Side-chain-functionalized polyhydroxyalkanoate materials
AssigneeInternational Business Machines Corporation
InventorsEric J. Campbell, Sarah K. Czaplewski, Brandon M. Kobilka, Joseph Kuczynski, Jason T. Wertz
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Abstract
A process of forming a side-chain-functionalized polyhydroxyalkanoate (PHA) material is disclosed. The process includes forming a PHA material having a hydroxyl-terminated side-chain. The process also includes utilizing the PHA material having the hydroxyl-terminated side-chain to form a side-chain-functionalized PHA material having a side-chain with a terminal cross-linkable functional group, for example, sulfhydryl group, in order to form reversibly cross-linked PHA material.
Claims3
A process of forming a reversibly cross-linked polyhydroxyalkanoate (PHA) material, the process comprising:
- forming, from a PHA material having a hydroxyl-terminated side-chain, a first functionalized PHA material having a side-chain with a terminal sulfhydryl group,
- wherein forming the first functionalized PHA material includes chemically reacting the PHA material having the hydroxyl-terminated side-chain with 1,4-phenylenedimethanethiol;
- and
- initiating a reversible chemical reaction between the terminal sulfhydryl group of the first functionalized PHA material and a second terminal sulfhydryl group of a second functionalized PHA material to form a disulfide linkage that reversibly cross-links the first functionalized PHA material to the second functionalized PHA material.
A process of forming a reversibly cross-linked polyhydroxyalkanoate (PHA) material, the process comprising:
- forming, from a PHA material having a hydroxyl-terminated side-chain, a first functionalized PHA material having a side-chain with a terminal sulfhydryl group,
- wherein forming the first functionalized PHA material includes chemically reacting the PHA material having the hydroxyl-terminated side-chain with 1,4-phenylenediethanethiol;
- and
- initiating a reversible chemical reaction between the terminal sulfhydryl group of the first functionalized PHA material and a second terminal sulfhydryl group of a second functionalized PHA material to form a disulfide linkage that reversibly cross-links the first functionalized PHA material to the second functionalized PHA material.
A process of forming a reversibly cross-linked polyhydroxyalkanoate (PHA) material, the process comprising:
- forming, from a PHA material having a hydroxyl-terminated side-chain, a first functionalized PHA material having a side-chain with a terminal sulfhydryl group,
- wherein forming the first functionalized PHA material includes chemically reacting the PHA material having the hydroxyl-terminated side-chain with 1,4-phenylenedipropanethiol;
- and
- initiating a reversible chemical reaction between the terminal sulfhydryl group of the first functionalized PHA material and a second terminal sulfhydryl group of a second functionalized PHA material to form a disulfide linkage that reversibly cross-links the first functionalized PHA material to the second functionalized PHA material.
Dependencies are inferred from the claim text.