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Messages - fatima

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Nutrition and Food Engineering / Re: Health Benefits of Honey
« on: May 11, 2015, 12:45:57 PM »
good post

Environmentally friendly (also eco-friendly, nature friendly, and green) are terms used to refer to goods and services, laws, guidelines and policies claimed to inflict minimal or no harm on the environment.
Eco-friendly jute product:
Jute, the Golden fiber as commonly known, is the second most important fiber after cotton because of its cheap pricing and eco-friendly attributes which is partially a textile fiber and partially a wood, it falls under the category of Ligno-cellulosic fiber.
High moisture absorption capacity, flexibility and drainage properties are the features characterizing jute as an eco-friendly fiber and so jute products are considered as ecologically acceptable by the environmentalists. Advantages enjoyed by jute products over other fibers are abundant availability and bio-degradable properties.
The trade the history of jute products can be traced back to the 17th century i.e. during the British rule. For centuries jute has been associated with flexible packaging, specially sacks, shopping bags and coarse door mats. In today’s date multiple and versatile jute products are creating a global market, saving after it lost to synthetic packaging during the 1970s.
The range of jute has increased in manifold and it spread from the packaging industry to the fashion industry. Designer sarees, salwar-kameezes, jewelries, jute apparels and foot wears are the new incarnations of the traditional jute products. Jute-blended carpets and rugs, decorative wall-hangings and tapestries, garden pot hangings, decorative hand bags, bed spreads, cushion covers, shopping bags, etc, .The range of jute products is ever increasing and under continuous improvisation.
The increasing popularity of the jute products is basically for its low cost and never compromises with quality and fashion which makes it easily accessible to the poor citizenry.
The gorgeously embroidered jute apparels can make nice replicas of silk and can give the other fiber industries a run for money.
Recently developed food grade jute bags and cloth called Hydrocarbon free jute bags conforming to international standard specifications. These bags and cloth have a large demand in export markets for packing cocoa beans, coffee beans, shelled nuts and other food products. Furniture is the latest forthcoming area in the domain of jute products.

Textile Engineering / Jute Geotextile :
« on: March 30, 2014, 07:02:29 PM »
Jute Geotextile :
Jute Geo textiles are indigenous, available technologies which have got enough potentiality for the improvement of rural roads. This technology has already been scrutinized by a model study implemented by Arcadia Property Development Ltd. (APDL) and Bangladesh Jute Research Institute (BJRI) in BJRI premises.
Rural unemployed, unskilled labour can be utilized for application of this technology. Normally Jute fibre is swelled and degraded within six months in water and less durable in acidic, alkaline and other solutions. Quick bio degradability and high hydrophobic character of Jute fibre is the main disadvantage for using Jute as raw material for Jute Geotextile. By different modifications, Jute materials are converted into design biodegradable and hydrophobic in nature without changing its environmental friendly properties.
Advantage of Jute Geotextile:
Jute Geotextile is much cheaper than synthetic fibre. It is easy to blend with other natural material and synthetic fibres. Jute Geotextile is environmental friendly, design biodegradable, hydrophobic, anionic and locally available materials. Initially it has got the high strength and non-hazardous properties. It is also a renewable source of energy as natural biomass.
The main objectives of the project are-
- Optimize Jute Geotextiles as stabilizer for rural roads.
- Technical feasibility study of Jute Geotextile use in large scale.
- Marketing of Jute Geotextile.
- Employment Generation.
- Transfer of Technology.

Textile Engineering / Natural dyes
« on: March 30, 2014, 06:47:58 PM »
Natural Dyes:
The word ‘natural dye’ covers all the dyes derived from the natural sources like plants, animal and minerals.
Natural dyes are mostly non-substantive and must be applied on textiles by the help of mordants, usually a metallic salt, having an affinity for both the colouring matter and the fibre.
Natural dyes produce very uncommon, soothing and soft shades as compared to synthetic dyes.
Origins of Natural Dyes:
1. Plants & Vegetables
2. Animals & Insects
3. Minerals
4. Fungi ,Lichen & Mushrooms

Textile Engineering / Functional Dyes
« on: March 30, 2014, 06:45:36 PM »
Functional Dyes:
Dyes, and related ultraviolet (UV) and particularly infrared (IR) active molecules, which have been specifically designed for these hi-tech applications, are generally called functional dyes.
Functional dyes are designed to interact with electromagnetic radiation, pH, electricity, heat, pressure and even frictional forces

« on: March 30, 2014, 06:43:01 PM »
This ultimate finishing technology gives durable cellulose wrapping over synthetic fiber. Cellulosic sheath and synthetic core together form a concentric structure to bring overall solutions to the disadvantages of synthetics being hydrophobic, electrostatic, having artificial hand and glaring luster. It will broaden the existing use of synthetics, being free of their disadvantages as found in synthetic suits being hydrophobic, electrostatic and having unnatural hand.
The following are examples of new areas of use created through Nano- Touch, a new standard for fiber compounding. Self-assembled nanolayer (SAN) coating is a challenge to traditional textile coating. Research in this area is still in embryo stage.
In self- assembled nanolayer (SAN) coating, target chemical molecules form a layer of thickness less than nanometer on the surface of textile materials. Additional layers can be added on the top of the existing ones creating a nanolayered structure. Different SAN approaches are being explored to confer special functions to textile materials.
• Superior Refinement in a Blended Fabric
• Durable Performance
• Luxurious Cotton-Like Hand
• Easy Care
• Reduced Static Build-up

« on: March 30, 2014, 06:42:05 PM »
It is a hydrophilic finishing technology that imparts outstanding endurance of more than 50 home launderings and offers prospects of considerable contribution to the area of polyester and nylon synthetic garments.
Nano-Dry exerts durability superior to that of the hydrophilic finishing of polyester commonly carried out in Japan using polyethylene glycol polymer molecules, and allows no dye migration when deep-dyed.
It is expected to serve particularly well for use in nylon, as there exists no such durable hydrophilic finishing, in the field of sportswear and underwear that require perspiration absorbency. Considerable growth is expected within the forthcoming period of 3 to 6 months, mainly in the field of sportswear.
• Moisture Wicking
• Retains Breathability of Fabric
• Quick Drying
• Preserves Original Hand
 • Durable Performance

« on: March 30, 2014, 06:41:13 PM »
This nanotech application of water-and-oil repellent finishing is effective for use in natural fibers such as cotton, linen, wool and silk, as well as synthetics such as polyester, nylon and acryl. Unsurpassed performance in durability and water and oil repellency may be expected particularly with natural fibers. Nano-Pel cotton withstands 50 home launderings, with functionality levels well-maintained for water and oil repellency (80 and 4) even after 20 washes (Figure shows Before & After).

•Superior Water and Oil Repellency
•Minimize Stains
•Breathable Fabric
•Preserves Original Hand
•Easy Care
•Durable Performance

« on: March 30, 2014, 06:39:58 PM »
A technology that brings about an entirely carefree fabric with wrinkle resistant, shrink proof, water and stain repellent properties, intended for use in cellulosic fibers such as cotton and linen.
It is a next-generation, ease-of-care, dimension-stabilizing finish, one step ahead of methods that simply give wrinkle resistance and shrink-proofing. Nano-Care withstands more than 50 home launderings.
It imparts water repellency and stain resistance superior to those of conventional methods, maintaining high water and oil repellency levels (80 and 4) even after 20 home washes.

• Superior Stain, Water and Oil Repellency
• Resists Wrinkles
• Breathable Fabric
• Preserves Original Hand
• Easy Care

Textile Engineering / Thermoresponsive polymers
« on: March 30, 2014, 06:33:16 PM »
Thermoresponsive polymers:
Temperature-responsive polymers or thermoresponsive polymers are polymers that exhibit a drastic and discontinuous change of their physical properties with temperature. The term is commonly used when the property concerned is solubility in a given solvent, but it may also be used when other properties are affected. Thermoresponsive polymers belong to the class of stimuli-responsive materials, in contrast to temperature-sensitive (for short, thermosensitive) materials, which change their properties continuously with environmental conditions.
Research mainly focuses on polymers that show thermoresponsivity in aqueous solution. Promising areas of application are tissue engineering, liquid chromatography, drug delivery and bioseparation. Only a few commercial applications exist, for example, cell culture plates coated with an LCST(lower critical solution temperature)-polymer.
Applications of Thermoresponsive polymers:
1. Drug Delivery
2.  Gene Delivery
3. Bioseparation
4. Tissue engineering
5.  Chromatography
6. Thermoresponsive gels

Textile Engineering / Infrared polymer cells
« on: March 30, 2014, 06:28:41 PM »
Infrared polymer cells:
Infrared cells preferentially absorb light in the infrared range rather than the visible wavelength range. As of 2012, such cells can be made nearly 70% transparent to the latter. The cells employ silver nanowire/titanium dioxide composite films as the top transparent electrode, replacing conventional opaque metal electrodes. With this combination, 4% power-conversion efficiency has been achieved.

Textile Engineering / Polymer solar cell
« on: March 30, 2014, 06:27:49 PM »
Polymer solar cell:
A polymer solar cell is a type of flexible solar cell made with polymers, large molecules with repeating structural units, that produce electricity from sunlight by the photovoltaic effect. Polymer solar cells include organic solar cells (also called "plastic solar cells"). Polymer solar cell technology is relatively new and is being actively researched by universities, national laboratories, and companies around the world.    

Textile Engineering / Electroluminescence
« on: March 30, 2014, 06:27:17 PM »
Electroluminescence is light emission stimulated by electrical current. In organic compounds, electroluminescence has been known since the early 1950s, when Bernanose and coworkers first produced electroluminescence in crystalline thin films of acridine orange and quinacrine. The increased conductivity of modern conductive polymers means enough power can be put through the device at low voltages to generate practical amounts of light. This property has led to the development of flat panel displays using organic LEDs, solar panels, and optical amplifiers.

Textile Engineering / Conductive polymer
« on: March 30, 2014, 06:24:56 PM »
Conductive polymer:
Conductive polymers or, more precisely, intrinsically conducting polymers (ICPs) are organic polymers thatconduct electricity. Such compounds may have metallic conductivity or can be semiconductors. The biggest advantage of conductive polymers is their processability, mainly by dispersion. Conductive polymers are generally notthermoplastics, i.e., they are not thermoformable. But, like insulating polymers, they are organic materials. They can offer high electrical conductivity but do not show similar mechanical properties to other commercially available polymers.
Due to their poor processability, conductive polymers have few large-scale applications. They have promise in antistatic materials and they have been incorporated into commercial displays and batteries.They are also promising in organic solar cells, printing electronic circuits, organic light-emitting diodes, actuators, electrochromism, supercapacitors, chemical sensors and biosensors, flexible transparent displays, electromagnetic shielding and possibly replacement for the popular transparent conductor indium tin oxide. Another use is for microwave-absorbent coatings, particularly radar-absorptive coatings on stealth aircraft.

Textile Engineering / Fire-safe polymers
« on: March 30, 2014, 06:23:40 PM »
Fire-safe  Polymer:
Fire-safe polymers are polymers that are resistant to degradation at high temperatures. There is need for fire-resistant polymers in the construction of small, enclosed spaces such as skyscrapers, boats, and airplane cabins. In these tight spaces, ability to escape in the event of a fire is compromised, increasing fire risk. Some studies report that about 20% of victims of airplane crashes are killed not by the crash itself but by ensuing fires. Fire-safe polymers also find application as adhesives in aerospace materials, insulation for electronics, and in military materials such as canvas tenting.

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