Synthesis and properties of silanized waterborne polyurethane/graphene nanocomposites

A series of silanized waterborne polyurethane (WPU)/graphene oxide (GO) chemical hybrids were synthesized from polycaprolactone diol, isophorone diisocyanate, dimethylol butanoic acid, and (3-aminopropyl) triethoxysilane with GO as multifunctional crosslink as well as reinforcing filler. With the ad...

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Bibliographic Details
Published in:Colloid and polymer science 2014-01, Vol.292 (1), p.51-58
Main Authors: Kim, Y. J., Kim, B. K.
Format: Article
Language:English
Subjects:
Agglomeration
Applied sciences
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Composites
Contact angle
Crosslinking
Diisocyanates
Dispersions
Exact sciences and technology
Food Science
Forms of application and semi-finished materials
Graphene
Nanotechnology and Microengineering
Original Contribution
Physical Chemistry
Polymer industry, paints, wood
Polymer Sciences
Polyurethane resins
Soft and Granular Matter
Technology of polymers
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Summary:A series of silanized waterborne polyurethane (WPU)/graphene oxide (GO) chemical hybrids were synthesized from polycaprolactone diol, isophorone diisocyanate, dimethylol butanoic acid, and (3-aminopropyl) triethoxysilane with GO as multifunctional crosslink as well as reinforcing filler. With the addition of GO, dispersion size greatly decreased due to the increased water phase viscosity, while it increased after chain extension reaction due to the migration of GO into the PU particles. The GO covalently bonded to WPU via the sol–gel type reaction augmented contact angle, glass transition temperature (Tg), hardness, and Young’s modulus of the cast film up to 1 %. However, the effects were less pronounced at high content (1.5 %) due to the agglomeration of GO particles.
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-013-3054-2