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Transforming technical lignins to structurally defined star-copolymers under ambient conditions
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Wallenberg Wood Science Center.
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi, Ytbehandlingsteknik. KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Wallenberg Wood Science Center.ORCID-id: 0000-0003-4226-8593
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi.ORCID-id: 0000-0002-8614-6291
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi.ORCID-id: 0000-0003-3201-5138
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2019 (engelsk)Inngår i: Green Chemistry, ISSN 1463-9262, E-ISSN 1463-9270, Vol. 21, nr 9, s. 2478-2486Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Transforming biomass derived components to materials with controlled and predictable properties is a major challenge. Current work describes the controlled synthesis of starcopolymers with functional and degradable arms from the Lignoboost (R) process. Macromolecular control is achieved by combining lignin fractionation and characterization with ring-opening copolymerization (ROCP). The cyclic monomers used are epsilon-caprolactone (epsilon CL) and a functional carbonate monomer, 2-allyloxymethyl-2-ethyltrimethylene carbonate (AOMEC). The synthesis is performed at ambient temperature, under bulk conditions, in an open flask, and the graft composition and allyl functionality distribution are controlled by the copolymerization kinetics. Emphasis is placed on understanding the initiation efficiency, structural changes to the lignin backbone and the final macromolecular architecture. The present approach provides a green, scalable and cost effective protocol to create well-defined functional macromolecules from technical lignins.

sted, utgiver, år, opplag, sider
2019. Vol. 21, nr 9, s. 2478-2486
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URN: urn:nbn:se:kth:diva-252978DOI: 10.1039/c9gc00835gISI: 000468627300033Scopus ID: 2-s2.0-85065578205OAI: oai:DiVA.org:kth-252978DiVA, id: diva2:1342770
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QC 20190814

Tilgjengelig fra: 2019-08-14 Laget: 2019-08-14 Sist oppdatert: 2019-08-14bibliografisk kontrollert

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