Electrokinetic analysis of hydroentangled greige cotton–synthetic fiber blends for absorbent technologies

Edwards, V.W.; Condon, Brian; Sawhney, Paul; Reynolds, Michael; Allen, Chuck; Nam, Sunghyun; Bopp, Alvin; Chen, Jonathan; Prevost, Nicolette

doi:10.1177/0040517513483856

Cited by 4 publications

(19 citation statements)

References 17 publications

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“…The ζ potential is taken from a titration as previously shown [12][13][14] that assesses the surface charge based on pH and the planar portion along the x-axis of the plot is designated as the zeta plateau value (ζ plateau ), which is a reflection of the relative hydrophilic versus hydrophobic character of the fabric. The ζ potentials reported here are consistent with the previously reported ζ potential titrations for both absorbent incontinence layers and greige cotton nonwoven incontinence topsheet and acquisition distribution layer prototypes [10,11]. Figure 2 shows the relationship between % moisture content and swelling behavior (Δζ) of the cotton blends.…”

Section: Fabric Surface Polaritysupporting

confidence: 89%

“…The increased swelling and relatively constant value for water uptake shown in Figure 2 can be contrasted with absorbency properties, as shown for the cotton blends in Table 3. As seen in Table 3, the ASTM sink time measurement (an indirect measurement of the material's swelling properties) principally correlates with material density in contrast with previous observations in that it correlates with swelling in greige cotton/polyester blends [10]. Swelling and rate of swelling of fabric blends are noticeably increased by blending cleaned greige cotton with by-products at a 60/40 ratio.…”

Section: Fabric Surface Polaritymentioning

confidence: 65%

“…In combination with surface-exposed cellulose from nonwoven hydroentanglement process conditions, unique fiber properties are retained when compared to scoured and bleached cotton. The amphiphilic surface character in nonwoven greige cotton, which is a combination of the polarity balance between the hydrophilic and the hydrophobic elements of the cotton material, is suitable for the application to the material layer components of incontinence absorbent products and wipes [10].…”

Section: Absorbent Applicationsmentioning

confidence: 99%

“…Nonwoven greige cotton compares well with other commercial materials when analyzed for its performance as an incontinence layer surrounding the absorbent core. Moreover, when combined with synthetic fibers like polyester and polypropylene, greige cotton/synthetic blends possess an added scope of utilization in this regard [10]…”

Section: Absorbent Applicationsmentioning

confidence: 99%

“…The three constituent cotton fibers employed in the nonwovens were evaluated for their relative cellulosic crystallinity in relation to their moisture uptake properties. Some of the blends also included polyester fibers for comparison as were previously examined [10]. Two different measures of moisture uptake are also reported.…”

Section: Fabric Surface Properties and Electrokinetic Analysismentioning

confidence: 99%

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An Assessment of Surface Properties and Moisture Uptake of Nonwoven Fabrics from Ginning By-products

Edwards¹,

Sawhney²,

Bopp³

et al. 2015

Cellulose - Fundamental Aspects and Current Trends

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Greige raw cotton by-products resulting from cotton ginning and mill processes have long been bleached for use in absorbent nonwoven products. The potential to use greige cotton by-products as an economical source for absorbent nonwoven blends is explored. The nonwoven hydroentanglement of greige cotton lint with cotton gin motes and comber noils blends was analyzed for fiber surface polarity, swelling, and absorbance to assess properties with potential usefulness in absorbent nonwovens. The electrokinetic analysis of the fabric surface gives a composite picture of the relative hydrophilic/hydrophobic polarity absorbency and swelling properties. Nonwoven fabrics made with cleaned greige cotton lint separately blended with comber noils and ginning motes at and blend ratios demonstrated charge, swell, and percent moisture uptake profiles that are characteristic of the fabrics' crystalline/amorphous cellulosic content with some variance in swelling properties. However, cellulose crystallite size varied. X-ray diffraction patterns of the three different cotton constituents displayed similar crystalline cellulose compositions. "n electrochemical double-layer analysis of charge based on a pH titration ζ plateau was employed to measure the relative fiber and fabric surface polarity which varied slightly between -and -mV. " relationship of fiber swelling ∆ζ and percent moisture content is apparent when greige cotton lint and other fibers are blended. The blended nonwoven materials possess absorbent properties characterized by similar moisture uptake . -. % and fiber polarity, but some variation in swelling is based on the by-product additive and its percent content. The crystallinity, electrokinetic, and water binding properties of the nonwoven by-product materials are discussed in the context of the molecular features water, cellulose, and greige cotton components that enhance potential uses as absorbent nonwoven end-use products.

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Section: Fabric Surface Polaritysupporting

confidence: 89%

Section: Fabric Surface Polaritymentioning

confidence: 65%

Section: Absorbent Applicationsmentioning

confidence: 99%

Section: Absorbent Applicationsmentioning

confidence: 99%

Section: Fabric Surface Properties and Electrokinetic Analysismentioning

confidence: 99%

See 3 more Smart Citations

An Assessment of Surface Properties and Moisture Uptake of Nonwoven Fabrics from Ginning By-products

Edwards¹,

Sawhney²,

Bopp³

et al. 2015

Cellulose - Fundamental Aspects and Current Trends

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Designing cellulosic and nanocellulosic sensors for interface with a protease sequestrant wound-dressing prototype: Implications of material selection for dressing and protease sensor design

et al. 2017

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Interfacing nanocellulosic-based biosensors with chronic wound dressings for protease point of care diagnostics combines functional material properties of high specific surface area, appropriate surface charge, and hydrophilicity with biocompatibility to the wound environment. Combining a protease sensor with a dressing is consistent with the concept of an intelligent dressing, which has been a goal of wound-dressing design for more than a quarter century. We present here biosensors with a nanocellulosic transducer surface (nanocrystals, nanocellulose composites, and nanocellulosic aerogels) immobilized with a fluorescent elastase tripeptide or tetrapeptide biomolecule, which has selectivity and affinity for human neutrophil elastase present in chronic wound fluid. The specific surface area of the materials correlates with a greater loading of the elastase peptide substrate. Nitrogen adsorption and mercury intrusion studies revealed gas permeable systems with different porosities (28-98%) and pore sizes (2-50 nm, 210 µm) respectively, which influence water vapor transmission rates. A correlation between zeta potential values and the degree of protease sequestration imply that the greater the negative surface charge of the nanomaterials, the greater the sequestration of positively charged neutrophil proteases. The biosensors gave detection sensitivities of 0.015-0.13 units/ml, which are at detectable human neutrophil elastase levels present in chronic wound fluid. Thus, the physical and interactive biochemical properties of the nano-based biosensors are suitable for interfacing with protease sequestrant prototype wound dressings. A discussion of the relevance of protease sensors and cellulose nanomaterials to current chronic wound dressing design and technology is included.

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Fluid handling and fabric handle profiles of hydroentangled greige cotton and spunbond polypropylene nonwoven topsheets

Edwards

Mao

Russell

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part L:

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Wettable nonwoven topsheets are traditionally spunbond polypropylene nonwoven fabrics. The fluid handling performance of hydroentangled greige cotton nonwovens was studied to determine their suitability for topsheet applications based upon analysis of fluid rewet, strikethrough, and acquisition properties; and the relative contributions of nonwoven cotton's cellulosic and wax components to hydrophobic and hydrophilic fluid transport properties are addressed. It was observed that mechanically cleaned greige cotton nonwovens exhibit certain fluid handling properties that are similar to polypropylene spunbond-meltblown topsheets, partly as a result of the residual wax content.Subsequently, the surface polarity, swelling, and moisture uptake of 100% greige cotton and 50:50 blends of greige cotton and polypropylene hydroentangled nonwovens were studied in comparison with the performance of a commercially available 100% polypropylene spunbond-meltblown topsheets. The surface polarity, swelling, and wettability values obtained from electrokinetic and water contact angle analysis were found to be in agreement with the hydrophobic polypropylene topsheets. Additionally, comfort assessment was undertaken based upon fabric handle profiles using the Leeds University Fabric Handle Evaluation System, which is an objective evaluation based on the quantification of fabric buckling deformations. Of the fabrics studied in this work, 50:50 greige cotton/polypropylene hydroentangled fabrics were the softest as determined by the Leeds University Fabric Handle Evaluation System and exhibited fluid handling properties consistent with the requirements of commercial topsheets.

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Electrokinetic analysis of hydroentangled greige cotton–synthetic fiber blends for absorbent technologies

Cited by 4 publications

References 17 publications

An Assessment of Surface Properties and Moisture Uptake of Nonwoven Fabrics from Ginning By-products

An Assessment of Surface Properties and Moisture Uptake of Nonwoven Fabrics from Ginning By-products

Designing cellulosic and nanocellulosic sensors for interface with a protease sequestrant wound-dressing prototype: Implications of material selection for dressing and protease sensor design

Fluid handling and fabric handle profiles of hydroentangled greige cotton and spunbond polypropylene nonwoven topsheets

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