## Abstract Superfine wool powder was blended and extruded with poly(propylene) (PP) to produce blend pellets, and the extruded pellets were hotβpressed into a blend film. SEM photographs show that the powder could be uniformly incorporated with PP after extrusion. FTβIR spectra shows that no subst
Preparation and characterization of blend membranes of polyurethane and superfine chitosan powder
β Scribed by Dan-Ying Zuo; Yong-Zhen Tao; Yu-Bo Chen; Wei-Lin Xu
- Book ID
- 106001535
- Publisher
- Springer
- Year
- 2009
- Tongue
- English
- Weight
- 451 KB
- Volume
- 62
- Category
- Article
- ISSN
- 0170-0839
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Polyurethane (ether type) and sulfonated polysulfone (sodium salt form) in the presence of polyethylene glycol 600 were blended in various compositions using N,N'-dimethylformamide as solvent and used for preparing ultrafiltration membranes by the phase inversion technique. Polymer blend composition
## Abstract Superfine down powder was produced from down fiber after it was cut into short pieces and ground on a purposeβbuilt machine. Scanning electron microscopy photographs showed that the down fiber was ground into particles with some fiber fragments and a large amount of rodβshaped ultrafine