Low Stress Mechanical Properties & Total Hand Values of Silk Acrylic Knitted Fabrics

Periodic Research (P: ISSN No. 2231-0045 RNI No. UPBIL/2012/55438 VOL. -6, ISSUE-2, November - 2017 E: ISSN No. 2349-9435)


Abstract



 Rajiv Kumar

Associate Professor, Deptt.of Textile Technology, M.L.V. Textile & Engineering College, Bhilwara, Rajasthan

Fabric hand has become indispensable property of fabric. It indicates that whether customer will prefer to purchase the fabric or not. This paper reports comparison of low stress mechanical properties (tensile, bending, shear, surface and compression properties) and Total hand Value of 100% silk, 100% acrylic, silk/ acrylic 50/50 blended knitted fabric to very common cotton knitted fabric of similar construction. It was found that comparatively lower values of elongation are observed for 100% acrylic and acrylic-silk 50/50 blend (A5S5) in comparison to 100% silk and cotton fabric. This is due to higher value of yarn diameter resulting in more area of contact within the threads and more resistance during tensile elongation resulting in lower value of EM in case of acrylic and A5S5 fabric. Slightly higher values of linearity of load-extension curve (LT) are observed in case of acrylic and A5S5 fabric. This is also due to more resistance offered by these yarns due to greater diameter. Mean bending stiffness (B) of acrylic fabric is maximum followed by A5S5, silk and cotton fabric. This is due to the fact that thickness of acrylic and A5S5 fabric is greater than silk and cotton fabric. Shear stiffness (G) is maximum for A5S5 fabric followed by acrylic, silk and cotton. Lower values of coefficient of friction (MIU) are observed for silk and acrylic-silk 50/50 blend. It indicates smoother surface of these fabrics. Linearity of compression (LC) for acrylic and A5S5 fabric is higher than silk and cotton fabric. This is due to higher resistance offered during shear deformation due to bulky nature of these fabrics. Koshi value (bending stiffness) is maximum in case of A5S5 fabric. Higher value of Numeri (smoothness) is observed for silk fabric in comparison to other fabrics. It indicates smoother nature of silk knitted fabrics. Fukurami values of acrylic, A5S5 acrylic/silk 50/50 and silk knitted fabrics are better than cotton fabric. Total hand value of the acrylic, A5S5 acrylic/silk 50/50 and silk knitted fabrics is better than cotton fabric. These results indicate that acrylic, A5S5 acrylic/silk 50/50 and silk knitted fabrics are better than cotton fabric and customers may prefer to purchase acrylic, A5S5 acrylic/silk 50/50 and silk knitted fabrics.

for full paper please visit below link :

http://www.socialresearchfoundation.com/upoadreserchpapers/2/187/1801121116301st%20rajiv%20kumar.pdf

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