Invention Grant
- Patent Title: Surface-functionalised polymeric object and method of its production
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Application No.: US16623256Application Date: 2018-09-26
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Publication No.: US11618980B2Publication Date: 2023-04-04
- Inventor: Andreas Lendlein , Axel Thomas Neffe , Paul Jakob Hommes-Schattmann , Quanchao Zhang
- Applicant: Helmholtz-Zentrum Geesthacht Zentrum Fuer Material-Und Kuestenforschung GmbH
- Applicant Address: DE Geesthacht
- Assignee: Helmholtz-Zentrum Geesthacht Zentrum Fuer Material-Und Kuestenforschung GmbH
- Current Assignee: Helmholtz-Zentrum Geesthacht Zentrum Fuer Material-Und Kuestenforschung GmbH
- Current Assignee Address: DE Geesthacht
- Agency: Fox Rothschild LLP
- Priority: EP17193860 20170928
- International Application: PCT/EP2018/076146 WO 20180926
- International Announcement: WO2019/063627 WO 20190404
- Main IPC: D01F8/14
- IPC: D01F8/14 ; C08J7/04 ; D01D5/00

Abstract:
The invention provides a surface-functionalised polymeric object (10), comprising: a bulk material (11) comprising a copolymer containing constitution units derived from a first comonomer and constitution units derived from a second comonomer, the first comonomer being selected from L-lactide and D-lactide and forming sequences of oligo(L-lactide) or oligo(D-lactide) in the copolymer the copolymer having a substantially random, partially blocky structure with a dyad ratio of (lactide-lactide)-dyads to (lactide-second comonomer)-dyads of at least 2.0:1; and a surface layer (12) disposed on a surface of the bulk material (11), the surface layer (12) comprising a functionalising species and at least one chain of poly(D-lactide) or of poly(L-lactide) covalently bound to the functionalising species, and at least one chain being different from the oligo(L-lactide) sequences or oligo(D-lactide) sequences contained in the copolymer; wherein the surface layer (12) is attached to the bulk material (11) via stereocomplexes formed between the poly(D-lactide) chain(s) of the functionalising species and the oligo(L-lactide) sequences contained in the copolymer or via stereocomplexes formed between the poly(L-lactide) chain(s) of the functionalising species and the oligo(D-lactide) sequences contained in the copolymer, respectively. The surface-functionalised polymeric object can be produced in a one-step procedure by coaxial electrospinning.
Public/Granted literature
- US20200172688A1 Surface-functionalised polymeric object and method of its production Public/Granted day:2020-06-04
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