New hybrid system: Poly(ethylene glycol) hydrogel with covalently bonded pegylated nanotubes

Hydrogels containing carbon nanotubes (CNTs) are expected to be promising conjugates because they might show a synergic combination of properties from both materials. Most of the hybrid materials containing CNTs only entrap them physically, and the covalent attachment has not been properly addressed...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2011-04, Vol.120 (1), p.124-132
Main Authors: Saez-Martinez, Virginia, Garcia-Gallastegui, Ainara, Vera, Carolina, Olalde, Beatriz, Madarieta, Iratxe, Obieta, Isabel, Garagorri, Nerea
Format: Article
Language:English
Subjects:
Applied sciences
Bonding
Composites
Covalence
Covalent bonds
Exact sciences and technology
Forms of application and semi-finished materials
Glycols
Hydrogels
Materials science
mechanical properties
nanocomposites
Polymer industry, paints, wood
Polymers
Prepolymers
Single wall carbon nanotubes
Swelling
Technology of polymers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Hydrogels containing carbon nanotubes (CNTs) are expected to be promising conjugates because they might show a synergic combination of properties from both materials. Most of the hybrid materials containing CNTs only entrap them physically, and the covalent attachment has not been properly addressed yet. In this study, single-walled carbon nanotubes (SWNTs) were successfully incorporated into a poly(ethylene glycol) (PEG) hydrogel by covalent bonds to form a hybrid material. For this purpose, SWNTs were functionalized with poly(ethylene glycol) methacrylate (PEGMA) to obtain water-soluble pegylated SWNTs (SWNT-PEGMA). These functionalized SWNTs were covalently bonded through their PEG moieties to a PEG hydrogel. The hybrid network was obtained from the crosslinking reaction of poly(ethylene glycol) diacrylate prepolymer and the SWNT-PEGMA by dual photo-UV and thermal initiations. The mechanical and swelling properties of the new hybrid material were studied. In addition, the material and lixiviates were analyzed to elucidate any kind of SWNT release and to evaluate a possible in vitro cytotoxic effect.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.33095