Journal
CELLULOSE
Volume 20, Issue 2, Pages 751-760Publisher
SPRINGER
DOI: 10.1007/s10570-013-9874-x
Keywords
Nanoparticles; Cellulose; Cellulose ester; Cellulose acetate; DLS; FE-SEM; Emulsification solvent evaporation; Solvent displacement
Funding
- Thuringian Ministry for Education, Science and Culture [B514-09051]
- Thuringian development bank [2008 FE 9183]
- Finnish Funding Agency for Technology and Innovation (Tekes)
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Nano-scaled particles were obtained from two different cellulose acetates, cellulose acetate propionate, and cellulose acetate butyrate using the emulsification solvent evaporation procedure and the low energy methods of solvent displacement (dialysis and controlled precipitation). The relationship between the formulation parameters and the particle properties were evaluated in case of the emulsification-evaporation technique. For the solvent displacement procedures, the influence of the formulation parameters, and the intrinsic polymer properties like the hydrophilic-hydrophobic balance was evaluated. Comparing the methods, it could be shown that large amounts of small and uniform nanoparticles can be obtained by the emulsification solvent evaporation procedure. The solvent displacement techniques turned out to be very easy to use and to yield narrowly distributed particles as well.
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