Interaction of Nano-Sized Materials With Polymer Chains in Polymer-Nanocomposite Thin Films-An AFM Perspective

Nanocomposite thin films were prepared with polyurethane as a matrix and organically modified clay as a filler. The interfacial interaction between the exfoliated clay nanoplatelets and the polymeric chains has been investigated by using Atomic Force Microscopy (AFM). The nanoclay platelets show a p...

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Bibliographic Details
Main Authors: Verma, Gaurav, Kaushik, Anupama, Ghosh, Anup K.
Format: Conference Proceeding
Language:English
Subjects:
ATOMIC FORCE MICROSCOPY
CARBAMATES
CARBONIC ACID DERIVATIVES
CARBOXYLIC ACID SALTS
CLAYS
COATINGS
COMPOSITE MATERIALS
DEPOSITION
FILLERS
HYDROGEN COMPOUNDS
HYDROXIDES
ISOCYANATES
MATERIALS
MATERIALS SCIENCE
MATRIX MATERIALS
MICROSCOPY
MINERALS
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
POLYURETHANES
SILICATE MINERALS
SPRAY COATING
SPRAYED COATINGS
SURFACE COATING
SYNTHETIC MATERIALS
THIN FILMS
URETHANE
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Description
Summary:Nanocomposite thin films were prepared with polyurethane as a matrix and organically modified clay as a filler. The interfacial interaction between the exfoliated clay nanoplatelets and the polymeric chains has been investigated by using Atomic Force Microscopy (AFM). The nanoclay platelets show a preferential association with the hard domains of polyurethane matrix on the surface of the thin films. The pendant hydroxyl group on the nanoplatelets attract the isocyanate of the polyisocyanate and a urethane group is formed. This leads to the 'clouding' and 'entwining' of the nanoplatelets by the hard segmental chains. This is the first visual evidence of nanomaterial filler and polymer matrix interaction and it could open up a spectrum of novel property achievements in nanocomposite thin films. Also the understanding of this interaction can lead to more controlled architecture of nanocomposites.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3653767