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Surface-Initiated Controlled Radical Polymerization Approach to in Situ Cross-Link Cellulose Nanofibrils with Inorganic Nanoparticles
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi, Fiberteknologi.ORCID-id: 0000-0002-2489-8439
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi, Polymerteknologi.ORCID-id: 0000-0002-6877-7858
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2020 (engelsk)Inngår i: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 21, nr 5, s. 1952-1961Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper investigates a strategy to convert hydrophilic cellulose nanofibrils (CNF) into a hydrophobic highly cross-linked network made of cellulose nanofibrils and inorganic nanoparticles. First, the cellulose nanofibrils were chemically modified through an esterification reaction to produce a nanocellulose-based macroinitiator. Barium titanate (BaTiO3, BTO) nanoparticles were surface-modified by introducing a specific monomer on their outer-shell surface. Finally, we studied the ability of the nanocellulose-based macroinitiator to initiate a single electron transfer living radical polymerization of stearyl acrylate (SA) in the presence of the surface-modified nanoparticles. The BTO nanoparticles will transfer new properties to the nanocellulose network and act as a cross-linking agent between the nanocellulose fibrils, while the monomer (SA) directly influences the hydrophilic-lipophilic balance. The pristine CNF and the nanoparticle cross-linked CNF are characterized by FTIR, SEM, and solid-state 13C NMR. Rheological and dynamic mechanical analyses revealed a high dregee of cross-linking.

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American Chemical Society (ACS), 2020. Vol. 21, nr 5, s. 1952-1961
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URN: urn:nbn:se:kth:diva-276390DOI: 10.1021/acs.biomac.0c00210ISI: 000535186300029PubMedID: 32223221Scopus ID: 2-s2.0-85084721299OAI: oai:DiVA.org:kth-276390DiVA, id: diva2:1441411
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QC 20200616

Tilgjengelig fra: 2020-06-16 Laget: 2020-06-16 Sist oppdatert: 2022-06-26bibliografisk kontrollert

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Rostami, JowanAhlinder, AstridEdlund, Ulrica

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