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Abstract:1.In this work,(design parameters) were investigated for (enhancing the conductivity) of(graphene-coatedcotton textiles).2.The (mechanical performance) of the fabrics was also investigated. The results showed that3.(Electrical conductivity increased by approximately three orders of magnitude) with the increase in the number of(coating process from 1 to 20 cycles)4. (Electro-activity) was measured by cyclic voltammetry (CV) and scanning electrochemical microscopy.An increase( in electro-activity was observed) when the inactive GO was reduced to RGO.Introduction:1. attracted a great deal of attention recent years due to itsas well as other2.containing have recently attracted much attention for their use in a widerange of applications, especially3. Different methods have been used for the production of ,andwas the fist method used to produceHowever, the production by this method is not very effective,so other methods such ashave been developed4. In this paper we have used a chemical method to obtainwhere (graphene oxide) is to obtain 5. have several advantages over conventional materials such as , such as And. In addition,For example.6. have usually been obtained by in contact with( solutions)7. In the present work, were obtained by 8. E-textiles are fabrics that enable computing, digital components(元件) and electronics to be embedded(嵌入) in them. Similar to classical electronics, construction of electronic capabilities on textile fibers requires use of conducting and semi-conducting materials(半导体). (套话)9. Electroconductive textiles can be made using( metal strands or metallic fibers mixed with textile fibers woven into the construction of the textile). However, because both( metals and classical semiconductors are stiff呆板 material), they are not very suitable for textile fiber applications since (fibers are subjected to a high degree of stretch and bending during their application). There is also an interest in (semiconducting textiles), made by (impregnating normal textiles with intrinsically conducting polymers, carbon black, carbon nanotubes or metal-based powders).10. But, the most widely used methods require (complex processes, expensive materials )and pre-functionalization and have some disadvantage such as (lacking uniform coating, flexibility and durable wear resistance(耐用耐磨), which increase cost of production.)11. . has been highly effective in producing. However, this approach is limited byOn the other hand, chemical reduction can be realized at, which is extremely important for practical applications.12. In this paper, the fabrication of( electroconductive cotton textiles )was explored using graphene. GO was( deposited )on the surface of fabric through a (conventional dip and dry) approach.13. Although numerous studies have investigated effect of, this is the first report on the effect of. The results are important for understanding and controlling and their possible applications.14. are highly attractive due to their intrinsic (本质)ability to form a variety of by simply . 15. has been accomplished by, In contrast.16. The pure retained the advantageous properties, such as . However, the preparation of industrial quantities is presently impractical.17. In this study, we used for producingby.Experimental:1. All reagents used were of analytical grade.(套话)2. were supplied byand their characteristics were3. were used as received from4. These are specific terms used in the field of textile industry and their meaning can be consulted in a textile glossary.(套话)5.( An Autolab PGSTAT302 potentiostat/galvanostat) was used to perform EIS analyses.EIS measurements were performed in the range.6. The characterization by means of CV has been taken at different scan rates as previous authors have corroborated the influence of this parameter on the electrochemical response obtained.7. was purchased from. All other materials including were supplied by.8. (The cotton fabric) was dipped into the prepared dispersion(分散液), soaked for at (roomtemperature )and then dried at for 30 min. Because of the strong adsorption, the fabric was quickly coated by the .9. The coating process was repeated times in order to increaseadsorption.(套话)10. The . samples were immersed in 100 ml aqueous solution of 25 mM reducing agents of .11. The mixture was kept at t for. min under constant stirring. The resulting fabric was washed with a large amount of water several times to remove the excessive. At the end, the samples were dried at 90 C for 30 min.12.Electrical surface resistivity of the fabrics was measured using( a standard two-probe method ) by means of Sa-Iran digital multimeter model 8515(数字万用电表)Results and discussion:1.FTIR-ATR measurements were performed to characterize GO powders as well as the RGO powders obtained after chemically reducing GO.2. (SEM)was used to observe the morphology of the (coatings obtained). Fig. shows the different (micrographs) obtained for the different RGO coated fabrics. Fig. shows micrographs of the sample.3.In these two micrographs (RGO sheets deposited )on PES fibers can be seen. In general4.Fig. shows micrographs of the sample,where the presence of some particles can be observed on the surface of the fibers.5. Samples of with were also measured to compare the different values obtained6. the (impedance modulus (|Z|) at the different frequencies for the different samples can be observed.(套话).7. However when the sample of coated with GO was reduced, a decrease of |Z| of about seven orders of magnitude was obtained.8. It is worth mentioning that the values of |Z| increase with the decreasing frequency for the PES-1G sample.9. this would indicate a slight inductive behavior10. Fig. shows different approach curves obtained in different parts of the fabric for samples. As can be seen in the behavior changes completely from. In this case when the approaches the surface of the sample, there is an increase in the . This indicates that the sample is , since the sample is able to11. In Fig. analyses on the sample of are shown. In this case was also obtained and averaged values of were obtained for.12. The between the different does not play a role in this case, however, it had significant effect on.13. Future work is currently being carried out to study the of the samples by in 14.The present approach for making( electroconductive graphenecoated cotton fabric ) included two steps. The first was to( coat cotton fabric with GO by a simple dip and dry method). The second was( reduction of the GO deposited on the fabric to create electroconductive cotton fabric).15. The SEM micrographs of the GO-coated fabric are shown in Fig. It can be seen that,after coating fabric with GO, the inherence morphological structures of the cotton fibers( did not change) which was due to (very low thickness and size uniformity of GO nanosheets that homogeneously coated the fibers surface). However, (as indicated by arrows, a few white spots) can be observed in some parts of the fiber due to( incomplete exfoliation of graphite particles during synthesis process.)16. As, in particular, (color )can be potentially employed as a fast and intuitive(直觉)way for (easy detection and simple evaluation of deposition and reduction of GO), color changes of the treated fabrics were investigated by assessing reflectance spectra and color coordinates.17. were measured and the results are presented in TableIn comparison with the original cotton18. After, (tensile strength) of the fabrics treated with was very similar to that of the( GOcoated fabric). However, significant decrease was observed in tensile strength of the fabrics treated with . The results demonstrated that the(reduction reaction )under different (reducing agents affected cellulosic structures of the cotton fibers.)19. With regard to the results of (surface resistance and mechanical properties), it can be concluded that (reduction treatment of the GO-coated fabric by Na2S2O4 )did not cause any damage to the structure of cotton fibers, which confirmed its suitability for practical applications. In addition, considering the large scale production,( low price and its application in textile industry), especially in some industrial dyeing processes, has a high potential for mass production of .20. were dyed directly through a (dye-printing approach.)Briefly, were passed through a Temperature of the dye-bath was maintained at21. showed excellent (electrical conductivity )even after being water-washed. For example22. The effect of (reduction time )on conductivity response was also studied. The data showed that, with the increase in (reaction time from 1 to 30 min, surface resistance )decreased.23. The substantial decrease of resistance from 1 to 5 min, (respectively, demonstrated rapid removal of the most oxygen-functional groups of GO during the first stages of reduction).However, for the samples treated at 60 and 120 min,(surface resistance slightly increased), which may be due to( removal of some graphene nanosheets from surface of the fabric).Conclusions1. fabrics were coated with graphene oxide (GO) and later it was reduced through a chemical method to obtain reduced graphene oxide (RGO). Samples with a different number of were obtained and analyzed.2. (Fourier transform infrared spectroscopy ) showed the (diminution) of the bands attributed to oxidized groups after reducing GO to RGO.3.(Scanning electron microscopy )allowed the observation of sheets of RGO deposited on fibers, although in general it was very difficult to observe the coatings formed.4. Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and scanning electrochemical microscopy (SECM) showed the effective reduction of GO to RGO.5. With(decrease )of the( electrical resistance )of about 7 orders of magnitude was observed when the .6. More(did not) produce a significant improvement in the (electrical) properties.7. With only one RGO coating, the contact between the different RGO sheets is not satisfactory and more layers are needed to improve this contact and obtain a material with good electrical and electrochemical properties.(套话)8. by showed the clear difference

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