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Achievement of multifunctional silver-based textile fabrics

Programme: EUREKA
Contract Nr.: 174
EUREKA project number: E! 3871- FUNTESIL

Priority field no.: 7
S/T field no.: 014 LIGHT INDUSTRY
S/T subfield title: Machines and machinery for the light industry; Products and technologies in the light industry

Duration: october 2008 – october 2011

Project description:

The Funtesil project is focused on the main objective concerning the exploitation of silver properties (either incorporated in fibers or applied by means of finishing) for the achievement of textile fabrics with antimicrobial, antistatic and thermo-regulating activity. The textile fabrics achieved will be especially meant for clothing used in daily-wear and sportswear: T-shirts, blouses or sweatshirts, underwear, stockings, and socks.
The specific objectives foreseen to reach the aim proposed are:
- the selection of yarns and of fibrous compositions based on silver, manufacture technologies for the bactericide textile fabrics, analysis method for the physical-chemical and biological properties testing of the bactericide fabrics and compounds;
- the elaboration of technological processes for the silver-based textile fabrics manufacturing;
- the examination of biocide and comfort performances the achieved textile fabrics display;
- the evaluation of clinical efficacy, of the safety and lack of toxicity for the fabrics manufactured in the treatment of patients affected by severe skin infections possible through the performance of specific tests;
- the elaboration of the technical material regarding the research results
- information dissemination.

Stages / Activities:
Stage I: Elaboration of the manufacture technology for the bactericide textile fabrics / 31.01.2009
I.1 Technical-scientific study
I.2: Design of the laboratory technology

Stage II: Achievement of new generation textile products based on silver or its combinations /30.09.2009
II.1 Manufacture of socks / stockings with different yarn fibrous compositions based on silver/polyester, polyamide, elastane, and cotton
II.2 Analysis of physical-chemical and comfort properties for the articles achieved

Stage III: Achievement of silver-based knits meant for clothing /30.09.2010
III.1 Manufacture of knits with various fibrous compositions based on silver
III.2 Analysis of the physical-mechanical and comfort properties for the articles manufactured

Stage IV: Toxicity testing for the textile articles manufactured over the human body /30. 09.2011
IV.1 Assessment of the clinical efficiency and of manufactured textile products safety
IV.2 Presentation and demonstration of manufactured biocide textile materials functionality and applicability for the promotion purpose
IV. 3 Identification and promotion of intellectual property rights

Stage V. Report on the economical effects/impacts achieved by the benefiting companies following the use of the biocide textile materials/30.09.2012

Project objectives:
The specific objectives foreseen in order to reach the scope proposed are:
- selection of silver-based yarns and fibrous compositions, of manufacturing technology for the biocide textile fabrics, of analysis methods meant to test the physical-chemical and biological properties of the compounds and of the bactericide textile materials;
- elaboration of technological manufacturing processes for the silver-based textile materials;
- examination of the biocide and comfort performances the achieved textile materials display;
- evaluation of the clinical efficacy, of the safety and lack of toxicity for the materials manufactured in terms of treatment directed to patients affected by severe skin infections by means of conducting specific tests;
- elaboration of the technical material regarding the results generated by research;
- information dissemination.

IW – Textile research Institute
Brzezinska, 5/15 92-103, Lodz, Poland
Tel +48 42 68 25 936; Fax +48 42 68 42 300; www.iat.com.pl
Contact: M.Sc. Lidia Halaszczyk-Piesiak
Tel +48 42 68 25 922

SOCIETATEA COMERCIALA SC MAGNUM SX SRL – Romanian Project Coordinator/Manager
strada Ferdinand nr. 61 , sector 2, telefon. 021.3404365 ; fax. 021.3401430
Contact: Radu Marcela, e-mail: magsx@fx.ro

Spolsin Spol. S.R.O.
Moravska, 1078 560 02, Ceska Trebova, Czech Republic
Tel +420 465 53 11 03 ; Fax +420 465 53 30 24; www.spolsin.cz
Contact: Ph.D. Karel Sanda, sanda@spolsin.cz

Elkede Technology And Design Centre S.A.
12th Km Road National Athens-Lamia Moraitini Str. 144 52 Metamorfosi (Athens), Greece
Tel +30 210 285 5580, Fax +30 210 284 6471, www.elkede.gr
Contact: Mr. Theodoros Giakoumakis
Tel +30 21 02 85 55 80; tgiak@elkede.gr

Aitex - Asociacion De Ivnestigacion De La Industria Textil
Emilio Sala Square, 1, 03801 Alcoy, Spain
Tel +34 96 554 22 00; Fax +34 96 554 34 94; www.aitex.es
Contact: Ms. Rosa Lopez, rlopez@aitex.es

The Research - Development National Institute For Textile and Leather
Str. Lucretiu Patrascanu, 16; 030 508 Bucharest; Romania
Tel +40 21 340 49 28; Fax +40 21 340 55 15
Contact: Dr. Eng. Iuliana Dumitrescu, certex.ns@.certex.ro

Univ. Of Maribor / Faculty Of Mechanical Engineering/Department Of Textile Materials And Design
Smetanova Ulica, 17 2000 Maribor, Slovenia
Tel +386 2220 79500, Fax +386 2220 7990, www.fs.uni-mb.si
Contact: Univ- Prof.- Dr Jelka Gersak, jelka.gersak@uni-mb.si

Hijos De Miguel Ivorra, S.A.
Baneres, 6 03802 Alcoy, Spain
Tel +34 966 54 02 73; Fax +34 966 52 63 04
Contact: Mr. Miguel Juan Ivorra Ripoll

Prevent Mislinja D.O.O., Working Clothes, Gloves And Trade
Gozdarska Cesta, 388 2382 Mislinja, Slovenia
Tel +386 2 8857 806, Fax +386 2 8857 800, www.prevent.si
Contact : Univ. Dipl. Oec Andreja Oder, andreja.oder@prevent.si

telefon: 0234/261001, fax: 0234/265917; e-mail: stofebh@dns-net.ro
Contact: ing. Campanu Stefan

Stage I: Elaboration of the manufacture technology for the bactericide textile fabrics (october 2008 – january 2009)
In stage I, a technical-scientific study was conducted and manufacturing technologies were designed for the textile fabrics, as well as their characterization methods.

The technical-scientific study allowed:
1. The evaluation of need and usefulness for the anti-bacterial textile materials: the study proved the need to achieve the textile materials with biocide properties based on two considerations:
- the textile materials constitute carrier environments, being also proper for the microorganisms growth;
- these have a wide applicability – in the sanitary field for health protection, both of the medical staff and of the patients; in the sports field and leisure activities, to remove the unpleasant sensorial effects induced by the bacterial metabolism and the infections caused by bacteria and fungi (Tricophyton mentagrophytes, Proteus Mirabillis, Candida Albicans), but also in the field of technical articles, where the problem of materials degradation caused by various microorganisms imposes their use;
2. The evaluation of bactericide and bacteriostatic compounds used on global plan for textile materials treatment in terms of important characteristics displayed, advantages and disadvantages, and their application possibilities:
An extended documentation was carried on over the silver compounds, referring to types used (salts, oxides, metals, complexes), their antibiotic, antimicrobial, and antivirotic properties, their mechanism of interaction with microorganisms, and their toxicity. Advantages of silver metal nano-particles were highlighted due to the extended contact area, to the large number of particles per unit of surface area, to their increased availability of generating biocide silver ions aimed to enhance the antimicrobial effect.
Out of the types of bactericide compounds existent on the international market, there were s-au selected the silver-based compounds with an increased efficiency and facile applicability on the textile supports, respectively:
Sanitized® T 27-22 Silver: compatible with other textile chamicals; excellent washing resistance, good tolerance for skin and eyes (OECD Test 406); and
Gemsol: dispersion of silver nano-particles easily applied on the textile supports
The application of these compounds will allow an efficient control of bacteria and fungi occurring on such material to be applied to, an increased efficiency, washing resistance, resistance to bleaching, ironing; preserving the material properties, low environmental impact, health enhancement for the wearer.
3. Technologies assessment, selection and settling for the achievement of silver-based knits:
Considering the existing technologies employed to manufacture antibacterial materials (antibacterial compounds grafting on the textile materials surface, application during textile finishing; antibacterial agents direct introduction into synthetic fibers during extrusion), two methods were selected:
- textile materials knitting/weaving, having included in their fibrous composition silver nano-particles containing yarns;
- knits/wovens manufacture with various fibrous compositions (bamboo, bamboo/ polyester, cotton/bamboo) and thereafter application on these of various finishings containing silver compounds or silver nano-particles.
Thus, there will be possible to assess both the biological efficiency, and the final costs of articles manufactured.
The application of selected textile finishes, respectively products Sanitized® T 27-22 Silver and Gemsol, on the knits/wovens achieved will be done by extrusion at room temperature, depending on the textile material mass, according to producer specifications, as well as by means of a procedure following to be settled in the next stage, supposing the application by exhaustion within an UV bath.

4. Settling of the analysis methods directed to underline the physical-chemical and biological properties of the silver-based bioactive textile materials manufactured:
- the materials surface characterization will be performed by means of different techniques, such as SEM, EDX, optical microscopy;
- use of TGA/DTA/DSC for decomposition phenomena, phase changes, temperature shifts/changes for materials decomposition;
- lifespan analysis in the case of textile materials biocide activity will be carried on by the help of atomic absorption spectrometry;
- materials physical properties preservation will be highlighted by: measuring the absorption of fluids under pressure, of fluids vertical migration capacity, of the dehydration speed, of hydrofilicity and of the water contact angle, mass, density, breaking elongation and breaking resistance.
- comfort criteria the antibacterial materials should provide are analyzed by determination of textile materials porosity, air/water permeability, thermal-isolation degree, (resistance to heat transfer by conduction and by evaporation);
- biocide activity will be assessed by means of biological tests specific to the textile fabrics (Kirby Bauer, ISO/DIS 20743).

Information Dissemination:
- Iuliana Dumitrescu*, Ana Maria Mocioiu*, Hortensia Clara Radulescu*, Bancescu Gabriela**, Anti-Bacterial Fabrics Made of Cotton /Amicor and Cotton/Bamboo, TexTeh, 7-8 Mai, Bucuresti,
* Instittuul National de C&D pentru Textile si Pielarie
**Universitatea de Medicina si Farmacie, Bucuresti, Romania

- Zampetakis Aristotelis, Katsaros Giorgos, Iuliana Dumitrescu,

- Iuliana Dumitrescu1, Ana Maria Mocioiu1, Hortensia Clara Radulescu1, Zampetakis Aristotelis2 , Bamboo and Cotton Fabrics ANTIBACTERIAL ACTIVITY, AUTEX 2009 WORLD TEXTILE CONFERENCE, May, 26-29, 2009 Çesme, Izmir, TURKEY
1National R&D Institute for Textile and Leather /INCDTP, Bucharest, Romania
2ELKEDE Technology and Design Centre,– Athens Greece

- Iuliana Dumitrescu, Clara Radulescu, Ana Maria Mocioiu, Surdu Lilioara, Adriana Subtirica,
The exploitation of the silver properties for the production of textiles possessing antimicrobial, antistatic and thermo-regulating properties, The International Conference LATEST ADVANCES IN HIGH TECH TEXTILES AND TEXTILES-BASED MATERIALS
23 -25 September 2009, Ghent Belgium