Modifikacije PA 6 z $NH_3$ plazmo

Tušek, Lidija; Stana-Kleinschek, Karin; Ribitsch, Volker

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Title:	Modifikacije PA 6 z $NH_3$ plazmo
Authors:	ID Tušek, Lidija (Author) ID Stana-Kleinschek, Karin (Author) ID Ribitsch, Volker (Author)
Files:	Tekstilec_2002_Tusek,_Stana-Kleinschek,_Ribitsch_Modifikacije_PA_6_z_NH3_plazmo.pdf (636,64 KB) MD5: E0FF2327E43CA2FC7D3E4425394891C8 PID: 20.500.12556/dkum/aaf14e13-b123-4e7d-9ab5-b266feae43a1 http://www.tekstilec.si/wp-content/uploads/2002/03/Modifikacije-PA-6-z-NH3-plazmo.pdf
Language:	Slovenian
Work type:	Scientific work
Typology:	1.01 - Original Scientific Article
Organization:	FS - Faculty of Mechanical Engineering
Abstract:	S plazmami modificiramo površinske lastnosti različnih materialov, tudi tekstilnih. Na površine lahko uvedemo dodatne ali nove funkcionalne skupine, jih prevlečemo s tankimi polimernimi filmi ali očistimo. V naši raziskavi smo z nizkotlačno amoniakovo plazmo obdelovali PA 6 folijo ter ovrednotili dosežene modifikacije površine v odvisnosti od časa obdelave (od 7 do 540 s). Z merjenjem stičnega kota smo ugotavljali izboljšanje hidrofilnosti površin, s potencialom zaradi pretoka smo spremljali spremembe površinskega naboja, z elektronsko spektroskopijo (XPS) smo analizirali kemijsko sestavo površin, z mikroskopijo atomskih sil (AFM) pa smo raziskovali topografijo površin. Rezultati so pokazali, da so modifikacije odvisne od časa obdelave. Pri obdelavi PA 6 z $NH_3$ plazmo dosežemo boljšo omočljivost, saj se stični koti zmanjšajo. Z daljšim časom obdelave na površini PA 6 nastaja vedno več funkcionalnih skupin, ki vsebujejo dušik, kar se poleg povečane vsebnosti dušika na površini folije kaže tudi v premiku izolektrične točke (IET) k višjim ph vrednostim. Največji premik IET smo zasledili pri foliji, ki smo jo obdelovali 20 s (od ph 4,2k 6,2). če je čas obdelave daljši, plazma v večji meri uniči površino, pri čemer se odstranjujejo razgradni delci, za to se vsebnost dušika zmanjša, stični koti se nekoliko povečajo in IET se pomakne nazaj k nižjim ph vrednostim (k ph 5,6 pri času obdelave 180s). AFM slike neobdelanih in obdelanih folij so pokazale, da se zaradi obdelave številnejši in večji, srednja hrapavost pa se zato poveča iz 4nm (neobdelan vzorec) na 13,6 nm (čas obdelave 540s).
Keywords:	tekstilna vlakna, poliamid 6, površinska modifikacija, NH3 plazma, amino skupine, zeta potencial, stični kot, XPS, AFM
Publication status:	Published
Publication version:	Version of Record
Year of publishing:	2002
Number of pages:	str. 61-68
Numbering:	Letn. 45, št. 3/4
PID:	20.500.12556/DKUM-67825
ISSN:	0351-3386
UDC:	677.494.675.016/.017
ISSN on article:	0351-3386
COBISS.SI-ID:	7181078
NUK URN:	URN:SI:UM:DK:PDDRW56P
Publication date in DKUM:	31.08.2017
Views:	1896
Downloads:	226
Metadata:
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

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:	31.08.2017

Secondary language

Language:	English
Title:	Modifications of PA 6 achieved by $NH_3$ plasma
Abstract:	Plasmas are widely used to modify surface properties of various materials, including textiles. Additional or new groups are introduced to the surfaces, or the surfaces, or the surfaces are coated with thin polymer films or special plasma cleaning of surfaces is carried out. This work deals with low pressure $NH_3$ plasma treatment of PA 6 foils and the evaluation of surface modification as a function of treatment time (7 to 540s). The introduced functionalities were observed by contact angle measurements (assessment of wettability), streaming potential measurements (surface charge), XPS analysis (nature of introduced functionalities), and AFM (surface topography). The results show that achieved modifications depend on treatment time. $NH_3$ plasma improves wettability of PA 6 reducing the contact angles. The introduction of N-containing groups is increasing with longer treatment time. The nitrogen content on the foil's surface is increased and the isoelectric point (IEP) is shifted toward higher ph values. The biggest shift of IEP was found when the treatment time was 20 s (from ph of 4,2 toward ph of 6,2). With longer treatment time, the negative plasma effect of surface destruction prevails over the positive effect of the introduction of functional groups. The nitrogen content, therefore, is reduced, contact angles are increased and IEP is shifted toward ph of 5,6 (treatment time of 180s). AFM images of non-treated samples show that plasma treatment causes loose debris on the surface, which become more numerous and larger with longer treatment time. The mean roughness is increased from 4nm (non-treated sample) to 13,6 nm (treatment time of 540s).
Keywords:	textile fibres, polyamide 6, surface modifications, NH3 plasma, amino groups, zeta potential, contact angle, XPS, AFM

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