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JFBI -> 2020, Volume 13 Issue 1, 31 March 2020  
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Study on Ohmic Heating Behavior of Fly Ash Filled Carbon Woven/Epoxy Resin Composite
Yuan-Feng Wang, Vijay Baheti, Kai Yang,Mohanapriya Venkataraman, Tao Yang
JFBI. 2020, 13 (1): 1-11.   DOI: 10.3993/jfbim00329
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The Ohmic heating behavior and electrical property of the carbon fabric/green epoxy composite laminates filled with various concentrations of unmilled fly ash and milled fly ash were investigated in present work. We used an infrared camera to record the change in surface temperature of composites over a period of time by varying the voltage from 0 to 10 V. The results show that the composite containing low concentration of fly ash exhibited the optimum Ohmic heating behavior under different applied voltages. The maximum temperatures of epoxy/carbon composites were adjustable by controlling the concentrations of fly ash fillers as well as the applied voltage. When a certain voltage was applied to the composite, the surface temperature of composite raised to the maximum within 20 s and became stable, then cool down to room temperature in 120 s. In addition, the milled fly ash filled epoxy/carbon composites were found to reveal improvement in electrical heating performance and structural stability over the unmilled fly ash filled composites.

Facile Preparation of Silk Fibroin Scaffold Via Direct Solvent Exchange
Qiu-Sheng Wang, Guo-Cong Han, Shu-Qin Yan,Ren-Chuan You, Qiang Zhang
JFBI. 2020, 13 (1): 13-21.   DOI: 10.3993/jfbim00328
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Although silk fibroin (SF) materials have gained extensive attention in tissue engineering due to their good machinability, biocompatibility, biodegradability, the complex processes, unmatched pore structures, and chemical crosslinker still hinder their mass production and clinic use. In this study, we reported a direct green and high-efficiency process to fabricate 3D silk fibroin scaffold by solvent exchange in water. The pore parameters were easily regulated with NaCl as auxiliary porogen. More importantly, without using any crosslinker or organic chemical-induced crystallin, SF scaffolds is mainly constructed with stable silk II crystalline (constituent with β-sheets), which was confirmed by Flourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Additionally, the scaffold in our research keeps good tunability on mechanical properties, which has been demonstrated by the results of mechanical testing and provides a feasible way to optimize physical cues for further applications. Thus, the 3D porous silk scaffold with high efficiency and promising structures broaden the potential as a substitute for biomaterials.

Analysis of Factors Influencing Consumers’ Purchase Intention Based on Perceived Value in E-commerce Clothing Pre-sale Model
Li Suo, Rui-Chen Lu, Guan-Di Lin
JFBI. 2020, 13 (1): 23-36.   DOI: 10.3993/jfbim00333
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The e-commerce pre-sale model for apparel is a kind of marketing method for retailers to generate actual consumption through online consumers’ payment of deposits or full payments. The online apparel’s re-sale model, an effective competition, can effectively reduce inventory, predict production and increase the actual profits of enterprises. Based on the perceived value of consumers, SPSS21.0 and AMOS21.0 are used to analyze the collected information, verify the hypotheses of the initial model of consumers’ purchase intention under the pre-sale model, and then make modifications. The relationship among variables can be revealed and this paper explains the performance of the influence of pre-sale mode on consumers’ purchase intention, by analyzing correlations among perceived benefit, perceived sacrifice and perceived value, as well as the impact on purchase intention.

Virtual Clothing Display Platform Based on CLO3D and Evaluation of Fit
Yan-Xue Wang, Zheng-Dong Liu
JFBI. 2020, 13 (1): 37-49.   DOI: 10.3993/jfbim00338
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The article uses CLO3D and HTML5 to design a virtual clothing display system. And for the problems that may arise when using CLO3D to make garments, the solution is given. At the same time, the evaluation of the fit of the virtual clothing made in CLO3D was discussed. Designers can use CLO3D to quickly create virtual clothing in accordance with the users’ requirements. After, through the system, designers can publish it on the Web for the users to effectively see the process of cloth making in an all-rounded way, while sustaining communication with designers. The design of this virtual clothing display platform provides some reference value for the digital model of the apparel industry.

Cross-sectional Porosity and Oil Sorption of PLA Nanofibers with Hollow and Lotus Root-like Structures
Ai-Yun Jiang, Zhi-Juan Pan
JFBI. 2020, 13 (1): 51-60.   DOI: 10.3993/jfbim00335
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Lotus root-like fibers and hollow structure fibers have been extensively studied in many different fields due to a large specific surface area and high porosity. However, most of the prepared materials have only one lotus root-like or hollow structure. Here, in this paper, the coaxial electrospinning poly(lactic acid) (PLA) nanofibers had hollow and lotus root-like structures. The porosity of the cross section was quantitatively analysed by MATLAB, and the oil sorption experiment was also carried out. In the hollow structure, when the flow rate ratio of the core/shell solution was 1:2 or 1:4, the pore porosity was about 41%, larger than 34.88% (1:3), while the pore porosity at 19-22 kV was stable at about 41%± 2%. On the contrary, the lower the porosity, the better the spinning state and the higher the hollow ratio. In the lotus root-like fibers, the porosity values were about 23% ± 2% under different spinning conditions, which means that the lotus root-like porosity was not significantly affected by the flow rate ratio of core/shell solution and voltage. Meanwhile, the absorption capacity of the lotus root-like fibers to diesel oil is more than 1.5 times that of hollow fibers.

Table of Contents - JFBI Vol 13 No 1
JFBI. 2020, 13 (1): 1000-.
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JFBI Vol 13 No 1 Cover
JFBI. 2020, 13 (1): 1001-.
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Show Abstract ( 55 )

ISSN 1940-8676
JFBI is Ei Indexed Journal
Editor-in-Chief: Prof. Yi Li
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