Surface-Initiated Controlled Radical Polymerization Approach to in Situ Cross-Link Cellulose Nanofibrils with Inorganic Nanoparticles
Artikel i vetenskaplig tidskrift, 2020

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.

Författare

Julien R.G. Navarro

Universität Hamburg

Jowan Rostami

Kungliga Tekniska Högskolan (KTH)

Astrid Ahlinder

Kungliga Tekniska Högskolan (KTH)

J. Benedikt Mietner

Universität Hamburg

Diana Bernin

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk apparatteknik

Bodo Saake

Universität Hamburg

Ulrica Edlund

Kungliga Tekniska Högskolan (KTH)

Biomacromolecules

1525-7797 (ISSN) 1526-4602 (eISSN)

Vol. 21 5 1952-1961

Ämneskategorier

Polymerteknologi

DOI

10.1021/acs.biomac.0c00210

PubMed

32223221

Mer information

Senast uppdaterat

2020-07-01