Development of electrospun functional nanofibers for antibacterial and coloration performances （エレクトロスピニングによる抗菌性・着色性機能ナノファイバーの開発に関する研究）

信州大学(Shinshu university)博士（工学）この博士論文は、次の学術雑誌論文を一部に使用しています。JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS. 106(3):1121-1128 (2018); doi:10.1002/jbm.b.33925. © 2017 Wiley Periodicals, Inc.CARBOHYDRATE POLYMERS. 207:640-649 (2019); doi:10.1016/j.carbpol.2018.12.029. © 2018 Elsevier Ltd.APPLIED NANOSCIENCE. 9(8):1661-1670 (2019); doi:10.1007/s13204-019-00952-3. © King Abdulaziz City for Science and Technology 2019.MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS. 98:1179-1195 (2019); doi:10.1016/j.msec.2019.01.017. © 2019 Elsevier B.V.ULTRASONICS SONOCHEMISTRY. 39:34-38 (2017); doi:10.1016/j.ultsonch.2017.04.010. © 2017 Elsevier B.V.APPLIED NANOSCIENCE. 8(6):1505-1514 (2018); doi:10.1007/s13204-018-0823-8. © Springer-Verlag GmbH Germany, part of Springer Nature 2018.ULTRASONICS SONOCHEMISTRY. 51:399-405 (2019); doi:10.1016/j.ultsonch.2018.07.035. © 2018 Elsevier B.V.ThesisJATOI ABDUL WAHAB. Development of electrospun functional nanofibers for antibacterial and coloration performances　（エレクトロスピニングによる抗菌性・着色性機能ナノファイバーの開発に関する研究）. 信州大学, 2019, 博士論文. 博士（工学）, 甲第699号, 平成31年03月20日授与.doctoral thesi

Study of the indoor decontamination using nanocoated woven polyester fabric

This research primarily deals with the photocatalytic degradation of methanol in indoor air using nanocoated indoor textiles used for curtains as household textiles. The woven polyester was coated by titanium dioxide by sol gel method, using silicon-based binder. The characterization of the coating has been done using scanning electron microscopy (SEM) image analysis, energy dispersive analysis using X-ray (EDAX) and Fourier transform infrared spectroscopy (FTIR). The DIY instrument providing the similar environment as of indoor was designed to assess the performance of the degradation of formaldehyde under UV light. The photocatalytic degradation rate was measured using the absorption value of the solutions obtained in the result of liquid chromatography of test solution and reagent solution. Different amount of dosages (1–3 %) and different time period of coatings (half hour to 3 h) have been evaluated for optimization

Influence of Amino-Ffunctional Macro and Micro Silicone Softeners on the Properties of Cotton Fabric

Amino-functional silicone softeners are most widely used type of soft finishes owing to their outstanding permanent softness, smoothness and handle characteristics. These soft finishes are prepared in different emulsion droplet sizes such as macro and micro emulsions providing varying characteristics on the textile on which they are applied. The macroemulsions due to their larger droplet sizes lubricate fabric and yarn surfaces, while the micro-emulsion, thanks to their smaller sizes penetrate inside fiber pores. In this research amino-functional macro and micro emulsions have been applied on dyed cotton fabric in 1:1 combination and compared against their influence on physical properties such as bending length, abrasion resistance, tensile strength, crease resistance and water repellency. These emulsions have also been compared for their influence on colorimetric properties; color difference and color strength (K/S values). The results reveal that the softener`s application in combination improves the properties deteriorated by each softener when applied separatel

Antibacterial efficacy of poly(vinyl alcohol) composite nanofibers embedded with silver-anchored silica nanoparticles

Silver has been widely used as an effective antibacterial agent especially for treating burns and wounds. However, release of silver from materials often arouse side effects due to toxicity of silver towards mammalian cells. Argyria and argyrosis are well known problems of acute toxicity of silver towards human body. Immobilization of silver is an effective approach to reduce silver release. Herein, we present poly(vinyl alcohol) (PVA) composite nanofibers embedded with silver-anchored silica nanoparticles (SSNs) as a novel antibacterial material. Silver nanoparticles anchored on silica nanoparticles were prepared and incorporated into PVA nanofibers to fabricate silver-silica embedded PVA nanofibers (SSN-PVA) by electrospinning. Incorporation of SSNs into PVA was confirmed by TEM and SEM results revealed regular nanofibers whose diameter increased with successive addition of SSNs. The SSN-PVA nanofibers showed significant antibacterial efficacy against both Gram-negative and Gram-positive bacteria. Our research results demonstrated SSN-embedded polymeric nanofibers can open up a promising prospect for the prevention of bacterial infection in diverse biomedical fields including wound dressing. (c) 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1121-1128, 2018.11Nsciescopu