title: Polymer grafting onto starch nanocrystals.
abstract: Monocrystalline starch nanoparticles were successfully grafted with poly(tetrahydrofuran), poly(caprolactone), and poly(ethylene glycol) monobutyl ether chains using toluene 2,4-diisocyanate as a linking agent. Surface grafting was confirmed using Fourier transform infrared and X-ray photoelectron spectroscopies, differential scanning calorimetry, elemental analysis, and contact angle measurements. Transmission electron microscopy observations of modified starch nanocrystals showed either the individualization of nanoparticles or the formation of a film, depending on the polymer used. It was shown that grafting efficiency decreased with the length of the polymeric chains, as expected. The resulting modified nanoparticles can find applications in the field of co-continuous nanocomposite materials.
authors: Ecole Française de Papeterie et des Industries Graphiques de Grenoble, Institut National Polytechnique de Grenoble, BP 65, 38402 Saint Martin d'Hères Cedex, France.
authors: Marianne
authors: M
authors: Labet
authors: Wim
authors: W
authors: Thielemans
authors: Alain
authors: A
authors: Dufresne
mesh_terms: D000687:Amylopectin / Q000737:chemistry; D002072:Butylene Glycols / Q000737:chemistry*; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D011091:Polyesters / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D013057:Spectrum Analysis; D013213:Starch / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002072:Butylene Glycols; D011091:Polyesters; D011108:Polymers; C524502:poly(ethylene glycol) monobutyl ether; C524501:poly(tetrahydrofuran); C016240:polycaprolactone; D011092:Polyethylene Glycols; D013213:Starch; D000687:Amylopectin