The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Wei Zhang - One of the best experts on this subject based on the ideXlab platform.
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self assembly of single walled carbon nanotubes onto Cotton to make conductive Yarn
Particuology, 2012Co-Authors: C W Wu, Wei Zhang, Ravi S P SilvaAbstract:Abstract A simple, economical and scalable technique is demonstrated to make conductive Yarn. Single walled carbon nanotubes (SWCNTs) are non-covalently functionalized with dye (Acid Red 91) and dispersed in water; while Cotton Yarn is treated with poly (ethylene imine). When the resulting Yarn is immersed in the SWCNT dispersion, SWCNTs self-assemble onto the Yarn due to electrostatic forces between the functionalized nanotubes and Yarn. Scanning electron microscopy, transmission electron microscopy and Raman spectroscopy indicate the assembly of carbon nanotubes. The SWCNT functionalized Yarn exhibits reasonable electrical conduction behaviour and are then used to make chemiresistors. The electrical resistance of the chemiresistors used as sensors increases on exposure to ammonia gas, which can be explained in terms of electron transfer between gas molecules and SWCNTs.
Ravi S P Silva - One of the best experts on this subject based on the ideXlab platform.
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self assembly of single walled carbon nanotubes onto Cotton to make conductive Yarn
Particuology, 2012Co-Authors: C W Wu, Wei Zhang, Ravi S P SilvaAbstract:Abstract A simple, economical and scalable technique is demonstrated to make conductive Yarn. Single walled carbon nanotubes (SWCNTs) are non-covalently functionalized with dye (Acid Red 91) and dispersed in water; while Cotton Yarn is treated with poly (ethylene imine). When the resulting Yarn is immersed in the SWCNT dispersion, SWCNTs self-assemble onto the Yarn due to electrostatic forces between the functionalized nanotubes and Yarn. Scanning electron microscopy, transmission electron microscopy and Raman spectroscopy indicate the assembly of carbon nanotubes. The SWCNT functionalized Yarn exhibits reasonable electrical conduction behaviour and are then used to make chemiresistors. The electrical resistance of the chemiresistors used as sensors increases on exposure to ammonia gas, which can be explained in terms of electron transfer between gas molecules and SWCNTs.
S Nagan - One of the best experts on this subject based on the ideXlab platform.
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performance study of common effluent treatment plants of textile dyeing units in karur tamil nadu india
2010Co-Authors: S NaganAbstract:Cotton Yarn bleaching and dyeing is one of the major industrial activities in Karur Town, Tamil Nadu, India. The waste water let out from this industry is a major environmental concern. Out of 487 units, 391 units are member in common effluent treatment plant (CETP). 8 CETPs are in operation. The remaining 96 units have provided individual effluent treatment plant (IETP). After treatment the effluent is let into Amaravathi river a tributary of river Cauvery. The quality of effluent discharge from CETPs was monitored for a period one year. The report of analysis reveals that the total dissolved solids, chlorides, bio chemical oxygen demand, and chemical oxygen demand are exceeding the permissible inland surface water discharge standards. The discharge of partially treated effluent has adversely affected the river water quality as well as the groundwater quality. In order to protect the river and the groundwater, Tamil Nadu Pollution Control Board (TNPCB) have directed all the dyeing units to provide Reverse Osmosis (RO) plant with Reject Management System (RMS) and recycle the entire treated effluent so as to achieve Zero Liquid Discharge (ZLD).
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performance study of common effluent treatment plants of textile dyeing units in karur tamil nadu india
2010Co-Authors: S NaganAbstract:Cotton Yarn bleaching and dyeing is one of the major industrial activities in Karur Town, Tamil Nadu, India. The waste water let out from this industry is a major environmental concern. Out of 487 units, 391 units are member in common effluent treatment plant (CETP). 8 CETPs are in operation. The remaining 96 units have provided individual effluent treatment plant (IETP). After treatment the effluent is let into Amaravathi river a tributary of river Cauvery. The quality of effluent discharge from CETPs was monitored for a period one year. The report of analysis reveals that the total dissolved solids, chlorides, bio chemical oxygen demand, and chemical oxygen demand are exceeding the permissible inland surface water discharge standards. The discharge of partially treated effluent has adversely affected the river water quality as well as the groundwater quality. In order to protect the river and the groundwater, Tamil Nadu Pollution Control Board (TNPCB) have directed all the dyeing units to provide Reverse Osmosis (RO) plant with Reject Management System (RMS) and recycle the entire treated effluent so as to achieve Zero Liquid Discharge (ZLD).
Ennio Antonio Carnevale - One of the best experts on this subject based on the ideXlab platform.
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experimental investigation on industrial drying process of Cotton Yarn bobbins energy consumption and drying time
Energy Procedia, 2017Co-Authors: Giovanni Galoppi, Lorenzo Ferrari, Giovanni Ferrara, Ennio Antonio CarnevaleAbstract:Abstract In the textile industry, the drying process is a time consuming and energy expensive operation that influences strongly the cost of the textile finishing operations. For this reason, the study of innovative techniques plays a key role to decrease the energy consumption, the costs and the environmental impact. After a first mechanical process, the moisture is removed from Yarn fibers by a thermal convection dryer that delivers hot air through the material. In this study, the drying process of Cotton Yarn bobbins is experimentally analyzed. With this aim, an experimental test rig was developed based on the geometry of industrial dryers. The influence of the drying air path and the air working conditions was assessed by performing tests with different configurations, temperatures and pressures. The results were analyzed in terms of drying time and energy consumption as the optimum drying condition is a trade-off between these parameters.
M Meyyappan - One of the best experts on this subject based on the ideXlab platform.
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a carbon nanotube based ammonia sensor on Cotton textile
Applied Physics Letters, 2013Co-Authors: Jing Li, M MeyyappanAbstract:A single-wall carbon nanotube (CNT) based ammonia (NH3) sensor was implemented on a Cotton Yarn. Two types of sensors were fabricated: Au/sensing CNT/Au and conducting/sensing/conducting all CNT structures. Two perpendicular Au wires were designed to contact CNT-Cotton Yarn for metal-CNT sensor, whereas nanotubes were used for the electrode as well as sensing material for the all CNT sensor. The resistance shift of the CNT network upon NH3 was monitored in a chemiresistor approach. The CNT-Cotton Yarn sensors exhibited uniformity and repeatability. Furthermore, the sensors displayed good mechanical robustness against bending. The present approach can be utilized for low-cost smart textile applications.
