ICAR National Institute of Research on Jute and Allied Fibre Technology

Kolkata, India

ICAR National Institute of Research on Jute and Allied Fibre Technology

Kolkata, India

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Mishra L.,ICAR National Institute of Research on Jute and Allied Fibre Technology | Basu G.,ICAR National Institute of Research on Jute and Allied Fibre Technology | Samanta A.K.,University of Calcutta
Fibers and Polymers | Year: 2017

Coconut fibres were subjected to chemical treatment to obtain softer and finer fibres, suitable to blend with other finer fibre like jute. The chemical softening recipe was optimized using Box-Behnken design of experiments as 40 % Na2S, 10 % NaOH and 6 % Na2CO3, which notably reduced the fineness (33 %) and flexural rigidity (74 %) and improved tensile property of coconut fibre. Effect of softening of coconut fibre on its process performance was studied in high speed mechanized spinning system at different blend ratios with jute. Blending with jute assists in spinning of coconut fibre to produce yarn of 520 tex at production rate of 5-6 kg/h, as compared to 15 kg/day for hand spun 5300 tex raw coconut fibre yarn in manual system. Analysis of blended yarn structure in terms of packing density, radial distribution of fiber components (SEM) and mass irregularity were investigated. SEM shows yarns made from softened coconut fibre -jute blends are more compact than raw coconut fibre -jute blend yarns. Coconut fibres were preferentially migrated to core of the yarn. Major yarn properties viz., tensile strength, and flexural rigidity of raw and chemically softened blended yarns were compared against their finest possible 100 % coconut fibre yarn properties. Yarn made up to 50:50 chemically softened coconut fibre-jute blend showed much better spinning performance, and having superior property in terms of reduced diameter, higher compactness, strength, initial modulus and less flexural rigidity than 100 % raw, 100 % chemically softened coconut fibre rope, and raw coconut fibre-jute blend yarns. © 2017, The Korean Fiber Society and Springer Science+Business Media Dordrecht.


Lakshmanan A.,PSG College of Technology | Lakshmanan A.,ICAR National Institute of Research on Jute and Allied Fibre Technology | Lee J.S.,PSG College of Technology | Lee J.S.,Hyosung Corporation | And 4 more authors.
Indian Journal of Fibre and Textile Research | Year: 2015

Wool: cotton union fabric has been applied with chitosan biopolymer to impart shrink-proof finish and its performance is compared with two synthetic polymer finishes. Results show that chitosan forms thin film on the surface of wool fibre as in synthetic finishing polymer. The diffusion of chitosan biopolymer inside the wool fibre matrix is found to be better than synthetic polymer, which is confirmed by the cross-sectional view of finished wool fibre. It is concluded that chitosan biopolymer could be preferred over other synthetic polymer to prevent shrinkage of woollen textiles. © 2015, National Institute of Science Communication and Information Resources (NISCAIR). All right reserved.


Lakshmanan A.,ICAR National Institute of Research on Jute and Allied Fibre Technology | Debnath S.,ICAR National Institute of Research on Jute and Allied Fibre Technology | Sengupta S.,ICAR National Institute of Research on Jute and Allied Fibre Technology
Indian Journal of Fibre and Textile Research | Year: 2014

Jute: polyester blended yarn has been used to develop union fabric with cotton yarn, which satisfy the desirable properties for the development of a winter garment. Due to presence of jute fibre, it deficits in surface softness. An attempt has made to apply nano-polysiloxane based finishing both in individual as well as in combination with other finishing chemicals on this fabric by conventional pad-dry-cure method in order to improve its handle property. Properties such as bending length, crease recovery angle, and surface morphology have been evaluated as per standard methods. Results show that the nano+micro-polysiloxane based finishing combination shows better improvement in the surface morphology, handle and recovery property of the fabric than other finishing combinations. © 2014, Indian Journal of Fibre & Textile Research. All rights received.


Basu G.,ICAR National Institute of Research on Jute and Allied Fibre Technology | Mishra L.,ICAR National Institute of Research on Jute and Allied Fibre Technology | Jose S.,ICAR National Institute of Research on Jute and Allied Fibre Technology | Samanta A.K.,University of Calcutta
Industrial Crops and Products | Year: 2015

Accelerated chemical retting of raw coconut fibre was attempted. The treatment of raw coconut fibre with a combination of sodium sulphide, sodium hydroxide, sodium carbonate, reduce retting time from 6 to 12 months to 2 h. Chemical treatment decreases the linear density (about 36%), diameter (about 35%), and flexural rigidity (about 72%), ultimately resulting in much softer fibre. The treatment showed positive result towards mechanical proprieties. Fine structure analysis of the treated fibres through FTIR, XRD, TGA, SEM and component analysis validates the beneficial modification with improved properties. The chemical constituent, FTIR and TG analyses revealed enhancement of cellulose content and reduction in lignin, hemicelluloses etc. Resultant crystallinity index of the treated coconut fibre is enhanced by 36% compared to the raw fibres. SEM showed that chemical retting is most efficient in removal of impurities. The effluent obtained from chemical retting was suitably treated to make it safe for discharge. © 2015.


Satya P.,ICAR Central Research Institute for Jute and Allied Fibres | Karan M.,ICAR Central Research Institute for Jute and Allied Fibres | Jana S.,ICAR Central Research Institute for Jute and Allied Fibres | Mitra S.,ICAR Central Research Institute for Jute and Allied Fibres | And 3 more authors.
Meta Gene | Year: 2015

Twenty-four start codon targeted (SCoT) markers were used to assess genetic diversity and population structure of indigenous, introduced and domesticated ramie (Boehmeria nivea L. Gaudich.). A total of 155 genotypes from five populations were investigated for SCoT polymorphism, which produced 136 amplicons with 87.5% polymorphism. Polymorphism information content and resolving power of the SCoT markers were 0.69 and 3.22, respectively. The Indian ramie populations exhibited high SCoT polymorphism (>50%), high genetic differentiation (GST=0.27) and moderate gene flow (Nm=1.34). Analysis of molecular variance identified significant differences for genetic polymorphism among the populations explaining 13.1% of the total variation. The domesticated population exhibited higher genetic polymorphism and heterozygosity compared to natural populations. Cluster analysis supported population genetic analysis and suggested close association between introduced and domesticated genotypes. The present study shows effectiveness of employing SCoT markers in a cross pollinated heterozygous species like Boehmeria, and would be useful for further studies in population genetics, conservation genetics and cultivar improvement. © 2015 .


PubMed | ICAR National Institute of Research on Jute and Allied Fibre Technology and ICAR Central Research Institute for Jute and Allied Fibres
Type: | Journal: Meta gene | Year: 2015

Twenty-four start codon targeted (SCoT) markers were used to assess genetic diversity and population structure of indigenous, introduced and domesticated ramie (Boehmeria nivea L. Gaudich.). A total of 155 genotypes from five populations were investigated for SCoT polymorphism, which produced 136 amplicons with 87.5% polymorphism. Polymorphism information content and resolving power of the SCoT markers were 0.69 and 3.22, respectively. The Indian ramie populations exhibited high SCoT polymorphism (>50%), high genetic differentiation (GST=0.27) and moderate gene flow (Nm=1.34). Analysis of molecular variance identified significant differences for genetic polymorphism among the populations explaining 13.1% of the total variation. The domesticated population exhibited higher genetic polymorphism and heterozygosity compared to natural populations. Cluster analysis supported population genetic analysis and suggested close association between introduced and domesticated genotypes. The present study shows effectiveness of employing SCoT markers in a cross pollinated heterozygous species like Boehmeria, and would be useful for further studies in population genetics, conservation genetics and cultivar improvement.

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