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

Content Provider	Springer Nature Link
Author	Li, Zhuo Renneckar, Scott Barone, Justin R.
Copyright Year	2009
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.
Starting Page	57
Ending Page	68
Page Count	12
File Format	PDF
ISSN	09690239
Journal	Cellulose
Volume Number	17
Issue Number	1
e-ISSN	1572882X
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-10-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanocomposite Enzymatic polymerization Nanocellulose Morphology Polymer Sciences Organic Chemistry Physical Chemistry Bioorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Polymers and Plastics

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