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Title:Zeta potencial PA 6
Authors:ID Šoster, Robert (Author)
ID Veronovski, Nika (Author)
ID Tušek, Lidija (Author)
ID Stana-Kleinschek, Karin (Author)
ID Strnad, Simona (Author)
ID Ribitsch, Volker (Author)
Files:.pdf Tekstilec_2003_Soster_et_al._Zeta_potencial_PA_6.pdf (420,18 KB)
MD5: 400E81DF665261191EE98536AD03984D
PID: 20.500.12556/dkum/8c1ed528-7bc3-4dbb-a43c-376b4965d913
 
URL http://www.tekstilec.si/wp-content/uploads/2003/11/Zeta-potencial-PA-6.pdf
 
Language:Slovenian
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:V raziskavi smo preučevali elektrokinetične lastnosti poliamida 6 v obliki (a) folije in (b) tekstilnega filamenta ob uporabi dveh merilnih celic. Merili smo potencial zaradi pretoka in iz tega določili zeta potencial (▫$\zeta$▫ v odvisnosti od pH vrednosti medija. Meritve na posameznem materialu smo preučevali s stališča ponovljivosti. S tem namenom smo opravili meritve na 10 preskušancih istega vzorca. Določili smo osnovne statistične pokazatelje ponovljivosti za ▫$\zeta$▫ pri pH 3 in 9 ter izoelektrično tocko. Metodo smo optimirali glede na čas nabrekanja v raztopini elektrolita pred meritvijo in maso materiala v cilindrični celici. Meritve v 0,001 M KCl na obeh vrstah materiala kljub različni nadmolekulski in površinski strukturi dobro sovpadajo. Krivulje ▫$\zeta$▫=▫$\zeta$▫(pH) imajo pričakovan potek. PA 6 kaže amfoterno naravo zaradi vsebnosti amino in karboksilnih skupin. V alkalnem mediju disociirajo karboksilne skupine, kar povzroči negativen ▫$\zeta$▫ (folija: (-32,9▫$\pm$▫ 1,6) mV, filament: (-35,2▫$\pm$▫2,0) mV pri pH 9). V kislem mediju kaže PA kationski značaj zaradi disociacije amino skupin (folija: (24,5▫$\pm$▫1,7) mV, filament: (15,1▫$\pm$▫1,1) mV pri pH 3). Izoelektrična točka, kjer je ▫$\zeta$▫ enak 0, se nahaja za folijo pri pH vrednosti 4,7▫$\pm$▫0,1, za filament pa pri 4,9▫$\pm$▫ 0,1.
Keywords:polimeri, poliamid 6, elektrokinetične lastnosti, potencial zaradi pretoka, zeta potencial, filament, folija
Publication status:Published
Publication version:Version of Record
Year of publishing:2003
Number of pages:str. 342-347
Numbering:Letn. 46, št. 11/12
PID:20.500.12556/DKUM-67876 New window
ISSN:0351-3386
UDC:678.6:541.64:577.352:537.3.08
ISSN on article:0351-3386
COBISS.SI-ID:8526870 New window
NUK URN:URN:SI:UM:DK:JS3BPO6A
Publication date in DKUM:01.09.2017
Views:1868
Downloads:186
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Tekstilec. glasilo slovenskih tekstilcev
Shortened title:Tekstilec
Publisher:Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Društvo inženirjev in tehnikov tekstilcev, Univerza v Ljubljani, Naravoslovnotehniška fakulteta, Oddelek za tekstilstvo, Založba Univerze v Ljubljani
ISSN:0351-3386
COBISS.SI-ID:763396 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.09.2017

Secondary language

Language:English
Title:Zeta potential of PA 6
Abstract:This paper investigates electrokinetic properties of polyamide 6 in a form of (a) foil and (b) textile filament using two measurement cells. The streaming potential was measured and the zeta potential ▫$\zeta$▫ as a function of the pH value of medium was determined. The reproducibility of measurements was determined with 10 samples of each material. The basic statistics regarding ▫$\zeta$▫ at pH of 3 and 9 and isoelectric point (IEP) were determined. Furthermore, the wetting time in the electrolyte solution before the measurement and the mass of material in cylindrical cell were optimized. The measurements in 0.001 M KCl on both materials coincide with each other quite well in spite of different supermolecular and surface structure. The ▫$\zeta$▫-pH curves show the expected form. PA 6 is amphoteric due to presence of the amino and carboxyl groups. In the alkaline environment the carboxyl groups dissociate thus the ▫$\zeta$▫ is negative (foil: (-32.9▫$\pm$▫1.6)mV, filament: (-35.2▫$\pm$▫2.0) mV at pH of 9). In the acid environment PA 6 shows a cationic nature due to the dissociation of the amino groups (foil: (24.5▫$\pm$▫1.7) mV, filament: (15.1▫$\pm$▫1.1) mV at pH of 3). The isoelectric point, where f is equal to 0, was found for foil at pH value of (4.7▫$\pm$▫0.1) and for filament at (4.9▫$\pm$▫0.1), respectively.
Keywords:polymers, polyamide, elektrokinetic properties, streaming potential, zeta potential, filament, foil


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