scholarly journals Graphene oxide incorporated waste wool/PAN hybrid fibres

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Md Abdullah Al Faruque ◽  
Rechana Remadevi ◽  
Albert Guirguis ◽  
Alper Kiziltas ◽  
Deborah Mielewski ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Wet Spinning ◽  
Amino Groups ◽  
Electrically Conductive ◽  
Textile Waste ◽  
Smart Textile ◽  
Hybrid Fibre ◽  
Carboxylic Groups ◽  
Promising Solution ◽  
The Fourier Transform

AbstractThis work aims to evaluate the potential of using textile waste in smart textile applications in the form of a hybrid fibre with electrical properties. The bio-based electrically conductive fibres were fabricated from waste wool and polyacrylonitrile (PAN) via wet spinning with different wool content. The control PAN and hybrid fibre produced with the highest amount of wool content (25% w/v) were coated with graphene oxide (GO) using the "brushing and drying" technique. The GO nanosheets coated control PAN and wool/PAN hybrid fibres were chemically reduced through hydrazine vapour exposure. The Fourier transform infrared spectroscopy showed the presence of both protein and nitrile peaks in the wool/PAN hybrid fibres, although the amide I and amide A groups had disappeared, due to the dissolution of wool. The morphological and structural analysis revealed effective coating and reduction of the fibres through GO nanosheets and hydrazine, respectively. The hybrid fibre showed higher electrical conductivity (~ 180 S/cm) compared to the control PAN fibres (~ 95 S/cm), confirming an effective bonding between the hydroxyl and carboxylic groups of the GO sheets and the amino groups of wool evidenced by chemical analysis. Hence, the graphene oxide incorporated wool/PAN hybrid fibres may provide a promising solution for eco-friendly smart textile applications.

scholarly journals A Facile Approach of Fabricating Electrically Conductive Knitted Fabrics Using Graphene Oxide and Textile-Based Waste Material

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 3003
Author(s):  
Md Abdullah Al Faruque ◽  
Alper Kiziltas ◽  
Deborah Mielewski ◽  
Maryam Naebe
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Colour Change ◽  
Reduction Process ◽  
Composite Fibre ◽  
Knitted Fabrics ◽  
Electrically Conductive ◽  
Coated Fabrics ◽  
The Fourier Transform ◽  
Application Fields

This research investigated a feasible approach to fabricating electrically conductive knitted fabrics using previously wet-spun wool/polyacrylonitrile (PAN) composite fibre. In the production of the composite fibre, waste wool fibres and PAN were used, whereby both the control PAN (100% PAN) and wool/PAN composite fibres (25% wool) were knitted into fabrics. The knitted fabrics were coated with graphene oxide (GO) using the brushing and drying technique and then chemically reduced using hydrazine to introduce the electrical conductivity. The morphological study showed the presence of GO sheets wrinkles on the coated fabrics and their absence on reduced fabrics, which supports successful coating and a reduction of GO. This was further confirmed by the colour change properties of the fabrics. The colour strength (K/S) of the reduced control PAN and wool/PAN fabrics increased by ~410% and ~270%, and the lightness (L*) decreased ~65% and ~71%, respectively, compared to their pristine fabrics. The Fourier transform infrared spectroscopy showed the presence and absence of the GO functional groups along with the PAN and amide groups in the GO-coated and reduced fabrics. Similarly, the X-ray diffraction analysis exhibited a typical 2θ peak at 10⁰ that represents the existence of GO, which was demolished after the reduction process. Moreover, the wool/PAN/reduced GO knitted fabrics showed higher electrical conductivity (~1.67 S/cm) compared to the control PAN/reduced GO knitted fabrics (~0.35 S/cm). This study shows the potential of fabricating electrically conductive fabrics using waste wool fibres and graphene that can be used in different application fields.

scholarly journals Nucleating agents based on graphene and graphene oxide for crystallization of the β-form of isotactic polypropylene

2019 ◽  
Vol 55 (4) ◽  
pp. 1436-1450 ◽  
Author(s):  
Jan Broda ◽  
Marcin Baczek ◽  
Janusz Fabia ◽  
Dorota Binias ◽  
Ryszard Fryczkowski
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Isotactic Polypropylene ◽  
Reduced Form ◽  
Pimelic Acid ◽  
Nucleating Agents ◽  
Scanning Calorimetry ◽  
Functionalized Graphene Oxide ◽  
Reduced Graphene ◽  
Carboxylic Groups

Abstract During the investigations, functionalization of graphene oxide synthesized using modified Hummers’ method and its reduced form was performed. Mixtures of graphene oxide and reduced graphene oxide with pimelic acid and calcium hydroxide were prepared for functionalization. During the reaction, the molecules of pimelic acid were attached to the surface of graphene sheets. By forming links between the carboxylic groups of pimelic acid and graphene oxide, the durable connection was achieved. The functionalized graphene oxide and the reduced graphene oxide were used as additives in isotactic polypropylene crystallization. The influence of additives on crystallisation in non-isothermal conditions was examined using polarized optical microscopy and differential scanning calorimetry. The effect of the additives on the polypropylene structure was analysed using wide-angle X-ray scattering. For both functionalized compounds, the nucleating ability towards β-form of polypropylene was detected. Both additives showed the increase in the nucleation rate and promotion of growth of the β-form crystals. Nucleation efficiency similar to other nucleating agents used in the crystallization of the β-form of polypropylene was revealed.

Simultaneous surface functionalization and reduction of graphene oxide with octadecylamine for electrically conductive polystyrene composites

Carbon ◽  
2011 ◽  
Vol 49 (14) ◽  
pp. 4724-4730 ◽  
Author(s):  
Wenjuan Li ◽  
Xiu-Zhi Tang ◽  
Hao-Bin Zhang ◽  
Zhi-Guo Jiang ◽  
Zhong-Zhen Yu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Surface Functionalization ◽  
Electrically Conductive

Facile synthesis of silver-decorated reduced graphene oxide as a hybrid filler material for electrically conductive polymer composites

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15070-15076 ◽  
Author(s):  
Linxiang He ◽  
Sie Chin Tjong
Keyword(s):  
Graphene Oxide ◽  
Polymer Composites ◽  
Reduced Graphene Oxide ◽  
Graphite Oxide ◽  
Conductive Polymer ◽  
Facile Synthesis ◽  
Hybrid Filler ◽  
Electrically Conductive ◽  
Conductive Polymer Composites ◽  
Reduced Graphene

Nano silver-decorated reduced graphene oxide (Ag–RGO) sheets were synthesized by simply dissolving graphite oxide and silver nitrate inN,N-dimethylformamide and keeping the suspension at 90 °C for 12 h.

A novel wet-spinning method of manufacturing continuous bio-inspired composites based on graphene oxide and sodium alginate

Nano Research ◽  
2016 ◽  
Vol 9 (3) ◽  
pp. 735-744 ◽  
Author(s):  
Xiaozhen Hu ◽  
Sangeetha Rajendran ◽  
Yuansi Yao ◽  
Zheng Liu ◽  
Karthikeyan Gopalsamy ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Sodium Alginate ◽  
Wet Spinning

The solvent-free mechanochemical synthesis of mildly oxidized graphene oxide and its application as a novel conductive surfactant

2019 ◽  
Vol 43 (18) ◽  
pp. 7057-7064 ◽  
Author(s):  
Jianhui Chen ◽  
Wufeng Chen ◽  
Dongcheng Song ◽  
Bin Lai ◽  
Yuanyuan Sheng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Mechanochemical Synthesis ◽  
Solvent Free ◽  
Electrically Conductive

A solvent-free mechanochemical synthetic mildly oxidized graphene oxide (MOGO) can act as an electrically conductive surfactant for dispersing nanoparticles.

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