Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 6 of 6

Full-Text Articles in Life Sciences

Effect Of Particle Size, Coupling Agent And Ddgs Additions On Paulownia Wood Polypropylene Composites, Brent Tisserat, Louis Reifschneider, David A. Grewell, Gowrishankar Srinivasan Sep 2015

Effect Of Particle Size, Coupling Agent And Ddgs Additions On Paulownia Wood Polypropylene Composites, Brent Tisserat, Louis Reifschneider, David A. Grewell, Gowrishankar Srinivasan

Gowrishankar Srinivasan

Studies aimed at improving the tensile, flexural, impact, thermal, and physical characteristics of wood–plastic composites composed of Paulownia wood flour derived from 36-month-old trees blended with polypropylene were conducted. Composites of 25% and 40% w/w of Paulownia wood were produced by twin-screw compounding and injection molding. Composites containing 0–10% by weight of maleated polypropylene were evaluated and an optimum maleated polypropylene concentration determined, i.e., 5%. The particle size distribution of Paulownia wood filler is shown to have an effect on the tensile and flexural properties of the composites. Novel combination composites of dried distiller’s grain ...


Ultrasonic Enhanced Liquefaction And Saccharification Of Corn For Bio-Fuel Production, Samir Kumar Khanal, Melissa T. Montalbo, Johannes Van Leeuwen, Gowrishankar Srinivasan, David A. Grewell Sep 2015

Ultrasonic Enhanced Liquefaction And Saccharification Of Corn For Bio-Fuel Production, Samir Kumar Khanal, Melissa T. Montalbo, Johannes Van Leeuwen, Gowrishankar Srinivasan, David A. Grewell

Gowrishankar Srinivasan

Dry grind corn milling does not reach full efficiency of starch conversion to sugars and subsequently to ethanol because of limitations in the milling process. This paper examines the use of high-power ultrasonics to enhance the release of fermentable sugars from milled dry corn. In this work, 20 kHz ultrasonic energy was used to pretreat corn mash prior to enzymatic conversion of corn starch to glucose in a batch-mode. The ultrasonic amplitude was varied from 0, 191 to 320 µm pp . The corn mash was sonicated for 0 (control), 20 and 40 seconds. Other experimental variables that were studied included ...


Improvement Of Mechanical Properties And Water Stability Of Vegetable Protein Based Plastics, Gowrishankar Srinivasan Sep 2015

Improvement Of Mechanical Properties And Water Stability Of Vegetable Protein Based Plastics, Gowrishankar Srinivasan

Gowrishankar Srinivasan

Bio-renewable bio-degradable plastics are a potential solution to the growing problems of pollution caused by petroleum plastics and dependency on foreign nations for petroleum resources. One possible feed stock for these materials are vegetable proteins, especially from soy bean and corn. These proteins have relatively high molecular weights and have the potential of being processed with standard polymer processing technologies. But some issues that need to be addressed are their water instability (soy protein) and inferior mechanical properties as compared to petroleum derived plastics. In this study, soy protein isolates (SPI) and zein protein was processed with various additives and ...


Effect Of Particle Size, Coupling Agent And Ddgs Additions On Paulownia Wood Polypropylene Composites, Brent Tisserat, Louis Reifschneider, David A. Grewell, Gowrishankar Srinivasan May 2015

Effect Of Particle Size, Coupling Agent And Ddgs Additions On Paulownia Wood Polypropylene Composites, Brent Tisserat, Louis Reifschneider, David A. Grewell, Gowrishankar Srinivasan

Gowrishankar Srinivasan

Studies aimed at improving the tensile, flexural, impact, thermal, and physical characteristics of wood–plastic composites composed of Paulownia wood flour derived from 36-month-old trees blended with polypropylene were conducted. Composites of 25% and 40% w/w of Paulownia wood were produced by twin-screw compounding and injection molding. Composites containing 0–10% by weight of maleated polypropylene were evaluated and an optimum maleated polypropylene concentration determined, i.e., 5%. The particle size distribution of Paulownia wood filler is shown to have an effect on the tensile and flexural properties of the composites. Novel combination composites of dried distiller’s grain ...


Ultrasonic Enhanced Liquefaction And Saccharification Of Corn For Bio-Fuel Production, Samir Kumar Khanal, Melissa T. Montalbo, Johannes Van Leeuwen, Gowrishankar Srinivasan, David A. Grewell May 2015

Ultrasonic Enhanced Liquefaction And Saccharification Of Corn For Bio-Fuel Production, Samir Kumar Khanal, Melissa T. Montalbo, Johannes Van Leeuwen, Gowrishankar Srinivasan, David A. Grewell

Gowrishankar Srinivasan

Dry grind corn milling does not reach full efficiency of starch conversion to sugars and subsequently to ethanol because of limitations in the milling process. This paper examines the use of high-power ultrasonics to enhance the release of fermentable sugars from milled dry corn. In this work, 20 kHz ultrasonic energy was used to pretreat corn mash prior to enzymatic conversion of corn starch to glucose in a batch-mode. The ultrasonic amplitude was varied from 0, 191 to 320 µm pp . The corn mash was sonicated for 0 (control), 20 and 40 seconds. Other experimental variables that were studied included ...


Improvement Of Mechanical Properties And Water Stability Of Vegetable Protein Based Plastics, Gowrishankar Srinivasan May 2015

Improvement Of Mechanical Properties And Water Stability Of Vegetable Protein Based Plastics, Gowrishankar Srinivasan

Gowrishankar Srinivasan

Bio-renewable bio-degradable plastics are a potential solution to the growing problems of pollution caused by petroleum plastics and dependency on foreign nations for petroleum resources. One possible feed stock for these materials are vegetable proteins, especially from soy bean and corn. These proteins have relatively high molecular weights and have the potential of being processed with standard polymer processing technologies. But some issues that need to be addressed are their water instability (soy protein) and inferior mechanical properties as compared to petroleum derived plastics. In this study, soy protein isolates (SPI) and zein protein was processed with various additives and ...