scholarly journals Comparison of Moisture Management Properties of Plasma Treated Single Jersey Fabric with Different Types of Polyester Yarns

2019 ◽  
Vol 27 (1(133)) ◽  
pp. 32-36
Author(s):  
Vidya Thangavelu ◽  
Prakash Chidambaram
Keyword(s):  
Absorption Rate ◽  
Polyester Fabric ◽  
Spreading Speed ◽  
Moisture Management ◽  
Management Capacity ◽  
Different Types ◽  
Rate Maximum ◽  
Continuous Filament ◽  
Overall Performance ◽  
Single Jersey

In this study, the moisture management properties of plasma treated single jersey knitted fabric with different types of polyester yarns: spun polyester, continuous filament yarn and micro denier yarn with different linear densities were analysed and investigated. The moisture management properties of the same were measured using a moisture management tester. The results of the treated and untreated single jersey fabric were tested for their wetting time, absorption rate, maximum wetted radii, spreading speed, and overall moisture management capacity . It was observed that for the plasma treated fabrics, the time taken for wetting and the absorption rate of spun polyester are faster. Continuous filament polyester shows the maximum wetted radii, and the spreading speed and overall moisture management capacity (OMMC) of spun polyester significantly increases when compared with untreated fabrics. The plasma treatment significantly improved the overall performance of polyester fabric.

Examining the Overall Moisture Management Capability of Fabric-Foam-Fabric Plied Material

2018 ◽  
Vol 279 ◽  
pp. 109-112
Author(s):  
Chi Wai Kan ◽  
Clare Man Ching Ko ◽  
Nattadon Rungruangkitkrai ◽  
Nattaya Vuthiganond ◽  
Rattanaphol Mongkholrattanasit
Keyword(s):  
Absorption Rate ◽  
Close Contact ◽  
Polyurethane Foams ◽  
Test Method ◽  
Textile Material ◽  
Spreading Speed ◽  
Moisture Management ◽  
Management Capability ◽  
Intimate Apparel

Moisture management is an important behaviour during engineering of textile material. In case of intimate apparel (which is in close contact with skin), its moisture management property would affect the comfort behaviour during use. Fabric-foam-fabric plied materials are commonly used materials for making intimate apparel. In this study, we prepared different fabric-foam-fabric plied materials by plying polyurethane foams (non-laminated and laminated) with different fabrics. Their performance on absorption rate, accumulative one-way transport capability and spreading speed had been measured objectively in previous works using instrument (moisture management tester) according to AATCC Test Method 195. Based on the data, we can calculate the overall moisture management capability (OMMC) of the piled materials. Therefore, we reported the OMMC values of different plied samples and the results were discussed properly.

scholarly journals Investigation of Moisture Management and Air Permeability Properties of Fabrics with Linen and Linen-Polyester Blend Yarns

2018 ◽  
Vol 26 (4(130)) ◽  
pp. 39-47 ◽  
Author(s):  
Erhan Kenan Çeven ◽  
Gizem Karakan Günaydin
Keyword(s):  
Experimental Study ◽  
Absorption Rate ◽  
Structural Parameters ◽  
Air Permeability ◽  
Test Results ◽  
Warp Yarn ◽  
Significance Level ◽  
Moisture Management ◽  
Different Types ◽  
Wetting Time

This paper has focused on moisture management (MMT) and air permeability properties of fabrics produced from linen (100%) and linen-polyester yarns (80% polyester and 20% linen) at different weft densities. In the experimental study, eighteen different types of fabrics composed of six different weft yarns with three levels of weft density (weft density of 8,10 &12 pick/cm for 100% linen fabrics and 14,16,18 pick/cm for polyester-linen fabrics) were selected in order to determine the influence of weft density and yarn structural parameters (number of yarn folds) on moisture management as well as air permeability properties. The following weft yarns were selected: 104/1 tex, 104/2 tex & 104/3 tex for 100% linen and 41/1 tex, 41/2 tex & 41/3 tex for 80% Polyester – 20% linen fabrics, whereas the warp yarn was constant – 50/1 tex 100% linen for all fabric types. Satin type fabrics were subjected to moisture management tests and air permeability tests as well. According to test results, it was determined that some of the moisture management (wetting time, absorption rate (%/s) and one-way accumulative transport index of the fabrics’ top surfaces and bottom surfaces) and air permeability properties were significantly affected by the number of yarn folds and the weft density at a 0.05 significance level.

scholarly journals Comfort properties of nano-filament polyester fabrics: thermo-physiological evaluation

2018 ◽  
Vol 69 (04) ◽  
pp. 315-321 ◽  
Author(s):  
AZEEM MUSADDAQ ◽  
HES LUBOS ◽  
WIENER JAKUB ◽  
NOMAN MUHAMMAD TAYYAB ◽  
ALI AZAM ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Resistance ◽  
Cotton Fabric ◽  
Polyester Fabric ◽  
Moisture Management ◽  
Different Types ◽  
Physiological Evaluation ◽  
Thermal Comfort Properties ◽  
The Aesthetic ◽  
Thermal Absorptivity

Comfort along with the aesthetic properties of textile clothing in activewear and sportswear are utmost worthwhile for costumer demand as latest trends. Different types of fibers and yarns are being used to improve the moisture management and comfort of the fabric for next to skin. Nowadays, multifilaments or nano-filaments of polyester with diameters in the range of a few nanometers and lengths up to kilometers are used in different range of important technological applications such as functional fabrics, biomedicine, composite, etc. Multifilament polyester yarns are made by aggregating many continuous filaments together characterized by their high tenacity and large surface area per unit mass. The nano-filament yarn has also significant effects on thermal comfort properties as a nano-filament fabric has less thermal conductivity than cotton fabric, but equal to multichannel polyester fabric while nano-filament fabrics gave the cool feelings with higher thermal absorptivity. Moreover,coolmax fabric showed the higher value of thermal resistance as compared to nano-filament fabrics. Nano-filament fabrics exhibited higher value of watervaporpermeability than cotton fabric.

Bejan’s Constructal Theory Analysis of Gas-Liquid Cooled Finned Modules

2011 ◽  
Vol 133 (7) ◽  
Author(s):  
Giulio Lorenzini ◽  
Simone Moretti
Keyword(s):  
Thermal Behavior ◽  
Heat Exchangers ◽  
High Performance ◽  
Numerical Study ◽  
Constructal Theory ◽  
Electronic Components ◽  
Theory Analysis ◽  
Pressure Losses ◽  
Different Types ◽  
Overall Performance

High performance heat exchangers represent nowadays the key of success to go on with the trend of miniaturizing electronic components as requested by the industry. This numerical study, based on Bejan’s Constructal theory, analyzes the thermal behavior of heat removing fin modules, comparing their performances when operating with different types of fluids. In particular, the simulations involve air and water (as representative of gases and liquids), to understand the actual benefits of employing a less heat conductive fluid involving smaller pressure losses or vice versa. The analysis parameters typical of a Constructal description (such as conductance or Overall Performance Coefficient) show that significantly improved performances may be achieved when using water, even if an unavoidable increase in pressure losses affects the liquid-refrigerated case. Considering the overall performance: if the parameter called Relevance tends to 0, air prevails; if it tends to 1, water prevails; if its value is about 0.5, water prevails in most of the case studies.

scholarly journals Motion-Induced Imbalance of Contact Impedance in ECG Capture: Comparison of Electrode Materials in Capacitive Coupling

2020 ◽  
Author(s):  
Sebastian Pfeiffer ◽  
Sebastian Meyer ◽  
Oliver Amft ◽  
Daisuke Anzai ◽  
Jianqin Wang ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Body Movement ◽  
Soft Materials ◽  
Capacitive Coupling ◽  
Contact Impedance ◽  
Dynamic Variation ◽  
Incompressible Materials ◽  
Different Types ◽  
Negative Effect ◽  
Overall Performance

Differences in contact impedance of the ECG measurement electrodes lead to asymmetries of the signal paths and thus result in reduced common-mode rejection and artifacts. Here, the imbalance of contact impedance is investigated for<br>different types of electrodes with capacitive coupling in terms of static imbalance as well as dynamic variation during body movement. Flexible and incompressible materials like conductive foam and fabric showed the best overall performance. The negative effect of rigidity can partly be compensated by adding conducting foam, while soft materials can profit from an increase of electrode area. <br>

Polyester fabric with moisture management properties using a sol–gel technique for activewear

2021 ◽  
Vol 28 (8) ◽  
Author(s):  
Vikrant G. Gorade ◽  
Babita U. Chaudhary ◽  
Ravindra D. Kale
Keyword(s):  
Sol Gel ◽  
Polyester Fabric ◽  
Moisture Management ◽  
Gel Technique

Marketing's Role in the Implementation of Business Strategies: A Critical Review and Conceptual Framework

1987 ◽  
Vol 51 (3) ◽  
pp. 15-33 ◽  
Author(s):  
Orville C. Walker ◽  
Robert W. Ruekert
Keyword(s):  
Critical Review ◽  
Organizational Structures ◽  
Business Strategies ◽  
Theoretical Perspectives ◽  
Different Types ◽  
Marketing Activities ◽  
Overall Performance ◽  
Research Propositions ◽  
Relationship Of ◽  
The Relationship

The authors review and integrate various theoretical perspectives, normative statements, and pieces of empirical evidence about the organizational structures and processes best suited for implementing different types of business strategies. Particular emphasis is given to the relationship of different types of structure, processes, and policies involved in the performance of marketing activities to the overall performance of different business strategies. Several specific research propositions are developed.

The effects of timbre on absolute pitch judgment

2020 ◽  
pp. 030573561989343 ◽  
Author(s):  
Xiaonuo Li
Keyword(s):  
Undergraduate Students ◽  
Large Scale ◽  
Musical Training ◽  
Absolute Pitch ◽  
Tonal Music ◽  
Test Study ◽  
High Prevalence ◽  
Different Types ◽  
Overall Performance ◽  
Very High

This article reports the high prevalence of Absolute Pitch (AP) among students at Shanghai Conservatory of Music and explores the effects of timbre on AP judgment through a large-scale direct-test study. This study used two types of timbres (piano timbre and string timbre) to explore the correlation between the different types of timbre and note-naming accuracy. The participants included 71 undergraduate students majoring in piano and string at Shanghai Conservatory of Music, who had begun musical training at an age ⩽ 9 and focused on Western tonal music. The main results showed that the overall performance levels were very high and that the students scored 73% correct without semitone errors and 80% with semitone errors. All groups exhibited higher performance in judging pitches in piano timbre than string timbre. In addition, after listening to piano timbre, the accuracy in judging pitches in string timbre was significantly increased, and after listening to string timbre, the accuracy in judging pitches in piano timbre decreased but not significantly.

Moisture Absorption Finishing of Polyester Fabric

2013 ◽  
Vol 275-277 ◽  
pp. 2182-2185
Author(s):  
Jun Zhang
Keyword(s):  
Moisture Absorption ◽  
Process Condition ◽  
Polyester Fabric ◽  
Curing Temperature ◽  
Optimum Process ◽  
Curing Time ◽  
Drying Time ◽  
Moisture Management ◽  
Finishing Agent

Polyester fabric was finished by water-absorbent and quick-dry agent Casofter-252 and moisture management agent Hipom-790 for improving its moisture management property. The quality of moisture absorption finishing of the polyester fabric was detected in terms of wicking height and fast drying time. And the influence of agent concentration, pH, and curing temperature and time on moisture management property was studied in order to obtain the optimum process condition. The best choice for Casofter-252 was agent concentration 20g/L, pH 3, curing temperature 135 oC, curing time 120s, and the optimum finishing condition for Hipom-790 was as follows: agent concentration 30g/L, pH 5, curing at 115 oC for 140 s. The finished polyester fabric under the optimum condition showed much better air permeability. The tensile strength of the fabric increased after moisture finishing with Hipom-790 while it decreased for Casofter-252 used as a finishing agent.

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