title: Preparation and properties of electrospun soy protein isolate/polyethylene oxide nanofiber membranes.
abstract: Soy protein isolate (SPI) and polyethylene oxide (PEO) were dissolved in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) and nonwoven nanofiber membranes were prepared from the solution by electrospinning. PEO functioned as a cospinning polymer in the process to improve the spinnability of SPI. The ratio of SPI to PEO was varied and the rest spinning conditions remained unchanged. The morphology of the nanofiber membranes, SPI and PEO distribution and phase structure in the fiber, crystallization and interaction between SPI and PEO, thermal properties and wettability of the membranes were studied. The results showed that the diameter of most of the nanofibers was in the range of 200-300 nm. SPI and PEO showed high compatibility in the fiber and SPI was homogeneously dispersed at nanoscale. Crystallization of SPI and PEO in the fiber was significantly different from that of their pure forms. All the nanofiber membranes showed superhydrophilicity. These nanofiber membranes can find importance in filtration and biomedical applications.
authors: Department of Mechanical Engineering, North Dakota State University, PO Box 6050, Fargo, North Dakota 58108, United States.
authors: Xuezhu
authors: X
authors: Xu
authors: Long
authors: L
authors: Jiang
authors: Zhengping
authors: Z
authors: Zhou
authors: Xiangfa
authors: X
authors: Wu
authors: Yechun
authors: Y
authors: Wang
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning / Q000379:methods; D003460:Crystallization; D005347:Fibroblasts / Q000378:metabolism; D006358:Hot Temperature; D057139:Nanofibers / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D011092:Polyethylene Glycols / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D020005:Propanols / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D030262:Soybean Proteins / Q000737:chemistry*; D013499:Surface Properties; D013818:Thermogravimetry / Q000379:methods; D017155:Wettability; D014961:X-Ray Diffraction; D006845:Hydrocarbons, Fluorinated
chemical_list: D001672:Biocompatible Materials; D011092:Polyethylene Glycols; D011108:Polymers; D020005:Propanols; D012997:Solvents; D030262:Soybean Proteins; C001337:hexafluoroisopropanol; D006845:Hydrocarbons, Fluorinated