http://nopr.niscpr.res.in/handle/123456789/33840 Tue, 08 Sep 2026 12:13:15 GMT 2026-09-08T12:13:15Z http://nopr.niscpr.res.in/handle/123456789/39054 Title: Analysis of structural properties of cotton/milkweed blended ring, compact and rotor yarns Authors: Karthik, T; Murugan, R Abstract: This study has been conducted to explore the relationship between yarn structure and yarn characteristics of cotton/milkweed (C/M) blended yarns. The fibre migration index values reveal that the milkweed fibres are predominantly in the yarn sheath of C/M 80/20 yarn, whereas it occupies the yarn core in C/M 60/40 and 40/60 combinations as small clusters. Fibre migration studies reveal that the compact spun yarns have higher fibre migration factor which is responsible for their tenacity followed by ring- and rotor-spun yarns. The effective packing density of C/M blended yarn decreases with the increase in milkweed blend proportion due to less cohesiveness and poor self locking structure of fibres in the yarn cross-section. Page(s): 361-366 Thu, 01 Dec 2016 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/39054 2016-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/39053 Title: Effect of core thread tension on structure and quality of multi-thread bouclé yarn Authors: Alshukur, Malek; Sun, Danmei Abstract: The effect of core thread tension on the structure and quality of multi-thread bouclé yarn has been studied experimentally. The core thread tension is controlled using the tension rollers and is set at five different values. The results show that the number of bouclé profiles increases to approximately 36 per metre, and relatively low variability of the size of bouclé profiles is secured. Hence, the fancy bulkiness of the bouclé yarns increases by approximately 92 mm²/m. Moreover, the circularity ratio of fancy profile increases to reach approximately 64% which is important for bouclé yarns. Further, by setting the core thread tension to approximately zero, only 50% extra supply of one effect thread is sufficient to manufacture the final multi-thread bouclé yarns. Therefore, it is possible to reduce the usage of materials and to improve the fancy yarn structure and quality. Page(s): 367-372 Thu, 01 Dec 2016 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/39053 2016-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/39052 Title: Properties of PS/TiO₂electrospunfibres using limonene as a solvent Authors: Khirandish, Maryam; Borhani, Sedigheh; Mallakpour, Shadpour; Youssefi, Mostafa Abstract: Limonene, a natural solvent, has been used for producing polystyrene (PS) nanocomposite (NC) fibres. Nanocompositefibres of PS are prepared by electrospinning of a homogeneous solution of titanium dioxide (TiO₂) nanoparticles (NPs) and PS. X-ray diffraction (XRD) pattern of PS nanocompositefibres confirms the presence of TiO₂ nanoparticles in the samples. FTIR spectra of PS nanocompositefibres obviously show that there is no chemical linkage or interaction between PS and TiO₂ nanoparticles in the resulting composites fibres. The morphology of PS electrospunfibres and PS/TiO₂ nanocompositefibres is investigated by SEM and FE-SEM. FE-SEM images of electrospunfibres reveal some aggregation of TiO₂ nanoparticles. The results also show that increasing TiO₂ nanoparticles reduces PS electrospunfibres diameter. Also, the UV protection of PS electrospunfibres is enhanced due to the increase in TiO₂ nanoparticles load. Tensile strength and elasticity modulus first show an increase up to 4 wt% of TiO₂ and then a decrease at higher loading. Differential scanning calorimeter (DSC) thermograms for PS electrospunfibres indicate that the introduction of TiO₂ nanoparticles decreases the glass transition temperature (<i>T</i>_g). Page(s): 373-379 Thu, 01 Dec 2016 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/39052 2016-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/39050 Title: Jute based all-cellulose composite laminates Authors: Adak, Bapan; Mukhopadhyay, Samrat Abstract: In this work, jute fabric reinforced all-cellulose composite laminates have been developed using a conventional hand lay-up method and compression moulding. Five layers of alkali-treated jute fabrics are impregnated with ionic liquid [1-butyl-3-methylimidazolium chloride (BmimCl)]. The impregnated layers are stacked symmetrically maintaining warp and weft directions of fabric, and then heated under pressure in a compression moulding machine for surface-selective dissolution in ionicliquid with the aim to prepare a compact single composite laminate. A matrix phase is formed in-situ by regeneration of dissolved fraction of fibre via solvent exchange. FTIR and X-ray diffraction (XRD) are used to investigate solid-state chemistry and to measure crystallinity of jute in fabric and composite forms. The surface morphology and cross-section of all-cellulose composite laminates is observed by optical microscopy and SEM. It is found that the binding of matrix and reinforcement, final morphology and mechanical properties of prepared ACCs are strongly dependant on pressure, temperature and dissolution time during the preparation of ACCs. Page(s): 380-384 Thu, 01 Dec 2016 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/39050 2016-12-01T00:00:00Z