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Using Hansen solubility parameters to predict the dispersion of nano-particles in polymeric films

Sofie Gårdebjer (Institutionen för kemi och kemiteknik, Farmaceutisk teknologi ; SuMo Biomaterials) ; M. Andersson ; J. Engstrom ; P. Restorp ; M. Persson ; Anette Larsson (Institutionen för kemi och kemiteknik, Farmaceutisk teknologi ; SuMo Biomaterials)
Polymer Chemistry (1759-9954). Vol. 7 (2016), 9, p. 1756-1764.
[Artikel, refereegranskad vetenskaplig]

We suggest a rough and straightforward method to predict the dispersibility of modified cellulose nanocrystals (CNC) in nanocomposites using Hansen solubility parameters (HSP). The surface of CNC was modified using a novel approach where Y-shaped substituents with two different carbon chain lengths were attached to the surface. Approximate HSP values were calculated for the modified CNC, and dispersions of unmodified and modified CNC in solvents with varying HSPs were studied. The best dispersibility was observed in dichloromethane, when the CNC surface was modified with longer carbon chains. Dichloromethane has HSP similar to low-density polyethylene (LDPE). Nanocomposites with both unmodified and modified CNC were produced. The materials with modified CNC showed increased adhesion between the filler and the matrix, followed by a decreased water permeability compared to unmodified CNC, suggesting a better dispersibility of modified CNC in LDPE and confirming the usefulness of this approach.

Nyckelord: Ring-Opening Polymerization, Cellulose, Nanocomposites, Nanotubes, Extrusion



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Denna post skapades 2016-03-23. Senast ändrad 2016-05-04.
CPL Pubid: 233638

 

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