Surface-functionalised polymeric object and method of its production

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United States of America Patent

PATENT NO 11618980
APP PUB NO 20200172688A1
SERIAL NO

16623256

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
HELMHOLTZ-ZENTRUM HEREON GMBHMAX-PLANCK-STRASSE 1 GEESTHACHT 21502

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hommes-Schattmann, Paul Jakob Berlin, DE 2 1
Lendlein, Andreas Berlin, DE 54 2915
Neffe, Axel Thomas Berlin, DE 6 15
Zhang, Quanchao Jiangxi, CN 3 1

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