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RISS 인기검색어
- 검색키워드
- 저자 : Shixin Jin (검색결과 4 건)
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Shixin Jin,Binjie Xin,Yuansheng Zheng,Shuhua Liu 한국섬유공학회 2018 Fibers and polymers Vol.19 No.1
Electric field plays a key role in electrospinning process for nanofiber and nanofiber yarn producing. The electric field distribution of the yarn manufacturing system is simulated by using finite element method analysis. The effects of electric field distribution and intensity were studied to analyze the influence of the electric field on the electrospun nanofiber yarn surface morphology, mechanical, thermal and water absorption properties. The results show that the morphology anddiameters of nanofiber and yarn were obviously affected by the electric field with changing the needle distance and applied voltage, which further influence the mechanical performance of the yarn. The needle distance does not much affect the thermal property of the PSA electrospun yarn, whereas the yarn obtains better thermal resistance properties at voltage of 25 kV. The nanoyarn electrospun and assembled under higher applied voltage is proved to have a better wicking property in our research.
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Yunge Yu,Yan Liu,Fuli Zhang,Shixin Jin,Yaqian Xiao,Binjie Xin,Yuansheng Zheng 한국섬유공학회 2020 Fibers and polymers Vol.21 No.5
Polyurethane is a thermoplastic elastomer with excellent physical and chemical properties, the hydrophilicity ofPU limits the wide application in the waterproof and breathable materials market. In this study, SiO2 nanoparticles werehydrophobically modified by fluorosilane to prepare the fluorosilane-modified silica (F-SiO2), then it was added into thesynthesized polyurethane to prepare waterproof and breathable film (F-SiO2/PU) by electrospinning. Compared withpolyurethane membranes, F-SiO2/PU composite membranes could form rough morphological surface through the blendingof F-SiO2. The experimental results showed that the water contact angle of the composite nanofiber membranes increase withthe addition of the amount of modified silica, and the water contact angle reached 135 o when the dosage of F-SiO2 was5 wt%. The composite nanofiber membranes could be endowed with excellent waterproof performance, hydrophobicity(50 kPa) and moisture permeability (10.4 kg/m2·h). Besides, the prepared membrane can remain the hydrophobic propertystability under the dynamic tensile of large-scale deformation.
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Jinhao Xu,Fuli Zhang,Binjie Xin,Yuansheng Zheng,Chun Wang,Shixin Jin 한국섬유공학회 2020 Fibers and polymers Vol.21 No.7
In this study, a novel polyvinylbutyral (PVB) bonded polypropylene (PP) composite fibrous mat was fabricated viamelt-electrospinning. In order to enhance the structure stability and mechanical properties of pristine PP fibrous mat system,preparation and characterization of the composite fibrous material by mixing different percentages of PVB and PP wasdesigned. The PVB can form bonding point between the PP fibers, which can ease the slip phenomenon between strainedfibers. The structure, morphology, tensile and tearing stress were measured systematically. The resultants exhibited that thetensile stress and tearing strength of composite fibrous mats were increased from 30.13 to 43.73 kPa and from 0.07 to 0.5 N,respectively. Meanwhile, the straight jet length and whipping range of each electrospun jets were analyzed via the imagescaptured by a high-speed photography system during the spinning process. The experimental resultants depicted thatcomposite system can lead to longer straight jet length and smaller whipping range.
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Tian Ai,Chunmei Xu,Lei Zhang,Ke Chen,Yonggui Wu,Shujuan Dai,Xiaolu Xiong,Shixin Jie,Xiaoni Jin,Zhongxu Yu 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.9
Novel efficient biochar of Goldenberry peels (GBPMW-H3PO4) was prepared through a microwave-assistedphosphoric acid activation method. It was characterized and used for removing two beta-lactamase inhibitors, sulbactam(SAM, first listed in Japan in 1986) and avibactam (AVI, first listed in the U.S. in 2015), from aqueous solution. Characterization confirmed that GBPMW-H3PO4 displayed a high surface area (720.046m2 g1), more abundant porestructure, smaller particle size, and higher thermal stability. The experimental results showed that the adsorption of thetwo antibiotics was a spontaneous, favorable, and endothermic process, highly dependent on solution pH. A contacttime of 60 min assured equilibrium, and GBPMW-H3PO4 followed pseudo-first-order kinetics (R2=0.9950-0.9977). Furthermore,the adsorption capacities of GBPMW-H3PO4 for SAM and AVI were 211.86 and 198.81mg g1, respectively,and the performance was better than that of unmodified biochar. Microscopically, the main mechanism could beexplained by - electron donor-acceptor interaction, hydrogen bonding interaction, -hydrogen bonding, hydrophobicinteraction, and electrostatic interaction. The study demonstrates that the microwave-assisted H3PO4 activationmethod could produce biochar, and GBPMW-H3PO4 was confirmed to be a low-cost and high-efficiency adsorbent forremoving beta-lactamase inhibitors from medical wastewater.
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