Crystal structure and elastic constants of Dharwar cotton fibre using WAXS data

Samir, O. M.; Somashekar, R.

doi:10.1007/s12034-007-0079-5

Cited by 10 publications

(5 citation statements)

References 26 publications

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“…From the Le Bail refinement, the unit-cell parameters were estimated as a = 7.607 Å, b = 10.7441 Å, c = 8.1274 Å, and β = 87.49°, in accordance with literature. 53,54 The presence of silica in the functional textiles is visualized by the decrease of the characteristic peaks of cotton (002), (101) and (110;011) due to the superimposition with the (111) broad peak from the amorphous silica (at 2θ ≈ 22.4°). 55 Taking into account the quantity of silica phase, the amount of nanomaterial incorporated in the hybrid fabrics is in the range of 21À31%.…”

Section: Hydrophobicity and Oleophobicity Properties Of F13-mentioning

confidence: 99%

Designing Novel Hybrid Materials by One-Pot Co-condensation: From Hydrophobic Mesoporous Silica Nanoparticles to Superamphiphobic Cotton Textiles

Pereira

Alves

Monteiro

et al. 2011

ACS Appl. Mater. Interfaces

151

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This work reports the synthesis and characterization of mesoporous silica nanoparticles (MSNs) functionalized with tridecafluorooctyltriethoxysilane (F13) and their in situ incorporation onto cotton textiles. The hybrid MSNs and the functional textiles were prepared by a one-pot co-condensation methodology between tetraethylorthosilicate (TEOS) and F13, with hexadecyltrimethylammonium chloride (CTAC) as the template and triethanolamine as the base. The influence of the F13 to TEOS molar ratio (1:10, 1:5 and 1:3) on the nanoparticle morphology, porosity, degree of functionalization, and hydro/oleophobic properties is discussed. The hybrid nanosilicas presented high colloidal stability and were spherical and monodispersed with average particle size of ∼45 nm. They also showed high surface areas, large pore volumes, and a wormhole-type mesoporous structure. The increase in the organosilane proportion during the co-condensation process led to a more radially branched wormhole-like mesoporosity, a decrease in the surface area, pore volume, and amount of surface silanol groups, and an enrichment of the surface with fluorocarbon moieties. These changes imparted hydrophobic and oleophobic properties to the materials, especially to that containing the highest F13 loading. Cotton textiles were coated with the F13-MSNs through an efficient and less time-consuming route. The combination between surface roughness and mesoporosity imparted by the MSNs, and the low surface energy provided by the organosilane resulted in superhydrophobic functional textiles. Moreover, the textile with the highest loading of fluorocarbon groups was superamphiphobic.

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Section: Hydrophobicity and Oleophobicity Properties Of F13-mentioning

confidence: 99%

Designing Novel Hybrid Materials by One-Pot Co-condensation: From Hydrophobic Mesoporous Silica Nanoparticles to Superamphiphobic Cotton Textiles

Pereira

Alves

Monteiro

et al. 2011

ACS Appl. Mater. Interfaces

151

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“…Employing this technique, it is presently conceivable to make a precise atomic model in a unit cell by contributing the mandatory parameters of this sub-atomic structure into the program. For the procedures and methods, we referred to our earlier article [1], the obtained molecular model of Suvin cotton fibre is shown in Fig. 2 and the packing structure along a, b, and c axis are as shown in Fig.…”

Section: Linked Atom Least Squares (Lals) Programmentioning

confidence: 99%

“…It is the ratio of uniaxial stress to the uniaxial strain along a unit vector u [22] and it is the directional dependent and expressed in Fig. 4 for Suvin cotton fibre, where the surface compares to the spherical plot of E(u) acquired from the condition - (1) The maximum and minimum value of Young's modulus represented in Table 5 and is due to the direction compression or tension. Fig.…”

Section: Young's Modulus (E)mentioning

confidence: 99%

“…Cotton fibres are fascinating because of their many positive advantages and are extensively used in the textile industry for more than 3000 years and are the third most widely produced agricultural and industrial crop [1][2][3]. Among natural fibres, cotton is the top chosen fibre due to its fibre strength, comfort, and ability to absorb moisture [4].…”

Section: Introductionmentioning

confidence: 99%

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Studies on Structure and Elasto-Mechanical Properties of Suvin Cotton Fibre

2020

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The comprehensive elastic properties of Suvin cotton fibre have been estimated. The Linked Atom Least Square method (LALS) technique has been employed to compute the structural properties using the X-ray diffraction data. Using Treloar’s assumptions the elastic stiffness matrix |Cij| has been calculated, then by utilizing the Voigt theory the elastic constants like Young’s modulus (E), Bulk modulus (K), Shear modulus (G), Poisson’s ratio (ν) and linear compressibility (β) have been estimated. Further, the experimental results of elastic constants are obtained and compared with the computed results and a broad correlation between them has been observed. ELATE web application tool is used to obtain the 3-dimensional images of variation of elastic constants along their spatial axes. From these figures an attempt has been made to explain the anisotropic mechanical property with respect to directional dependent Young’s modulus (E) and Shear modulus properties (G).

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“…Further, a number of studies on the crystal and molecular structure of the conventional cotton fibres are being extensively studied and reported by various authors (Abhishek et al 2005;Divakara, Niranjana, & Somashekar, 2009;Samir & Somashekar, 2007a, 2007bSamir, Gopala, & Somashekar, 2007;Samir, Madhu, & Somashekar, 2010). However, we observe that similar studies on the organic cotton fibres are not reported.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the conventional and organic cotton fibres

Babu

Selvadass

Somashekar

2013

Journal of The Textile Institute

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The characterization of the conventional and organic cotton fibres to understand the differences present between them is presented. The cotton fibres were characterized for their fibre properties such as the surface morphology, surface chemical composition, surface elemental composition and internal fibre structure. The results show that the surface morphology and surface chemical composition of both the cotton fibres are similar. The surface elemental composition of both the cotton fibres shows that organic cotton fibres have higher percentage of metals than the conventional cotton fibres. Based on the FTIR spectrum analysis, it is observed that the organic cotton fibres may have a higher proportion of representative groups compared to that of the conventional cotton fibres. The fraction of I α and I β cellulose shows that I β cellulose dominates in both cotton fibres. The crystallinity of both the cotton fibres was determined using the wide angle X-ray diffraction data. The results show that crystallinity of both fibres is similar.

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Crystal structure and elastic constants of Dharwar cotton fibre using WAXS data

Cited by 10 publications

References 26 publications

Designing Novel Hybrid Materials by One-Pot Co-condensation: From Hydrophobic Mesoporous Silica Nanoparticles to Superamphiphobic Cotton Textiles

Designing Novel Hybrid Materials by One-Pot Co-condensation: From Hydrophobic Mesoporous Silica Nanoparticles to Superamphiphobic Cotton Textiles

Studies on Structure and Elasto-Mechanical Properties of Suvin Cotton Fibre

Characterization of the conventional and organic cotton fibres

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