Extrusion of polysaccharide nanocrystal reinforced polymer nanocomposites through compatibilization with poly(ethylene oxide).
Polysaccharide nanocrystals with a rodlike shape but with different dimensions and specific surface area were prepared from cotton and capim dourado cellulose, and with a plateletlike morphology from waxy maize starch granules. The rheological behavior of aqueous solutions of poly(ethylene oxide) (PEO) with different molecular weights when adding these nanoparticles was investigated evidencing specific interactions between PEO chains and nanocrystals. Because PEO also bears hydrophobic moieties, it was employed as a compatibilizing agent for the melt processing of polymer nanocomposites. The freeze-dried mixtures were used to prepare nanocomposite materials with a low density polyethylene matrix by extrusion. The thermal and mechanical behavior of ensuing nanocomposites was studied.
The International School of Paper, Print Media and Biomaterials (Pagora), Grenoble Institute of Technology (Grenoble INP) , CS10065, 38402 Saint Martin d'Hères Cedex, France.
Mariana
M
Pereda
Nadia
N
El Kissi
Alain
A
Dufresne
D002482:Cellulose / Q000737:chemistry; D057927:Hydrophobic and Hydrophilic Interactions; D053761:Nanocomposites; D053758:Nanoparticles / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000138:chemical synthesis / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D011134:Polysaccharides / Q000138:chemical synthesis / Q000737:chemistry*; D012212:Rheology; D013213:Starch / Q000737:chemistry; D003313:Zea mays / Q000737:chemistry
D011108:Polymers; D011134:Polysaccharides; D011092:Polyethylene Glycols; D002482:Cellulose; D013213:Starch