Processing-structure-property relationships in solid-state shear pulverization: Parametric study of specific energy

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.

Processing-Structure-Property Relationships in Solid-State Shear Pulverization: Parametric Study of specific energy

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.

Predictors of Attitudes toward Lesbians and Transgender Women in Relationships on a College Campus

The purpose of this study was to gain a better understanding of the attitudes which perpetuate intolerance toward LGBT individuals, and to recognize, in particular, the unique attitudes transpeople face as a minority in the nation and even in the LGBT community. This research contributes to the bodies of research concerning the interrelatedness of intrinsic religiosity, political conservatism, sexism, the rape myth, lack of effective legal protection, and the intolerance of gender non-conformists. I have identified distinctions between attitudes on the part of both women and men, as well as toward different gender non-conformists. I have also taken research as a whole further by assessing the predictors of attitudes toward specific members of the LGBT community in public relationships. The implications of these findings are potentially as far reaching as to have an impact on policies effecting healthcare, education, anti-discrimination and employer rights legislation, on both local and national levels.