nitrogen atoms in the structural formulas are optionally substituted.
Dependencies are inferred from the claim text.