On-line surface modification of polypropylene fibers by corona treatment during melt-spinning

On-line corona treatment of polypropylene (PP) fibers during melt-spinning is studied. After extrusion of PP filaments, collected fiber tow is subjected to corona treatment prior to drawing, crimping, and cutting into staple fibers, and wettability, antistatic, and friction properties of treated fibers are characterized. Corona treatment ..

Effect of cellulase adsorption on the surface and interfacial properties of cellulose

The surface properties of several purified cellulose (Sigmacell 101, Sigmacell 20, Avicel pH 101, and Whatman CF 11) were characterised, before and after cellulase adsorption. The following techniques were used: thin-layer wicking (except for the cellulose Whatman), thermogravimetry, and differential scanning calorimetry (for all of the a..

Potentiometric study of intermolecular interactions in cationic-nonionic mixed surfactant systems

The nature and thermodynamics of interactions of the cationic surfactant dodecyltrimethylammonium bromide (DTA)with the nonionic surfactant Triton X-100(TX100) in mixtures are studied using the potentionmetric method. We investigate the influence of temperature, the addition of KBr, and the concentrations of DTA and TX100 on the complex f..

The use of variable test specimen mass when measuring mean fibre diameter by airflow

The development of a technique is outlined for the measurement of mean fibre diameter(MFD) by Airflow using a test specimen which can vary in mass from 2.4000g to 2.600g. The new technique requires additional calibration steps resulting in an individual calibration equation for each value of specimen mass. Trials show equal performance be..

Effect of wear on interface frictional resistance in fiber-reinforced composite: Model experimental

The effect of abrasive wear at frictional sliding interface on shear frictional resistance in fiber-reinforced composite has been studied using W fiber-reinforced epoxy model composite. The interface shear frictional resistance decrease with the increase of fiber-matrix relative interface sliding during pushout test. Observation of the ma..

Future fibre trends

Some of the trends discussed at the recent Textile Institute Conference in Manchester, UK, are highlighted. Dyeing cationic cotton with direct and fibre reactive dyes leads to outstanding wet fastness properties without reducing light fastness performance. Polyester meanwhile is likely to remain super-competitive on price, particularly wi..

Research and innovation. II. Genetic engineering, anti-bacterial fibres, luminescence, UV protection, camouflage (Italian) (Ricerca e innovazione. II Parte. Ingegneria genetica, fibre antibatteriche, luminescenza, protezione UV, mimetizzazione)

The article presents several short items about recent advances in textile science. The items deal with the genetic modification of linen, biomedical and biotechnological applications of silk, the application of biotechnology to produce 'fine' wool, UV protective t-shirts for children made from Enka Sun fibre by Akzo Nobel, luminescent fab..

The kinetics of α and β transcrystallization in fibre-reinforced polypropylene

The kinetics of α(monoclinic) and β(hexagonal) transcrystallization of isotactic polypropylene on aramid Kevlar 149 fibres, glass fibres and high modulus carbon fibres was investigated under isothermal and gradient cooling conditions. No difference was found between growth rates of bulk spherulties and transcrystalline layers, and Hoffman..

Medical textiles at Heriot Wat University - Centre for biomaterials

In 1998 the Scottish College of Textiles was awarded ￡540 000 from the Scottish Higher Education Funding Council to set up a centre for research into biomaterials. This was delayed because of the College's merger with Heriot Watt. it is now however well on its way to becoming finished and will hopefully open late in 2000. This article de..

Process for sorbing liquids using tropical fibers

A process is described for using tropical fibers to recover spilled oil, gasoline, kerosene, hydrocarbons, pentachlorophenol, creosote or other hazardous liquids from land or water. The sorbent fiber material is produced from agricultural byproducts from cultivation of banana, plantain, cavendish plant, pineapple, coconut, palm, or other ..