Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 128, Issue 6, Pages 3576-3585Publisher
WILEY
DOI: 10.1002/app.38573
Keywords
morphology; blends; extrusion
Categories
Funding
- National Nature Science Foundation of China [10872071, 50973035, 50903033]
- Fundamental Research Funds for the Central Universities [2011ZM0063]
- National Key Technology R&D Program of China [2009BAI84B05, 2009BAI84B06]
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This study reports the morphology development of polymer blends in a novel vane extruder in which polymer mainly suffers from elongational deformation field. Rapidly cooled samples of polypropylene/polystyrene (PP/PS) are collected in the vane extruder after stable extrusion. Furthermore, the shape and size of the dispersed phase from initial to final stages are analyzed. In addition, in order to compare the final size of the dispersed phase, different immiscible blends, including polypropylene/polyamide and PP/PS, are prepared by vane extruder and twin-screw extruder, respectively. The results show that the dispersed phase is made to change rapidly from stretched striations to droplets under the strong elongational deformation field in the vane extruder. Furthermore, the droplet size of dispersed phase of blends prepared by vane extruder is much smaller than that prepared by twin-screw extruder, indicating that the vane extruder is more efficient in mixing for immiscible polymer blends. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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