Fauland G.,University of Innsbruck |
Constantin F.,University of Innsbruck |
Gaffar H.,V Trion GmbH |
Bechtold T.,University of Innsbruck
Journal of Applied Polymer Science | Year: 2015
Through its hydrophobic properties, polypropylene (PP) offers unique potential as a functional fiber for a wide range of applications, for example, in nonwovens for hygiene applications or as a baselayer in sports textiles. Current work is focused on the modification of PP presently used in baselayers for sports textiles to increase the hydrophilicity by use of a production scale plant for low pressure plasma treatment. Attention was directed toward an increase in hydrophilicity and time stability of the achieved modification during storage. Changes in the fabric were characterized by sorption of the cationic dye (methylene blue), water retention value, water transport properties, Fourier transform infrared spectroscopy and color measurement. The obtained results indicate an improved wettability and wicking. The extent of modification decreased with storage time and parallel yellowing of treated samples was observed. This indicates chemical rearrangement of the products initially formed on the fiber surface. © 2014 Wiley Periodicals, Inc.
Gaffar Hossain K.M.,V Trion GmbH |
Gaffar Hossain K.M.,University of Barcelona |
Grabher G.,V Trion GmbH |
Tzanov T.,V Trion GmbH
Melliand International | Year: 2012
Protein fibers such as wool are most readily dyed with a wide range of dye classes under acid and neutral conditions due to the numerous reactive functional groups present. The only dye class that lacks the ability to absorb is cationic dye. In this work, enzymatic functionalization of protein fiber is performed prior to dyeing to posses the ability to adsorb cationic dye (CI. Basic Violet 3) from water. A natural compound, caffeic acid, to provide an available carboxylic group, was grafted on the fiber enzymatically using laccase. The electrochemical method and oxygen consumption study confirmed the oxidation reaction of caffeic acid through laccase. FTIR analysis provided supporting evidence of phenol compound being grafted on the fiber. Functionalized protein fiber was then used in experiment on dyeing with cationic dye in an exhaust method. Results of the enzymatic functionalization of protein fiber on dyeing kinetic was investigated through the calculation of dye absorption rate and confirmed an increasing of exhaustion and fixation compared to the untreated fiber within a shorter time at low temperatures.
V Trion Gmbh | Date: 2013-08-23
An electrode for a galvanic cell, characterized by a carrier, which is provided with an embroidery, wherein at least a part of the surface of the embroidery is configured to be electrically conductive.