http://nopr.niscpr.res.in/handle/123456789/63645 Fri, 09 Oct 2026 03:16:40 GMT 2026-10-09T03:16:40Z http://nopr.niscpr.res.in/handle/123456789/65285 Title: Thermal comfort properties of natural and manmade cellulosic fabrics Authors: Suganthi, S; Pachiayappan, K M; Krithika, S M Udaya; Prakash, C Abstract: A crucial and expected characteristic of a fabric chosen for garment purposes is its capacity to transport and evaporate moisture efficiently. The current study evaluates the thermal comfort characteristics of four distinct natural and synthetic cellulosic fibres, their blends, and modifications made to three different knitted structures. The results demonstrate that modal fibre distributes and wicks swiftly, taking 50% less time on average than other fibre samples. Single jersey fabrics excelled the other two structures in exhibiting thermal characteristics. For applications like sportswear, where enhanced thermal comfort with improved quality are required, single jersey modal fabric is evaluated as a superior thermal comfort fabric. Page(s): 403-407 Sun, 01 Dec 2024 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/65285 2024-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/65284 Title: Impact of fire retardant finish on the mechanical and comfort properties of cotton fabric Authors: Pal, Ayan; Samanta, Ashis Kumar; Kar, Tapas Ranjan Abstract: The present study evaluates the hand value of cotton fabric treated with a newly developed fire-retardant (FR) finish with Ammonium Sulfamate and Sodium Stannate with the help of the Kawabata Evaluation System (KES). The analysis reveals that the FR treatment reduces fabric tensile energy (39%) and bending rigidity (13%) while increasing shear stress at 50 angle (34%) and coefficient of friction (438%). These changes indicate that the FR treatment makes the fabric stiffer, less capable of withstanding external stress, and rougher in texture, resulting in less comfort to the wearer. Consequently, the FR-treated fabric demonstrates less potential for the tailoring and garment industry. Page(s): 408-415 Sun, 01 Dec 2024 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/65284 2024-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/65283 Title: Impact of moisture content and thermal exposure on the thermal protective performance of multilayered thermal liner Authors: Das, Tathagata; Das, Apurba; Alagirusamy, R Abstract: This study evaluates the heat transfer index (HTI24) of a multi-layer thermal liner subjected to varying degrees of heat flux under radiant, flame, and 50 % radiant – 50 % flame exposure using a vertical thermal protective performance tester. A three-layer needle-punched nonwoven thermal liner with moisture levels of 0 %, 25 %, 50 %, 75 %, and 100 % is tested across heat flux levels (20, 30 and 40 kW/m2). Regression analysis identifies the relationship among the heat transfer index, moisture percentage in the thermal liner, and heat flux under different exposure types, with regression equations developed to calculate the HTI24 values. Moisture positively influences HTI24 during different flame exposures. However, at lower levels of radiative heat flux, water percentage increases the HTI24 value, while at higher levels, water percentage has an adverse impact on the HTI24 value. These findings highlight the complex interplay of moisture percentage and thermal conditions in optimizing thermal protective performance. Page(s): 416-422 Fri, 01 Nov 2024 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/65283 2024-11-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/65282 Title: Dyeing efficiency of Lawsonia inermis (Henna) and ferrous sulphate on silk fibre Authors: Bhat, Aina; Sahaf, KA; Sofi, A H; Buhroo, Z I; Jalal, Heena; Mir, S A; Parray, M A; Baqual, M F Abstract: This study evaluates the dyeing efficiency of Lawsonia inermis (Henna) at varying concentrations on silk fibres using 3% ferrous sulfate as a mordant. Preliminary trials suggest 3% of ferrous sulphate as the optimal mordant concentration, while henna dye percentages of 10%, 15% and 20% are assessed. The dyed samples are analyzed for absorbance, colour coordinates, colour strength and fastness properties. Results indicate that 15% henna dye, along with 3% ferrous sulphate, achieves better dyeing performance on silk fibres. Page(s): 423-425 Sun, 01 Dec 2024 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/65282 2024-12-01T00:00:00Z