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Full-Text Articles in Biological Engineering
Mechanical And Physical Properties Of Spider Silk Films Made From Organic And Water-Based Dopes, Chauncey Lewis Tucker
Mechanical And Physical Properties Of Spider Silk Films Made From Organic And Water-Based Dopes, Chauncey Lewis Tucker
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Spider silk has become a popular material due to its exceptional mechanical and biocompatibility properties. The project team has developed methods of producing and improving the properties of synthetic spider silk films. Other groups have been able to produce similar films having less than impressive mechanical properties using a toxic solvent. The spider silk team here at Utah State University has developed a new way of processing these films to more than triple their mechanical properties and has created a novel form of spider silk films produced from a water-based liquid, making it less expensive, more environmentally friendly, and more …
Molecular Dynamics Of Soy-Protein Isolate Films Plasticized By Water And Glycerol, S.-G. Choi, K. M. Kim, Milford Hanna, Curtis L. Weller, W. L. Kerr
Molecular Dynamics Of Soy-Protein Isolate Films Plasticized By Water And Glycerol, S.-G. Choi, K. M. Kim, Milford Hanna, Curtis L. Weller, W. L. Kerr
Department of Biological Systems Engineering: Papers and Publications
The effects of water and glycerol on the molecular mobility of a soy-protein isolate (SPI)-based film were investigated using 1H nuclear magnetic resonance (NMR). SPI-films were prepared with different glycerol contents and equilibrated to various levels of water activity (aw). The distributed transverse relaxation of film samples showed 2 distinct components: a solid-like fraction (T2s*) and a liquid-like fraction (T2m*). The peak T2s* values of films with lower glycerol concentration were more sensitive to variation in aw. As aw increased, the change of solid-like to liquid-like fraction was observed in …