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Title:Polisurfaktanti, kot inhibitorji korozijskih procesov
Authors:ID Vida, Ana (Author)
ID Fuchs Godec, Regina (Mentor) More about this mentor... New window
ID Bren, Urban (Comentor)
Files:.pdf VS_Vida_Ana_2024.pdf (2,57 MB)
MD5: 3F7FC9ABC3913A939535BB8276DA82F9
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V okviru diplomskega dela smo preučili inhibicijsko učinkovitost dveh neionskih polisurfaktantov kot zaviralcev korozijskega procesa z uporabo klasične potenciodinamske metode. Učinkovitost polisurfaktanta Pluronica F127 in PEG 1500 smo preučili v mediju 3,5 % NaCl. Nadalje smo v mediju 0,1 M HCl preiskali vpliv temperature na inhibicijsko delovanje PEG 1500 ter sinergijski učinek PEG 1500 ob dodatku surfaktanta Tritona X-100. Za zaključek smo preverili sposobnost tvorbe efektivnih adsorpcijskih prevlek preizkušenih inhibitorjev. Površine različnih vzorcev smo analizirali z merjenjem kontaktnega kota vodne kapljice, metodo infrardeče spektroskopije s Fourierjevo transformacijo ter z vrstično elektronsko mikroskopijo. Na podlagi rezultatov smo opredelili mehanizme adsorpcije ter potrdili inhibicijsko učinkovitost vseh uporabljenih neionskih spojin. Rezultati potrjujejo inhibicijsko delovanje, ki se izboljšuje s povečevanjem koncentracije uporabljenih inhibitorjev. V 3,5 % NaCl smo dosegli najboljšo inhibicijsko učinkovitost 94,6 % ob uporabi 0,3 mM Pluronica F127 ter inhibicijsko učinkovitost 90,73 % ob uporabi PEG 1500 koncentracije 0,1 M. Nadalje smo s PEG enake koncentracije v mediju 0,1 M HCl dosegli najboljšo inhibicijsko učinkovitost 74,62 % pri 303 K. Za konec pa smo potrdili sinergijsko delovanje PEG 1500 in Tritona X-100 ter njuno sposobnost tvorbe efektivnih adsorpcijskih prevlek.
Keywords:korozija, polisurfaktanti, adsorpcija, potenciodinamska metoda
Place of publishing:Maribor
Publisher:[A. Vida]
Year of publishing:2024
PID:20.500.12556/DKUM-89990 New window
UDC:620.193(043.2)
COBISS.SI-ID:213887235 New window
Publication date in DKUM:10.09.2024
Views:252
Downloads:90
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:22.08.2024

Secondary language

Language:English
Title:Polymeric surfactants as inhibitors of corrosion processes
Abstract:In this undergraduate thesis, the corrosion inhibition efficacy of two nonionic polymeric surfactants was studied using the classic potentiodynamic method. The effectiveness of the polysurfactants Pluronic F127 and PEG 1500 was examined in a 3,5 % NaCl medium. Additionally, in 0,1 M HCl, we investigated the influence of temperature on the inhibitory action of PEG 1500 and the synergistic effect of PEG 1500 combined with the nonionic surfactant Triton X-100. Moreover, we evaluated the ability of the tested inhibitors to form effective adsorption coatings. The surfaces of various samples were analyzed using contact angle measurements, the ATR-FTIR method, and scanning electron microscopy. Based on the results, we defined the adsorption mechanisms and confirmed the inhibition efficacy of all of the nonionic compounds used. The results confirmed the inhibition performance, which improved with increasing concentrations. In 3,5 % NaCl, we achieved the highest efficacy of 94,6 % using 0,3 mM Pluronic F127 and an efficacy of 90,73 % using PEG 1500 at a concentration of 0,1 M. Furthermore, with PEG 1500 at the same concentration in a 0,1 M HCl medium, we achieved the highest efficacy of 74,62 % at 303 K. Additionally, we confirmed the synergistic action of PEG 1500 and Triton X-100 and their ability to form effective adsorption coatings.
Keywords:corrosion, polymeric surfactants, adsorption, potentiodynamic method


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