http://nopr.niscpr.res.in/handle/123456789/66151 Fri, 09 Oct 2026 19:51:46 GMT 2026-10-09T19:51:46Z http://nopr.niscpr.res.in/handle/123456789/66189 Title: Development and characterisation of biodegradable chitosan Authors: Ganesan, P; Karthik, T; Hema, J Abstract: This study aims to develop a novel herbal curative film for wound dressing by holding a combination of herbs (Eugenia jambolana, Aerva lanata), and chitosan, acting as a drug-releasing agent on the wound surface. The films are formed using a simple film-casting technique with citric acid as the solvent and glycerol as a plasticiser. Surface morphology is carried out using scanning electron microscopy, and the chemical composition is confirmed through Energy Dispersive X-ray Analysis (EDAX). The physical properties of the film are assessed using standard methods. Bioevaluation characteristics like antimicrobial efficacy are measured in terms of zone of inhibition against Bacillus subtilis and Pseudomonas aeruginosa. Additionally, microbial penetration, drug release activity, cytotoxicity, and contact dermatitis are analysed as per standard protocols. The results demonstrate that the developed films exhibit promising performance and potential in biodegradable wound dressing applications with desirable wound healing properties Page(s): 115-122 Sun, 01 Jun 2025 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/66189 2025-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/66188 Title: Improving the dyeability of polyester fibre with basic dye using corona discharge accompanied by nanoclay treatment Authors: Fotouhi, M; Shams Nateri, A; Mokhtari, J Abstract: This study presents a novel method for dyeing polyester fabric with basic dyes using corona discharge accompanied by nanoclay treatment. Thus, the fabric is treated with corona discharge irradiation at 5 kV and 10 kV for 10 min, followed by treatment with nanoclay at different concentrations. The basic dye absorption behaviour of treated fabric is studied by evaluated using reflectance spectra, colour parameters, and washing and rubbing fastness tests. Response surface methodology analyses indicates that the colour strength of the dyed sample increased while Lightness (L*) decreased with increasing voltage, time and amount of nanoclay. The results suggest that the combined treatment significantly improves the dyeability of polyester fabrics with basic dyes without the need for harsh chemical processes. This method offers alternative for polyester dyeing on commercial scale with less pollution. Page(s): 123-130 Sun, 01 Jun 2025 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/66188 2025-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/66187 Title: Exploring the potential of cellulosic fibre in activewear for sustainable fashion Authors: Halder, Ritwick; Chakrabarti, Abir; Bhaumik, Somes; Roy Maulik, Sankar Abstract: This study aims to evaluate the performance of regenerated cellulosic knitted fabrics in activewear applications, focusing on moisture management and thermal comfort. While sportswear and athleisure materials continue to evolve towards enhanced user comfort, polyester remains the dominant fibre in the activewear market due to its effective moisture transport capabilities. In contrast, this study develops and investigates single jersey fabrics made of 100 % dope-dyed viscose treated with a hydrophobic agent and viscose/excel blended yarns, comparing their performance with commercially available activewear. The results reveal considerable differences, highlighting the influence of fabric structure on wicking behaviour and heat flux values. Fabrics with greater air entrapment exhibit lower Qmax values, indicating reduced instantaneous cooling. The configuration of viscose/excel on the fabric face and hydrophobic finished viscose at the back demonstrates effective directional moisture transfer from the inner to the outer surface. The 100% regenerated cellulosic fabrics with a hydrophobic finish show significant differences in spreading speed between the face and back, enhancing moisture evaporation. The wicking behaviour and heat flux values are also influenced by the knitting structures, with regenerated cellulosic fabric with a hydrophobic finish showing higher Qmax values. The infra-red spectroscopic study helps to identify the hydrophobic component applied to viscose fibres. The findings support the potential of sustainable regenerated fibres as viable alternatives in moisture-regulating sportswear and performance textiles. Page(s): 131-136 Sun, 01 Jun 2025 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/66187 2025-06-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/66186 Title: Effect of flame retardant additive concentration on the flame spread behaviours of polypropylene knitted fabrics Authors: Özkan Hacıoğulları, Selcen; Babaarslan, Osman Abstract: Polypropylene (PP) is widely used in technical textiles, such as protective/safety and home textiles. However, its inherent flammability limits its performance in such contexts. This study investigates the flammability characteristics of PP raw material mixed with organophosphonate-based flame retardant additive. The FR additive was incorporated into the PP matrix at concentrations ranging from 1 % to 8 % using a laboratory-scale melt-spinning process. Pure and FR-treated PP fabrics’ burning and flame spread behaviours were investigated in detail. Flame spread behaviours were further supported by digital photographs and AutoCAD drawings. Results show that the pure PP fabric exhibits double-burning peaks and burns for a long time. Burning lengths and burning time were significantly reduced by adding FR additives. Fabrics with FR treatment predominantly display single-peak and middle-ignition behaviour, indicating improved fire resistance. These findings highlight the effectiveness of organophosphonate-based additives in enhancing the flame retardancy of PP textiles, supporting their safer use in technical applications. Page(s): 137-143 Sun, 01 Jun 2025 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/66186 2025-06-01T00:00:00Z