MENU

Addition of chemicals to polyamide for developing new fibres and manufactured goods in advanced textile field

The aim is to give added value to polyamide yarns/textiles.
special chemicals to be synthesized/added during spinning
process.New properties will be combined by end manufacturers
to enhance "push-pull" mechanism and bacteriostaticity.

The objective of this project is to develop new textiles using special fibres made from polyamide (PA) 6 and 6.6. These new fibres can be obtained by adding new chemicals suitably synthesized by a University Research Laboratory (TURKEY) and an Institute of Applied Research (FRANCE). These two laboratories will conduct extensive research on the basis of a considerable amount of spinning process data. This last subject is essential to optimize the chemical formula and physical characteristics of the materials. Complex organic/inorganic chemicals should confer the following features to PA yarns: - very high hydrophilicity - very high hydrophobicity - bacteriostatic behaviour. Screening for different additives will be carried out with the aim of finding the best qualities and quantities provided prices and/or time would not effect market placing. In a spinning plant, autonomous running parameters play a key role in obtaining good quality fibres. Therefore, process feasibility, together with feedback loops in close cooperation with partners, will form a part of the study. To obtain hydrophobic yarns, KOC UNIVERSITY (TURKEY) has already some know-how on silicone copolymers and polyamides. NYLSTAR will study process feasibility while LIEBAERT S.A. (BELGIUM) will test consumer approval and introduce machine modifications to better fit the new product. NYLSTAR will also undertake to develop the additives for use in industrial production. To produce water-absorbent yarns, we are seeking chemical additives that will be synthesized by RHONE-POULENC INDUSTRIALISATION (RP IND). As above, NYLSTAR will study process development in such a way to adapt to existing plants. THUASNE and LIEBAERT S.A. will produce new textiles in such a way as to enhance 'push-pull' mechanism. Currently, hydrophilicity can provide comfort up to a certain point. When moisture saturates and binds fabrics irreversibly, this can give an unwanted feeling of clamminess. End manufacturers, by composing yarns made of the same material (i.e. having the same mechanical and physical characteristics) in different three dimensional patterns, can produce textiles providing enhanced comfort. In the 'push-pull' mechanism, the body pushes moisture from the skin and the fabric pulls it away so the inside stays soft and dry. End manufacturers will also test market responses to the new products. The last fibre that we are going to develop is a bacteriostatic fibre. Antibacterial or bacteriostatic fibres have attracted considerable attention from the market, with end uses running from medical hosiery to working wear for the medical sector. In this part of the project, THUASNE will test the materials and give advice on a better spinning process. RP IND will develop the new additive that NYLSTAR will process. THUASNE will carry out experiments to verify that the antibacterial character does not kill the natural bacterial flora as the bacterial character must be biocompatible with human skin. Complex chemical compounds will be directly injected on the manifold before spinning. Chemicals can also be supplied in the form of master batches; this may be necessary depending on the chemical nature of the substances. Chemicals will be added in liquid or solid form either to the polyamide or the prepolymer during the polymerization reaction. To make a success of the new additives, NYLSTAR needs to make plant modifications on pilot and industrial scale. These will take the form of sophisticated injection tools and accurate measuring devices. The project will cover the complete manufacturing chain starting with the pre-polymer materials and going right up to the final fabrics, giving us a chance to promote technological innovation. Keywords: fibres, additivation, textile.
Acronym: 
YARNAD
Project ID: 
2 129
Start date: 
01-04-1999
Project Duration: 
37months
Project costs: 
2 630 000.00€
Technological Area: 
Market Area: 

Raising the productivity and competitiveness of European businesses through technology. Boosting national economies on the international market, and strengthening the basis for sustainable prosperity and employment.