School of Textile and Material Engineering, Dalian Polytechnic University, Dalian , China

Transcription

1 J. Fiber Sci. Technol., 72(3), (2016) doi /fiberst The Society of Fiber Science and Technology, Japan 1 School of Textile and Material Engineering, Dalian Polytechnic University, Dalian , China 2 Division of Advanced Fibro-Science, Kyoto Institute of Technology, Matsugasaki Goshokaidocho, Sakyo-ku, Kyoto , Japan Abstract Staphylococcus aureus Escherichia coli. # corresponding author: sry@hotmail.co.jp Journal of Fiber Science and Technology (JFST)

2 Chemical component μ μ Fig. 1 Table 1 Content wt% Water 91.52±2.12 Carbohydrate 7.33±0.13 Rough fiber 0.75±0.05 Fat 0.23±0.01 Protein 1.71±0.05 Ash 0.52±0.03 Journal of Fiber Science and Technology (JFST)

3 Fig. 2 Fig. 3 Fig. 4 Fig. 5 θ θ θ Journal of Fiber Science and Technology (JFST)

4 Fig. 6 Tensile strength and elongation of natural fiber reinforced composites Fig. 7 Tensile strength and elongation value of silk/ onion composites with different fiber length Fig. 8 Photo of antibacterial result against Escherichia coli (a) and Staphylococcus aureus (b) Fig. 9 The antibacterial effect of tussah/onion composite against Escherichia coli these two kinds of natural fibers had good reinforcing length on the tensile property of silk/onion composite, action for the onion matrix, and with the fiber content the 31 wt% silk fiber reinforced onion composites with increasing, the tensile strength firstly increased and different fiber lengths were produced and tested. The then decreased. The tussah silk/onion composite Tensile strength and elongation properties were showed the higher tensile strength than that of shown in Fig. 7. It indicated that the 1-2 mm silk fiber bamboo pulp/onion composite. Compared with the length was with the best reinforcing properties in onion film control, the highest tensile strength was both tensile strength and elongation. Short fibers improved by about 60%. When the silk fiber content usually showed good dispersion but relatively week was further increased, the composite showed the strength. Long fibers usually showed bad dispersion decreased tensile strength, which was mainly because and led to decreased tensile strength. of the insufficient onion matrix. The bamboo pulps 3.5 Antibacterial properties were with the shorter length and the slimmer Onion self contains a lot of natural flavonoids, diameter, which led to the highest tensile strength which can be used as a kind of antibacterial substance. appeared at a relatively lower fiber content in the To study the bacterial inhibition of the flavonoids in composite. The bamboo pulps were also weaker than tussah silk/onion composites, the tussah fiber/onion the used tussah silk, and the lower enhancing action composit paper was cut into the rotundity with 26mm was obtained. Fig. 5 also indicated that the elongation diameter, and then was soaked into the different could be partly improved by the increasing of the flavonoid solution for antibacterial finishing, whose fiber content, and the tussah silk/onion composite concentration was changed from 1 mg/ml to 4 mg/ml. showed the higher elongation compared with that of The flavonoids were acquired from abandoned onion bamboo skins by ethanol extraction method. The antibacterial pulp/onion composite. Combining the properties of tensile strength and elongation, the properties tussah silk/onion composite reflected the better Escherichia coli were studied and shown in Fig. 8. The strength and ductility. tussah In order to investigate the effect of silk fiber 64 against silk / onion Staphylococcus composite aureus showed and certain antibacterial property against both Staphylococcus Journal of Fiber Science and Technology (JFST), Vol.72, No. 3 (2016)

5 aureus Escherichia coli Escherichia coli Staphylococcus aureus Staphylococcus aureus Escherichia coli Escherichia coli Staphylococcus aureus Staphylococcus aureus Escherichia coli Composites Science and Technology 69 Carbohydrate Polymers 110 Composites : Part A 68 Food Science and Technology 8 Transactions of the Chinese Society of Agricultural Machinery 41 Journal of Solid Mechanics and Materials Engineering 2 Polymer Engineering and Science 49 Journal of Polymers and the Environment 15 JOM Journal of the Minerals, Metals and Materials Society 58 Macromolecular Materials and Engineering 288 International Journal of Antimicrobial Agents 26 Journal of Medicinal Plants Research 5 Science and Technology of Food Industry 31 Journal of Membrane Science 241 Journal of Fiber Science and Technology (JFST)