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Cellulose

Erschienen in:

01.02.2010

Nanocomposites prepared by in situ enzymatic polymerization of phenol with TEMPO-oxidized nanocellulose

verfasst von: Zhuo Li, Scott Renneckar, Justin R. Barone

Erschienen in: Cellulose | Ausgabe 1/2010

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Abstract

The objective of this study was to prepare nanocomposites based on polyphenols and nanocellulose fibers using relatively benign processing. To accomplish this, phenol was polymerized using horseradish peroxidase in the presence of TEMPO-oxidized nanocellulose. The polyphenol-nanocellulose composite was insoluble in organic solvents but the individual components were soluble. SEM imaging of fracture surfaces of polyphenol, nanocellulose, and composite indicated brittle failure in polyphenol and nanocellulose but ductile failure in the composite pointing to a potential synergistic effect from the addition of the components. Polyphenol existed as spherical or near-spherical “clusters” that were ca. 10 μm in the absence of nanocellulose and ca. 0.1 μm in the presence of nanocellulose. The observed change in structure corresponded to changes in the thermal stability because the composite was more thermally stable than the components. FT-IR analysis of polyphenol-nanocellulose composites showed physical and chemical interactions between the fiber and matrix. This study is a significant improvement in forming nanocomposites without the intensive processing usually required for dispersion.

Vorheriger Artikel Bending properties and cell wall structure of alkali-treated wood

Nächster Artikel Glucomannan composite films with cellulose nanowhiskers

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Titel: Nanocomposites prepared by in situ enzymatic polymerization of phenol with TEMPO-oxidized nanocellulose
verfasst von: Zhuo Li
Scott Renneckar
Justin R. Barone
Publikationsdatum: 01.02.2010
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 1/2010
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-009-9363-4

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