Moisture transfer properties of bifacial fabrics

2016 ◽  
Vol 87 (9) ◽  
pp. 1096-1106 ◽  
Author(s):  
Licheng Zhu ◽  
Maryam Naebe ◽  
Ian Blanchonette ◽  
Xungai Wang
Keyword(s):  
Moisture Transfer ◽  
Contact Angles ◽  
Woven Fabrics ◽  
The Other ◽  
Woven Fabric ◽  
Water Contact ◽  
Moisture Management ◽  
Knitted Structure ◽  
Woven Structure ◽  
Transfer Properties

Many biological plants have bifacial leaves with an adaxial surface and an abaxial surface. These two surfaces can often have different morphologies and properties, and they serve different functions in plant growth. This has inspired us to develop novel bifacial fabrics, with a knitted structure on one face and a woven structure on the other. Bifacial fabrics were produced on a purpose-built machine, using wool, acrylic and polyester yarns, with the woven structure being plain weave, and the knitted structure being single jersey. In this study, the moisture properties of these fabrics were compared with conventional woven and knitted fabrics. The water contact angles of the bifacial fabrics were similar to knitted and woven fabrics, but the absorption time on the woven fabric was much higher than the other fabrics. Liquid moisture transfer properties on both faces of the bifacial fabrics were different, with water spreading and absorption on the woven face being quicker than on the knitted face. These unique properties of bifacial fabrics show that these fabrics could be used as moisture management fabrics, without the need for any additional treatments.

Heat transfer properties of bifacial fabrics

2016 ◽  
Vol 87 (19) ◽  
pp. 2307-2313 ◽  
Author(s):  
Licheng Zhu ◽  
Maryam Naebe ◽  
Ian Blanchonette ◽  
Xungai Wang
Keyword(s):  
Heat Transfer ◽  
Thermal Resistance ◽  
Air Permeability ◽  
Woven Fabrics ◽  
Knitted Fabrics ◽  
Plain Weave ◽  
Knitted Structure ◽  
Woven Structure ◽  
Transfer Properties ◽  
Single Jersey

Bifacial fabrics were produced on a purpose-built machine, using wool, acrylic and polyester yarns, with the woven structure being plain weave, and the knitted structure being single jersey. In this study, the heat transfer properties of these fabrics were compared with conventional woven and knitted fabrics. The bifacial fabrics had lower air permeability than knitted and woven fabrics, and they were warmer to touch. The thermal resistance of the bifacial fabrics was higher than the knitted and woven fabrics, and the thermal resistance of the two faces of the bifacial fabrics was statistically different.

scholarly journals Characteristics of Knitted Structures Produced by Engineered Polyester Yarns and Their Blends in Terms of Thermal Comfort

2015 ◽  
Vol 10 (1) ◽  
pp. 155892501501000 ◽  
Author(s):  
Nida Oğlakcioğlu ◽  
Ahmet Çay ◽  
Arzu Marmarali ◽  
Emel Mert
Keyword(s):  
Water Vapor ◽  
Thermal Comfort ◽  
Moisture Transfer ◽  
Water Vapor Permeability ◽  
Air Permeability ◽  
Vapor Permeability ◽  
Moisture Management ◽  
Thermal Comfort Properties ◽  
Knitted Structure ◽  
Drying Properties

Engineered yarns are used to provide better clothing comfort for summer garments because of their high levels of moisture and water vapor management. The aim of this study was to investigate the characteristics of knitted structures that were produced using different types of polyester yarns in order to achieve better thermal comfort properties for summer clothing. However they are relatively expensive. Therefore, in this study engineered polyester yarns were combined with cotton and lyocell yarns by plying. This way, the pronounced characteristics of these yarns were added to the knitted structure as well. Channeled polyester, hollow polyester, channeled/hollow blended polyester, cotton, and lyocell yarns were plied with each other and themselves. Then, single jersey structures were knitted using these ply yarn combinations and air permeability, thermal resistance, thermal absorptivity, water vapor permeability, moisture management, and drying properties were tested. The results indicate that channeled PES fabrics are advantageous for hot climates and high physical activities with regards to high permeability and moisture transfer and also to fast drying properties. Besides, air permeability and thermal properties improved through the combination of lyocell yarn with engineered polyester yarns. However, the use of lyocell or cotton with engineered yarns resulted in a to a decrease in moisture management properties and an increase in drying times

scholarly journals Benefits of Nonthermal Atmospheric Plasma Treatment on Dentin Adhesion

2018 ◽  
Vol 43 (6) ◽  
pp. E288-E299 ◽  
Author(s):  
AP Ayres ◽  
PH Freitas ◽  
J De Munck ◽  
A Vananroye ◽  
C Clasen ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Water Storage ◽  
Contact Angles ◽  
The Other ◽  
Atmospheric Plasma ◽  
Hybrid Layer ◽  
Water Contact ◽  
Dentin Surface

SUMMARY Objectives: This study aimed to evaluate the influence of two nonthermal atmospheric plasma (NTAP) application times and two storage times on the microtensile bond strength (μTBS) to dentin. The influence of NTAP on the mechanical properties of the dentin-resin interface was studied by analyzing nanohardness (NH) and Young's modulus (YM). Water contact angles of pretreated dentin and hydroxyapatite blocks were also measured to assess possible alterations in the surface hydrophilicity upon NTAP. Methods and Materials: Forty-eight human molars were used in a split-tooth design (n=8). Midcoronal exposed dentin was flattened by a 600-grit SiC paper. One-half of each dentin surface received phosphoric acid conditioning, while the other half was covered with a metallic barrier and remained unetched. Afterward, NTAP was applied on the entire dentin surface (etched or not) for 10 or 30 seconds. The control groups did not receive NTAP treatment. Scotchbond Universal (SBU; 3M ESPE) and a resin-based composite were applied to dentin following the manufacturer's instructions. After 24 hours of water storage at 37°C, the specimens were sectioned perpendicular to the interface to obtain approximately six specimens or bonded beams (approximately 0.9 mm2 in cross-sectional area) representing the etch-and-rinse (ER) approach and another six specimens representing the self-etch (SE) approach. Half of the μTBS specimens were immediately loaded until failure, while the other half were first stored in deionized water for two years. Three other bonded teeth were selected from each group (n=3) for NH and YM evaluation. Water contact-angle analysis was conducted using a CAM200 (KSV Nima) goniometer. Droplet images of dentin and hydroxyapatite surfaces with or without 10 or 30 seconds of plasma treatment were captured at different water-deposition times (5 to 55 seconds). Results: Two-way analysis of variance revealed significant differences in μTBS of SBU to dentin after two years of water storage in the SE approach, without differences among treatments. After two years of water aging, the ER control and ER NTAP 10-second groups showed lower μTBS means compared with the ER NTAP 30-second treated group. Nonthermal atmospheric plasma resulted in higher NH and YM for the hybrid layer. The influence of plasma treatment in hydrophilicity was more evident in the hydroxyapatite samples. Dentin hydrophilicity increased slightly after 10 seconds of NTAP, but the difference was higher when the plasma was used for 30 seconds. Conclusions: Dentin NTAP treatment for 30 seconds contributed to higher μTBS after two years of water storage in the ER approach, while no difference was observed among treatments in the SE evaluation. This result might be correlated to the increase in nanohardness and Young's modulus of the hybrid layer and to better adhesive infiltration, since dentin hydrophilicity was also improved. Although some effects were observed using NTAP for 10 seconds, the results suggest that 30 seconds is the most indicated treatment time.

scholarly journals Investigating the Performance of Sewn Seams from Woven Fabrics

2021 ◽  
Author(s):  
Md. Shamsuzzaman
Keyword(s):  
Breaking Strength ◽  
Research Work ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Sewing Thread ◽  
Fabric Strength ◽  
Woven Structures ◽  
Thread Strength ◽  
Woven Structure ◽  
Thread Count

Abstract Seam performance ensures the durability, attractiveness, strength etc. of the sewn garments. Fabric types, fabric densities, fabric strength, seam types, sewing thread count, thread strength, stitch densities and stitch types influence the performance of a sewn seam. This paper investigates the performance of sewn seam of various structure of woven fabric. The variables of this research are stitch densities (SPI), sewing thread count, seam types and woven structures. We conduct our research over plain, twill 2/1, twill 2/2, oxford and poplin woven structure. Firstly, we apply lockstitch (301) to produce superimposed, lapped and bound seam on the woven sample by using thread count 27 Tex, 30 Tex, 20/2 Tex, 40 Tex, 40/2 Tex, 40/3 Tex having stitch densities (SPI) 8, 10 and 12. Then according to ASTM D1683 standard, we measured the tensile strength test and recorded the seam breaking strength (N). We apply error bars over each diagram to investigate the standard deviation. Finally, we discuss four hypothesis to conclude our research work. We found higher seam breaking strength with the increase of thread count and SPI. The bound seam samples has shown superior seam breaking strength than superimposed and lapped seam; poplin structure surpassed to others. The seam efficiency of the samples varies from 60–90% and do not exceeds 100%. Finally, we found some significant alternatives hypothesis of the population since F values exceeded F critical values for the sewn seam.

Effect of a Hydrophobic Finishing on Moisture Management Performance of Cotton Fabric

2011 ◽  
Vol 331 ◽  
pp. 237-240 ◽  
Author(s):  
Tian Hong He ◽  
Jin Bo Yao ◽  
Su Ying Chen
Keyword(s):  
Cotton Fabric ◽  
Moisture Transfer ◽  
Management Performance ◽  
Moisture Management ◽  
Clothing Comfort ◽  
Transfer Properties

Moisture transfer properties in fabric are critical to determine the thermal and sensorial comfort. Cotton fabric possesses many desirable characteristics that contribute to clothing comfort. However, in hot and wet environment or during some activities that human perspiration occurs, high absorbency of cotton makes its use undesirable. In this study, a chemical finishing method is developed to increase liquid moisture transfer properties on cotton fabric or clothing. The moisture management properties of the finished fabric or clothing were evaluated by using moisture management tester. Further wear trials were conducted to verify the comfort feeling toward finished area and unfinished area, which showed that this technique can effectively improve the overall comfort sensation especially during prolonged perspiration.

Mechanical properties of bifacial fabrics

2017 ◽  
Vol 88 (12) ◽  
pp. 1335-1344 ◽  
Author(s):  
Licheng Zhu ◽  
Maryam Naebe ◽  
Ian Blanchonette ◽  
Xungai Wang
Keyword(s):  
Mechanical Properties ◽  
Abrasion Resistance ◽  
Qualitative Evaluation ◽  
Woven Fabrics ◽  
Knitted Structure ◽  
Number Of Cycles ◽  
Bending Length ◽  
Woven Structure ◽  
Single Jersey ◽  
Better Than

This study focuses on the qualitative evaluation of the mechanical properties of bifacial fabrics, which have a knitted structure on one face and a woven structure on the other. Woven, knitted, and bifacial fabrics were produced on a purpose-built machine, using wool/acrylic and polyester yarns. The bifacial fabric was manufactured with the woven structure being a plain weave and the knitted structure being a single jersey. The results of load–extension test showed unique tensile behavior, with two breakages in both the warp and weft directions, representing the woven and knitted structures. The bending length of the bifacial fabric in the weft direction with its knitted face up was smaller than that in the warp direction, and the bending length in the warp direction with its knitted face up was similar to that in two directions with the woven face up. The bifacial fabric demonstrated unique abrasion resistance on two faces, combining the performance of the knitted and woven fabrics in abrasion resistance. The abrasion resistance on the woven face was better than that on the knitted face. The knitted face of the bifacial fabric generally pilled less than the knitted fabric after abrasion over a certain number of cycles.

Two-layer fabrics for moisture management

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Nilhan Niles ◽  
Sandun Fernando ◽  
Nipuni Rathnayake ◽  
Ayesha Hewamalavi ◽  
Samudika Weerasinghe
Keyword(s):  
Outer Layer ◽  
Small And Medium Enterprises ◽  
Low Cost ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Content Type ◽  
Smart Fabrics ◽  
Moisture Management ◽  
Medium Enterprises ◽  
Fabric Structures

Purpose Woven fabrics have been popularised in use owing to their superior properties and functionality. Today, weavers strive to add value to their product to be competitive and to secure profit in performance fabrics such as technical fabrics, smart fabrics and sportswear fabrics. Over the years, fabrics with special properties such as moisture management have gained higher demand. In this context, multi-layer fabrics provide a reasonable solution to the demand. Design/methodology/approach An attempt was made to develop two-layer fabrics with different compositions and properties. A two-layer woven fabric was produced using handloom weaving, with a hydrophobic inner layer and hydrophilic outer layer, the two layers being attached together using different stitching methods. Different fabric structures and yarn counts were used to achieve the objectives. Findings Experiments carried out verified the suitability of the developed fabric for effective moisture management. It was found that a fabric with a 100% cotton outer layer and 100% polyester inner layer, both layers of 2 × 2 matt weave, showed the best properties. Practical implications In the present COVID-19 pandemic situation, the use of masks in public has become mandatory in many countries. This research will help handloom manufacturers meet the need using simple methods. Originality/value This research uses handloom fabric. As such it provides an opportunity for small and medium enterprises to use available low-cost technology to develop fabric with superior properties.

Heat and mass transfer through outerwear clothing for protection from cold: influence of geometrical, structural and mass characteristics of the textile layers

2016 ◽  
Vol 87 (9) ◽  
pp. 1060-1070 ◽  
Author(s):  
Radostina A Angelova ◽  
Priscilla Reiners ◽  
Elena Georgieva ◽  
Hristina Plamenova Konova ◽  
Bianca Pruss ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Water Vapor ◽  
Heat And Mass Transfer ◽  
Unit Area ◽  
Water Vapor Permeability ◽  
Woven Fabric ◽  
Vapor Permeability ◽  
Regression Equations ◽  
Moisture Management ◽  
Transfer Properties

This paper presents a comprehensive experimental study, conducted on a series of woven and non-woven fabric samples from different materials (cotton, polyester, and polyamide) and 14 three-layer systems of textile materials, used for production of outerwear clothing for protection from cold. Heat and mass transfer properties, related to the thermophysiological comfort of the outerwear clothing, namely conductive thermal resistance, water vapor resistance, relative water vapor permeability, air permeability, accumulative one-way transport of liquids, and overall moisture management capacity, were determined for the system of layers and the compound single layers. The transfer properties of the single layers were presented as a function of their thickness, mass per unit area, and areal porosity. The transfer properties of the system of layers were presented as a function of the thickness, mass per unit area, and bulk density of the systems. Regression analysis was applied to derive regression equations. The results obtained allowed assessment of the existence and trend of the influence, as well as evaluation of the strength of the dependences.

scholarly journals Influence of Kind of Weft Yarn on Properties of the Seersucker Woven Fabrics

2016 ◽  
Vol 16 (4) ◽  
pp. 214-221 ◽  
Author(s):  
Małgorzata Matusiak ◽  
Łukasz Frącczak
Keyword(s):  
Standardized Testing ◽  
Laser Scanning ◽  
3D Structure ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Weft Yarn ◽  
3D Laser Scanning ◽  
Structure And Properties ◽  
Testing Methods ◽  
Woven Structure

Abstract Seersucker woven fabrics create a unique 3D woven structure. Such 3D structure is usually received on loom by an application of two warps of different tension. However, a kind of the weft yarn also significantly influences the structure and properties of the seersucker woven fabric. The paper presents an investigation of the seersucker fabrics made of the same set of warps and different weft yarns. The mechanical properties of the investigated fabrics were measured by means of the standardized testing methods. The structure of the fabric was assessed using the 3D laser scanning.

Liquid Wetting, Transport, and Retention Properties of Fibrous Assemblies: Part II: Water Wetting and Retention of 100% and Blended Woven Fabrics

1992 ◽  
Vol 62 (12) ◽  
pp. 697-704 ◽  
Author(s):  
You-Lo Hsieh ◽  
Bangling Yu ◽  
Mary Michelle Hartzell
Keyword(s):  
Fiber Type ◽  
Polymeric Materials ◽  
Contact Angles ◽  
Woven Fabrics ◽  
Chemical Compositions ◽  
Water Contact ◽  
Wetting Properties ◽  
Liquid Retention ◽  
Water Wetting ◽  
Fibrous Assemblies

The liquid wetting and retention properties of cotton, polyester, and their blends and other woven fabrics, each containing a single fiber type, were investigated using a previously established method. Several aspects of liquid retention properties of woven fabrics were discussed, i.e., distribution of liquid uptake, instantaneous liquid wetting and uptake, and steady-state liquid-holding capacity. The intrinsic liquid wetting behavior and liquid retention properties of fabrics are governed by different but interdependent substrata variables. As demonstrated by similar water contact angles obtained for films, fibers, and fabrics of the same polymer, the intrinsic wettability of fabrics depends on the chemical compositions of polymeric materials. Liquid retention, on the other hand, is governed by the pore structures as well as the wetting properties of the substrata.

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