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US 10,889,674 B2Granted
Method of preparing a grafted copolymer of lignin and/or cellulose
AssigneeBiofiber Tech Sweden AB
InventorEric Yijing Zhang
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Abstract
The present invention relates to a method of preparing grafted copolymers of lignin and/or cellulose, comprising the generation of macroradicals in situ by mechanical impact on the backbone of said lignin and/or cellulose of said lignin and/or cellulose containing material and grafting monomers and/or polymers to said backbone. Furthermore, the present invention relates to the grafted copolymers obtainable by said method, composite materials comprising said copolymers as well as to uses thereof.
Claims16
A method of preparing a grafted copolymer of lignin and/or cellulose, wherein said method comprises the steps of:
- subjecting a lignin and/or cellulose containing material selected from the group consisting of wood chips and pulp, in an oxygen reduced environment to a redox initiator,
- exposing said lignin and/or cellulose containing material to mechanical impact, and
- subjecting said lignin and/or cellulose containing material to monomers and/or polymers before, during and/or immediately after exposure to mechanical impact,
- wherein macroradicals are generated in situ by mechanical impact on the backbone of the lignin and/or cellulose of said lignin and/or cellulose containing material, and
- wherein the monomers and/or polymers are grafted to the backbone of said lignin and/or cellulose.
2 more elements
Dependencies are inferred from the claim text.