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  1. Article ; Online: Facile fabrication and comparative exploration of high cut resistant woven and knitted composite fabrics using Kevlar and polyethylene

    Anam Ali Memon / Mazhar H. Peerzada / Iftikhar Ali Sahito / Sadaf Abbassi / Sung Hoon Jeong

    Fashion and Textiles, Vol 5, Iss 1, Pp 1-

    2018  Volume 11

    Abstract: Abstract Composite materials offer a number of distinct advantages in a wide range of low and high technology engineering applications. Considering the fact, in this study, a facile fabrication method of highly cut resistant composite fabrics using ... ...

    Abstract Abstract Composite materials offer a number of distinct advantages in a wide range of low and high technology engineering applications. Considering the fact, in this study, a facile fabrication method of highly cut resistant composite fabrics using Kevlar and polyethylene is reported. 100% Kevlar, 100% Polyethylene and 50% Kevlar/50% Polyethylene composite fabrics are fabricated by weaving and knitting techniques. These fabrics were tested for cut index, abrasion, and puncture resistance for comparative exploration. Owing to higher mechanical strength and greater number of interlacements; the woven fabrics demonstrated twice cut resistance in contrast to knitted fabrics. The surface morphology of deformed samples investigated by Scanning Electron Microscopy (SEM) also proved that the woven fabrics of all types offered much resistance towards cutting than the knitted fabrics. Moreover, it is found that greater thickness of fabrics leads to intensification of the cut resistance. Furthermore, the effect of fiber type on cut resistant property of the fabrics was also measured and it was found that the composite fabric exhibited double cut resistance than 100% Kevlar and 100% Polyethylene fabrics. The 50% Kevlar/50% Polyethylene composite woven fabric resisted up to 35 consecutive strokes of sharp steel cutter whereas the knitted fabric completely torn apart at 20 strokes only. Thus, the as synthesized 50% Kevlar/50% Polyethylene composite woven fabric exhibiting superior cut resistance property offer a judicious choice for the preparation of efficient cut resistant fabric for industrial and domestic applications.
    Keywords Cut resistance ; Kevlar ; Polyethylene ; Composite fabric ; Protective fabrics ; Textile bleaching ; dyeing ; printing ; etc ; TP890-933 ; Social Sciences ; H
    Subject code 670
    Language English
    Publishing date 2018-02-01T00:00:00Z
    Publisher SpringerOpen
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: Correction: An evidence for an organic N-doped multiwall carbon nanotube heterostructure and its superior electrocatalytic properties for promising dye-sensitized solar cells

    Arbab, Alvira Ayoub / Anam Ali Memon / Iftikhar Ali Sahito / Naveed Mengal / Kyung Chul Sun / Mumtaz Ali / Sung Hoon Jeong

    Journal of materials chemistry. 2018 May 8, v. 6, no. 18

    2018  

    Abstract: Correction for ‘An evidence for an organic N-doped multiwall carbon nanotube heterostructure and its superior electrocatalytic properties for promising dye-sensitized solar cells’ by Alvira Ayoub Arbab et al., J. Mater. Chem. A, 2018, DOI: 10.1039/ ... ...

    Abstract Correction for ‘An evidence for an organic N-doped multiwall carbon nanotube heterostructure and its superior electrocatalytic properties for promising dye-sensitized solar cells’ by Alvira Ayoub Arbab et al., J. Mater. Chem. A, 2018, DOI: 10.1039/c8ta00535d.
    Keywords carbon nanotubes ; chemistry ; solar cells
    Language English
    Dates of publication 2018-0508
    Size p. 8772.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2702232-8
    ISSN 2050-7496 ; 2050-7488
    ISSN (online) 2050-7496
    ISSN 2050-7488
    DOI 10.1039/c8ta90097c
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: An evidence for an organic N-doped multiwall carbon nanotube heterostructure and its superior electrocatalytic properties for promising dye-sensitized solar cells

    Arbab, Alvira Ayoub / Anam Ali Memon / Iftikhar Ali Sahito / Naveed Mengal / Kyung Chul Sun / Mumtaz Ali / Sung Hoon Jeong

    Journal of materials chemistry. 2018 May 8, v. 6, no. 18

    2018  

    Abstract: A novel organic heteroatom doping technique is proposed for the synthesis of N-doped multiwall carbon nanotube (MWCNT) heterostructures. The approach involves the effective doping of MWCNTs with nitrogen via a cationised bovine serum albumin (cBSA) ... ...

    Abstract A novel organic heteroatom doping technique is proposed for the synthesis of N-doped multiwall carbon nanotube (MWCNT) heterostructures. The approach involves the effective doping of MWCNTs with nitrogen via a cationised bovine serum albumin (cBSA) protein complex. The cationization of BSA releases an exceptional number of activated nitrogen species present in localized amino groups, which are further embedded into the MWCNT framework. The amino groups present in BSA act as nitrogen donors and surface stabilizing agents to generate a highly conductive and functionalized carbon heterostructure. The doped nitrogen was present in the form of pyridinic and pyrrolic states, as evidenced by XPS analysis. Organic N-doped MWCNTs with predominant pyridinic N atoms displayed superior charge transfer (RCT = 0.06 Ω) owing to their superior electrocatalytic activity. A DSSC fabricated with organic N-doped MWCNT heterostructures exhibited a high conversion efficiency of 9.55%, which was similar to that of a Pt cathode, with an efficiency of 9.89%. The superior electrochemical performance of organic N-doped MWCNT heterostructures is due to the high charge polarization arising from the difference in electronegativity between nitrogen and carbon as well as the structural strain caused by the cationic BSA protein complex. Our proposed system provides new routes for the synthesis of organic heteroatom-doped nanomaterials for promising energy storage devices.
    Keywords X-ray photoelectron spectroscopy ; bovine serum albumin ; carbon ; carbon nanotubes ; cathodes ; cationization ; electrochemistry ; energy ; nitrogen ; solar cells ; stabilizers
    Language English
    Dates of publication 2018-0508
    Size p. 8307-8322.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2702232-8
    ISSN 2050-7496 ; 2050-7488
    ISSN (online) 2050-7496
    ISSN 2050-7488
    DOI 10.1039/c8ta00535d
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Fabrication of a flexible and conductive lyocell fabric decorated with graphene nanosheets as a stable electrode material

    Mengal, Naveed / Alvira Ayoub Arbab / Anam Ali Memon / Iftikhar Ali Sahito / Kyung Chul Sun / Muhammad Bilal Qadir / Sung Hoon Jeong

    Carbohydrate polymers. 2016 Nov. 05, v. 152

    2016  

    Abstract: Textile electrodes are highly desirable for wearable electronics as they offer light-weight, flexibility, cost effectiveness and ease of fabrication. Here, we propose the use of lyocell fabric as a flexible textile electrode because of its inherently ... ...

    Abstract Textile electrodes are highly desirable for wearable electronics as they offer light-weight, flexibility, cost effectiveness and ease of fabrication. Here, we propose the use of lyocell fabric as a flexible textile electrode because of its inherently super hydrophilic characteristics and increased moisture uptake. A highly concentrated colloidal solution of graphene oxide nanosheets (GONs) was coated on to lyocell fabric and was then reduced in to graphene nanosheets (GNs) using facile chemical reduction method. The proposed textile electrode has a very high surface conductivity with a very low value of surface resistance of only 40Ωsq−1, importantly without use of any binding or adhesive material in the processing step. Atomic force spectroscopy (AFM) and Transmission electron microscopy (TEM) were conducted to study the topographical properties and sheet exfoliation of prepared GONs. The surface morphology, structural characterization and thermal stability of the fabricated textile electrode were studied by field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), X ray photon spectroscopy (XPS), Raman spectroscopy, Wide angle X ray diffraction spectroscopy (WAXD) and Thermogravimetric analysis (TGA) respectively. These results suggest that the GONs is effectively adhered on to the lyocell fabric and the conversion of GONs in to GNs by chemical reduction has no adverse effect on the crystalline structure of textile substrate. The prepared graphene coated conductive lyocell fabric was found stable in water and electrolyte solution and it maintained nearly same surface electrical conductivity at various bending angles. The electrical resistance results suggest that this lyocell based textile electrode (L-GNs) is a promising candidate for flexible and wearable electronics and energy harvesting devices.
    Keywords chemical reduction ; cost effectiveness ; crystal structure ; electrical conductivity ; electrical resistance ; electrodes ; electrolytes ; electronics ; energy ; fabrics ; Fourier transform infrared spectroscopy ; graphene ; graphene oxide ; hydrophilicity ; nanosheets ; photons ; Raman spectroscopy ; scanning electron microscopy ; thermal stability ; thermogravimetry ; transmission electron microscopy ; X-ray diffraction ; X-ray photoelectron spectroscopy
    Language English
    Dates of publication 2016-1105
    Size p. 19-25.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1501516-6
    ISSN 1879-1344 ; 0144-8617
    ISSN (online) 1879-1344
    ISSN 0144-8617
    DOI 10.1016/j.carbpol.2016.06.099
    Database NAL-Catalogue (AGRICOLA)

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