Moisture management and wicking properties of polyester- cotton plated knits

Effect of yarn linear density on moisture management and wicking properties of polyester-cotton plated knit structures has been studied. Linear density of yarns used in inner and outer layer as well as the difference in the yarn linear density for the two layers have been found to affect the liquid transfer from inner to outer layer, liquid spreading in the outer layer and hence the drying ability of the designed fabrics. Wetting time increases, while decrease in absorption rate and spreading speed is observed with the increase in inner and outer layer yarn linear density. The fabrics are graded and classified based on the obtained moisture management indices. Trans planar wicking is found higher for fabrics with greater difference in linear density between inner and outer layers as a result of selection of finer yarns in inner layer

Comfort properties of plated knitted fabrics with varying fibre type

The present study aims to investigate the effect of fibre type and yarn linear density on the thermal properties such as thermal resistance, thermal conductivity and thermal absorptivity along with air permeability and moisture vapor transmission rate of single jersey plated fabrics. Plated fabrics with nylon in the next to skin layer seem suitable choice for warm conditions as these fabrics would feel cooler on initial skin contact owing to high thermal absorptivity and are permeable to passage of air and moisture vapor. Fabrics knitted with yarns of high linear density seem unsuitable in warm conditions owing to higher value of thermal resistance and lower values of air permeability and moisture vapor transmission rate. Two way analysis of variance is conducted to test the significance of categorical variables, i.e. fibre type and yarn linear density on dependent variables. All the dependent variables except thermal resistance are found to be affected by the categorical variables at 95% confidence intervals

Liquid transfer properties and drying behavior of plated knitted fabrics with varying fibre types

The present study aims at investigating the effect of face yarn linear density and back layer fibre type on the liquid transfer properties and drying behavior of single jersey plated knitted fabrics. Fabrics knitted with coarser yarns exhibit high water absorbency, slow drying capability (characterized by lower water evaporation percentage) and appear to be unsuitable for high activity levels. Polypropylene/cotton fabric is found to be the preferred choice at high activity levels owing to lower water absorption, higher trans planar wicking and higher water evaporation percentage. Plated fabrics with nylon in the next to skin layer show high water absorption, poor trans planar wicking and slow drying capability. Nylon/cotton fabrics are, therefore, found to be ineffective in providing dry microclimate next to skin and may not be suitable at high activity levels

Prediction of thermo-physiological properties of plated knits by different neural network architectures

Thermo-physiological properties of polyester-cotton plated knits have been predicted using two different network architectures (NA1 & NA2). NA1 consists of four individual networks working in tandem with common set of inputs and NA2 consists of one network giving four outputs. It is found that network architecture NA1 is able to predict the thermo-physiological properties of plated fabrics better as compared to NA2 network architecture. Sensitivity analysis is performed to judge the sensitivity or the importance of each input parameter in determining thermo-physiological properties of plated fabrics. The most sensitive parameter in prediction of thermal resistance is total yarn linear density, filament fineness for thermal absorptivity, loop length for air permeability and moisture vapour transmission rate

Effect of fibre, yarn and fabric variables on heat and moisture transport properties of plated knit

In this study, the effect of fibre, yarn and fabric variables on heat and moisture transport properties of single jersey plated fabrics has been studied. Thermal properties, air permeability as well as moisture vapor and liquid transport properties of fabrics are found to be affected by fibre types, yarn linear density and fabric loop length. Slack fabrics knitted at longer loop length and with finer yarns in the inner layer show lower thermal insulation and are suitable choice as summer wear due to improved permeability of fabrics to air and moisture vapor. Cotton/viscose fabrics show better liquid transport properties along with the highest air and moisture vapor permeability, thereby resulting in rapid liquid dissipation and dry feel next to skin. The designed fabrics are thus suitable for use when an individual is involved in strenuous physical activity

Early outcomes after small incision lenticule extraction and photorefractive keratectomy for correction of high myopia

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Effect of location of opening incision on astigmatic correction after small-incision lenticule extraction

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Moisture management properties of ring vis a vis rotor yarn plated knit structures

The present investigation aims at studying the moisture management properties of polyester-cotton plated fabrics of ring vis a vis rotor yarns. Ring yarn fabrics exhibit higher moisture vapour transmission rate, trans planar wicking, lower wetting time and higher one way transport capacity as compared to rotor yarn fabrics, making the former suitable where body needs to dissipate sweat both in vapour and liquid forms, with respect to fabrics using combination of rotor-spun cotton yarns, which show higher absorbent capacity and would be slow drying with poor one way transport capacity. The study helps us to conclude that yarn spinning system plays an important role in influencing moisture management properties of fabrics intended for next to skin applications.

Moisture management properties of ring vis a vis rotor yarn plated knit structures

48-51The present investigation aims at studying the moisture management properties of polyester-cotton plated fabrics of ring vis a vis rotor yarns. Ring yarn fabrics exhibit higher moisture vapour transmission rate, trans planar wicking, lower wetting time and higher one way transport capacity as compared to rotor yarn fabrics, making the former suitable where body needs to dissipate sweat both in vapour and liquid forms, with respect to fabrics using combination of rotor-spun cotton yarns, which show higher absorbent capacity and would be slow drying with poor one way transport capacity. The study helps us to conclude that yarn spinning system plays an important role in influencing moisture management properties of fabrics intended for next to skin applications

Comparison of the Early Clinical Outcomes between Combined Small-Incision Lenticule Extraction and Collagen Cross-Linking versus SMILE for Myopia

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