Processing-structure-property relationships in solid-state shear pulverization: Parametric study of specific energy
Publication Date
2012
Description
Solid-state shear pulverization (SSSP) is a unique processing technique for mechanochemical modification of polymers, compatibilization of polymer blends, and exfoliation and dispersion of fillers in polymer nanocomposites. A systematic parametric study of the SSSP technique is conducted to elucidate the detailed mechanism of the process and establish the basis for a range of current and future operation scenarios. Using neat, single component polypropylene (PP) as the model material, we varied machine type, screw design, and feed rate to achieve a range of shear and compression applied to the material, which can be quantified through specific energy input (Ep). As a universal processing variable, Ep reflects the level of chain scission occurring in the material, which correlates well to the extent of the physical property changes of the processed PP. Additionally, we compared the operating cost estimates of SSSP and conventional twin screw extrusion to determine the practical viability of SSSP.
Journal
Polymer Engineering and Science
Volume
52
Issue
7
First Page
1555
Last Page
1564
Department
Chemical Engineering
Link to Published Version
Recommended Citation
Brunner, Philip J.; Clark, Joshua T.; Torkelson, John M.; and Wakabayashi, Katsuyuki. "Processing-structure-property relationships in solid-state shear pulverization: Parametric study of specific energy." Polymer Engineering and Science (2012) : 1555-1564.