Naslov
Changes of Physical-Mechanical Properties of Natural and Man-made Plasma-Treated Cellulosic Fabrics

Autori
Ercegović Ražić, Sanja ; Peran, Jelena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
21 st International Scientific Meeting on Vacuum Science and Techniques ; Book of Abstract / Krstulović, N./ Kregar, Z. - Zagreb : Hrvatsko Vakuumsko Društvo (HVD), 2014, 39-39

ISBN
978-953-98154-3-9

Skup
21. International Scientific Meeting on Vacuum Science and Techniques ; Book of Abstract

Mjesto i datum
Samobor, Hrvatska, 08.05.2014. - 09.05.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
plasma treatments ; physical propeties ; mechanical properties ; cellulosic fabrics

Sažetak
The research presented describes the impact of the plasma treatments on physical and mechanical properties of natural and man-made cellulosic fabrics defined structural characteristics. Oxygen (O2) and Argon (Ar) as non-polymerizing working gases were used in the experiments. Plasma treatments were carried out using a low-frequency plasma system of 40 kHz under process conditions: gas flowrate of 40 cm3/min, pressure of 0.3 mbar, power of 300 W, and treatment time of 5 and 10 min. Two fabrics of cotton, lyocell and modal fibers of approximately equally structural characteristics but diferent linear density were used in experiments. Through the preliminary researches process parameters of plasma treatments were optimized in order to achieve the fiber with more reactive sites on the surface and more appropriate for physical - chemical treatments to obtaining new functional properties. Such process are complex, and the final effects depend on many factors ; type of used material, plasma type, plasma parameters and treatment conditions. For better analysing of the physical properties changes of the thickness, mass per unit area, number of threads per cm (linear density) and porosity were obtained. Mechanical properties - breaking force and breaking elongation were tested, according to HRN EN ISO 13934-1:2013, while the bending rigidity was tested using standardized method according to HRN EN ISO 9073-7:2003. The results of physical properties tested of all fabrics suggest that the oxygen and argon plasma treatment leads to a certain thickening of macrostructure, which is particularly reflected in the decrease in porosity of the treated samples. The results provide data which indicate on increased of breaking force after plasma treatments of natural (cotton) fabrics, in relation to the man-made cellulosic fabrics (lyocell and modal) where the lower reduction of breaking force is evident. Bending rigidity of tested fabric samples indicate on the similar effect, but results are non-uniform.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

Napomena
Rad je financiran sredstvima odobrenim od Sveučilišta u Zagrebu za Potporu istraživanju (2013./2014.) vezanu uz Razvoj visokovrijednih biokompozita s ojačalom od celuloznih vlakana iz domaćih izvora, voditelja izv.prof.dr.sc. Antonete Tomljenović

POVEZANOST RADA