NOPR Collection:http://nopr.niscpr.res.in/handle/123456789/656382026-10-10T07:31:42Z2026-10-10T07:31:42ZWeave design and formability of 3D textile preforms for composite applicationsDash, Ashwini KumarBehera, Sameer KumarBehera, Bijoya Kumarhttp://nopr.niscpr.res.in/handle/123456789/656872025-04-03T11:42:28Z2025-03-01T00:00:00ZTitle: Weave design and formability of 3D textile preforms for composite applications
Authors: Dash, Ashwini Kumar; Behera, Sameer Kumar; Behera, Bijoya Kumar
Abstract: Formability is a critical parameter in composite applications, determining a fabric's ability to attain a desired shape. This
study evaluates the formability of 3D woven solid structures by analysing their forming energy. Orthogonal and interlock
fabrics with six different weave designs are examined, revealing that bending rigidity serves as a reliable indicator of
formability, as previously established for 2D graphite fibre preforms. A strong correlation is observed between forming
energy and bending rigidity, with fabric crossover points playing a significant role in influencing both parameters. Notably,
the correlation between crossover points and bending rigidity is found to be stronger than that with forming energy.
Page(s): 7-142025-03-01T00:00:00ZDevelopment of durable copper-coated ultralight weight nonwoven fabric: Focus on EMI shieldingPeriyasamy, Aravin PrinceMilitky, Jirihttp://nopr.niscpr.res.in/handle/123456789/656862025-04-03T11:40:40Z2025-03-01T00:00:00ZTitle: Development of durable copper-coated ultralight weight nonwoven fabric: Focus on EMI shielding
Authors: Periyasamy, Aravin Prince; Militky, Jiri
Abstract: This study aims to develop the sol gel technique to enhance the durability of copper coatings on polyester nonwoven
(NW) fabric while achieving effective electromagnetic interference (EMI) shielding. FTIR and XRD analyses confirm the
successful silanisation of NW fabrics, while SEM imaging reveals uniform silane deposition on the copper-coated NW
fabrics. The presence of silane directly impacts EMI shielding capabilities, making these treated NW fabrics highly
promising for advanced applications. Durability assessments demonstrate that sol-gel coatings improve mechanical and
environmental stability. Washing durability tests show that untreated fabrics lose up to 65% of EMI SE, whereas sol-geltreated
fabrics retain their shielding properties. In conclusion, silane coating on conductive NW fabrics exhibits enhanced
durability, effectively maintaining copper adhesion and EMI shielding under mechanical stress, washing, and chemical
exposure.
Page(s): 15-252025-03-01T00:00:00ZGelatin/CaCl2 based cellulose nonwoven for haemostat applicationsThillaipandian, HemamaliniRavindran, AbhinayaArivazhagan, MinminiDayalan, KaranGiridev, V Rhttp://nopr.niscpr.res.in/handle/123456789/656852025-04-03T11:38:52Z2025-03-01T00:00:00ZTitle: Gelatin/CaCl2 based cellulose nonwoven for haemostat applications
Authors: Thillaipandian, Hemamalini; Ravindran, Abhinaya; Arivazhagan, Minmini; Dayalan, Karan; Giridev, V R
Abstract: This study investigates the controlled delivery of wound healing and clotting agents in wound dressings to enhance
haemostatic efficiency. Conventional methods such as exhaustion and padding result in excessive consumption of these agents,
leading to inefficiencies. To address this, electrospraying of polymer is carried out on the wound contact site. A wet-laid
hemostat is developed, followed by the electrospraying of gelatin and calcium ions to improve haemostatic performance. The
prepared hemostats exhibit enhanced blood clotting efficiency and phosphate buffer solution (PBS) uptake, demonstrating their
potential for advanced wound dressing applications.
Page(s): 26-302025-03-01T00:00:00ZPerformance evaluation of woven fabrics made from recycled PET and recycled cotton fibresYüksel, Yaşar EraymanKorkmaz, YaseminKaynak, Hatice Kübrahttp://nopr.niscpr.res.in/handle/123456789/656842025-04-03T11:35:51Z2025-03-01T00:00:00ZTitle: Performance evaluation of woven fabrics made from recycled PET and recycled cotton fibres
Authors: Yüksel, Yaşar Erayman; Korkmaz, Yasemin; Kaynak, Hatice Kübra
Abstract: This study investigates the performance properties of woven fabrics produced using rotor yarns in both weft and warp directions, which contain recycled polyethylene terephthalate (r-PET) fibres from PET bottles and recycled cotton fibres
(r-CO) from cotton clothing wastes in different blend ratios. Additionally, fabrics are produced using weft and warp yarns composed of virgin fibres, including 100% virgin cotton (CO), 100% virgin polyester (PET), and a 50/50% CO/r-CO blend, to enable performance comparisons. Samples containing recycled fibres exhibit higher yarn unevenness, thick places and neps values, along with lower breaking strength, tear strength, relative water vapour permeability, air permeability compared to their virgin counterparts. Among samples composed entirely of 100% recycled fibres, an increasing r-CO fibre ratio corresponds to greater unevenness, thick places and neps values, while air permeability and thermal resistance decrease. However, noconsistent trend emerges in breaking strength, elongation, tear strength, abrasion resistance, or relative water vapour permeability, depending on fibre blend ratios.
Page(s): 31-402025-03-01T00:00:00Z