ANTIMICROBIAL POLYESTER FIBER

Kuraray has developed an antimicrobial polyester fiber that is based on a white ceramic. The ceramic, developed by Shinagawa Fuel Company, is permanently incorporated in the polymer and does not affect the color of the fiber. The fiber can be laundered repeatedly, blended with other fibers, and dyed and finished without loosing its antimi..

SUPERABSORBENT FIBER.

Courtaulds will begin production of its new FSA superabsorbent fiber. Initial production will be 1,000 tons a annually. A full-size commercial production plant is expected in the future. The fiber has been reported as having many advantages over currently used powders. The fiber can be evenly distributed to make absorbent nonwoven fabrics..

BICOMPONENT POLYESTER FIBERS.

Hoechst Celanese has introduced Celbond, a family of core/sheath type bicomponent polyester fibers for use in lightweight structures for medical applications; filling materials for cushions, bedding, and furniture; consolidated needlepunched products; and other nonwovens applications. The Celbond family consists of nine different fibers, ..

ARAMID FIBER FROM HOECHST.

A novel method is used at Hoechst's Kelheim plant to produce aramid fibers. The Hoechst process uses n-methyl pyrolidone as a sovlent. The polymers are held in solution through to final extrusion, after which they are drawn at over 400 degrees Celsius. The Hoechst process eliminates the need for the two solvent recovery systems required f..

ACRYLIC FIBERS.

Acrylic fiber is among the most important of the manmade fibers, despite relatively few industrial uses and production that is almost entirely confined to staple fiber. Du Pont introduced the first acrylic yarn, tradenamed Orlon, in 1948. Problems with dyeing limited its marketability in the beginning. The addition of dyeable monomers to ..

SOME COMPLEXITIES IN THE RELATION BETWEEN FIBER PROPERTIES AND YARN QUALITY

A great deal of research has been conducted to determine the relationship between fiber properties and such yarn properties as strength, irregularity, and defects. Fiber length, fineness, and bundle strength are the most powerful influences on yarn strength and the spinnability of cotton. Fiber finences, fiber length, and short fiber cont..

BIODEGRADABLE MANMADE FIBERS.

Some new biodegradable fibers based on natural and synthetic polymers were studied. Copolyesterether (CPEE) fibers were obtained by the modification of polyethylene terephthalate with polyethylene glycol. Alginate fibers were manufactured from an aqueous chitosan organic acid solution. The mechanical properties of both alginate and CPEE f..

UPGRADING OF LOW-GRADE JUTE AND CUTTINGS. PART 1. MICROBIAL ACTIVITY AND ITS ENHANCEMENT BY USING CHEMICALS.

Low-grade jute and jute cuttings are not spinnable unless they are treated. Several chemicals were tested for their ability to improve microbiological treatments. Ammonium salts (diammonium phosphate and ammonium oxalate) and urea performed best and increased microbial activity under conventional mill conditions. No significant loss of we..

UPGRADING OF LOW-GRADE JUTE AND CUTTINGS. PART 2. INTERACTION BETWEEN JUTE FIBERS AND MICROBIAL ENZYMES.

Enzymes that can be used to soften and defibrillate low-grade jute and jute cuttings were examined. Both commercial enzymes (Novo's Flaxzyme and Pe ctinex and Bicon's Bioxylanase) and enzymes extracted from the fungl Aspergillus niger and Aspergillus terreus were tested. The extracts from both Aspergillus species showed similar activity, ..

UPGRADING OF LOW-GRADE JUTE AND CUTTINGS. PART 3. LARGE-SCALE APPLICATION AND THE PROCESSING OF JUTE FIBERS BY MEANS OF ENZYMES

An Industrial-scale method using enzymes from Aspergillus terreus to improve low-grade jute and jute cuttings was developed. The first stage of the method involves solid-state fermentation and the extraction and assay of the enzymes. The enzymes include carboxymethyl cellulase, xylanase, and polygalactuonase. The enzymes are mixed in an e..