{"id":658,"date":"2016-01-12T16:17:12","date_gmt":"2016-01-12T22:17:12","guid":{"rendered":"http:\/\/www.engineering.iastate.edu\/people\/profile\/dgrewell\/"},"modified":"2026-09-19T20:02:54","modified_gmt":"2026-09-20T01:02:54","slug":"dgrewell","status":"publish","type":"profile","link":"https:\/\/www.engineering.iastate.edu\/people\/profile\/dgrewell\/","title":{"rendered":"Grewell, David"},"author":308,"template":"","affiliation":[15],"department":[1073,10],"group":[],"interest":[677,680,679,678,682,681],"class_list":["post-658","profile","type-profile","status-publish","hentry","affiliation-staff","department-abe-courtesy","department-abe","interest-development-of-bioplastics-and-biocomposites","interest-development-of-sustainable-materials","interest-modelding-of-additive-manufacting","interest-polymer-processing-development","interest-the-development-of-biodegradable-plastics","interest-the-use-of-ultrasonics-for-chemical-processing"],"firstname":"David","key_research_area":"","netid":"dgrewell","isu_title":"Affiliate [A&BE]","email":"dgrewell@iastate.edu","external_link":"","hide_isu_title":"1","nickname":"","info":"<h4 id=\"interest-header&quot;\" class=\"dir-header\">Interest Areas<\/h4>\r\n<div>\r\n\r\nDr. Grewell's research team work on the following main focuses areas:\r\n\r\n<strong>Bio-plastics<\/strong>\r\nIn this work, naturally derived proteins from corn and soybeans are compounded and processed to form bio-degradable, bio-renewable polymers. The research includes, formulation, processing and application development.\r\n\r\n<strong>Bio-fuels<\/strong>\r\nBased on the worlds need for \"green\" renewable fuels Dr. Grewell's team is developing and characterizing the use of high power ultarsonics to enhance bio-fuels. Substrates ranging from corn to switch grass to soy-oils have been studied to enhance ethanol and bio-diesel fuels.\r\n\r\n<strong>Bio-Mass treatment<\/strong>\r\nIn this work, high powered ultrasonics are used to treat municipal waste to enhance treatment and methane production. This work also include the treatment of animal waste.\r\n\r\n<strong>Micro-fabrication<\/strong>\r\nIn this work, novel techniques for micro-fabrications on polymer substrates have been developed. These techniques are used to fabricate \"labs-on-a-CD\" for rapid, low costs frequent testing of various pathogens.\r\n\r\n<strong>Ultrasonic welding<\/strong>\r\nBased on fundamentals, polymer and metallic welds are modeled and characterize. The goal of this work it develop technology for aluminum cars, bio-renewable polymer packaging and environmentally consensus products.\r\n\r\n<\/div>","middle_name":"","isu_office":"1201 Sukup $ 609 Bissell Rd. # Ames, IA 500111098","uid":[],"hide_isu_office":"1","lastname":"Grewell","publications":"<p><a href=\"http:\/\/works.bepress.com\/david_grewell\/\">Digital Repository Page<\/a><\/p>","user_image":{"ID":"774","post_author":"0","post_date":"2016-01-14 22:50:27","post_date_gmt":"2016-01-15 04:50:27","post_content":"","post_title":"Grewell-David","post_excerpt":"","post_status":"inherit","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"grewell-david","to_ping":"","pinged":"","post_modified":"2022-07-13 10:23:09","post_modified_gmt":"2022-07-13 15:23:09","post_content_filtered":"","post_parent":"658","guid":"http:\/\/www.engineering.iastate.edu\/people\/files\/2016\/01\/Grewell-David.jpg","menu_order":"0","post_type":"attachment","post_mime_type":"image\/jpeg","comment_count":"0","pod_item_id":"774"},"user_title":"Affiliate Professor\r\nDirector, Center for Bioplastics and Biocomposites (CB2)\r\nWalter B. Booth Distinguished Professorship\r\nISU Civil, Construction and Environmental Engineering (courtesy)","phone_number":"515-294-1434","fax":"","office":"","_links":{"self":[{"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/profile\/658","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/profile"}],"about":[{"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/types\/profile"}],"author":[{"embeddable":true,"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/users\/308"}],"version-history":[{"count":5,"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/profile\/658\/revisions"}],"predecessor-version":[{"id":16905,"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/profile\/658\/revisions\/16905"}],"wp:attachment":[{"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/media?parent=658"}],"wp:term":[{"taxonomy":"affiliation","embeddable":true,"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/affiliation?post=658"},{"taxonomy":"department","embeddable":true,"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/department?post=658"},{"taxonomy":"group","embeddable":true,"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/group?post=658"},{"taxonomy":"interest","embeddable":true,"href":"https:\/\/www.engineering.iastate.edu\/people\/wp-json\/wp\/v2\/interest?post=658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}