prikaz prve stranice dokumenta Termodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda
  Download
PDF 517.09 KB
undergraduate thesis
Termodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda
Split: University of Split, University of Split, Faculty of science, 2020. urn:nbn:hr:166:436805
Šurina, Paola
University of Split
Faculty of Science
Department of Chemistry

Institutional repository: Repository of Faculty of Science

Cite this document

Šurina, P. (2020). Termodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda (Undergraduate thesis). Split: University of Split, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:166:436805

Šurina, Paola. "Termodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda." Undergraduate thesis, University of Split, Faculty of Science, 2020. https://urn.nsk.hr/urn:nbn:hr:166:436805

Šurina, Paola. "Termodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda." Undergraduate thesis, University of Split, Faculty of Science, 2020. https://urn.nsk.hr/urn:nbn:hr:166:436805

Šurina, P. (2020). 'Termodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda', Undergraduate thesis, University of Split, Faculty of Science, accessed 10 January 2025, https://urn.nsk.hr/urn:nbn:hr:166:436805

Šurina P. Termodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda [Undergraduate thesis]. Split: University of Split, Faculty of Science; 2020 [cited 2025 January 10] Available at: https://urn.nsk.hr/urn:nbn:hr:166:436805

P. Šurina, "Termodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda", Undergraduate thesis, University of Split, Faculty of Science, Split, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:166:436805

Metadata
TitleTermodinamika reakcija micelizacije natrijeva dodecil-sulfata u miješanim otapalima propan-1,2-diol - voda
Title (english)Thermodynamic properties of Sodium Dodecylsulfate in propane-1,2-diol - water mixtures
AuthorPaola Šurina
MentorPerica Bošković (mentor)
Committee memberPerica Bošković (predsjednik povjerenstva)
Committee memberMartina Gudelj (član povjerenstva)
Committee memberLinda Mastelić (član povjerenstva)
GranterUniversity of Split
Faculty of Science
(Department of Chemistry)
Split
Defense date and country2020-09-23, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Micelizacijsko ponašanje površinski aktivnih tvari od povećanog je interesa za istraživače zbog brojnih primjena u raznim poljima kao što su kozmetika, farmaceutski proizvodi, deterdženti, itd. Fenomen agregacije površinski aktivnih tvari proučavan je u raznim medijima kao što je voda, nepolarna i polarna otapala, elektroliti i smjese otapala. Istraživanja u raznim smjesama otapala su bitne se kako bi se dobio bolji uvid u mikroskopsko ponašanje i poboljšale performanse površinski aktivnih tvari s naglaskom na c.m.c i termodinamiku micelizacijske reakcije jer se na taj način mogu optimizirati svojstva otopina za razne komercijalne primjene. Prisutnost polarnog organskog otapala kao dodatka može značajno utjecati na termodinamička svojstva micelarnog koloida ionskog tenzida u vodi. Glikoli su alkoholi koji u svojoj strukturi imaju dvije hidrofilne -OH skupine i hidrofobnu skupinu ugljikova lanca, te su obje skupine sposobne za interakciju s ionskim površinski aktivnim tvarima u otopini kada su prisutni u smjesi s vodom. U ovom radu konduktometrijski je ispitivan utjecaj smjese propan-1,2-diol/voda na micelizacijsku reakciju SDS-a s fokusom na utjecaj duljine alkilnog lanca, temperature i koncentracije glikola. Zatim je iz temperaturne ovisnosti izmjerenih parametara izračunata termodinamika ovog procesa koja uključuje i entalpijski i entropijski doprinos prema standardnoj Gibbsovoj energiji micelizacije.
Abstract (english)
Surfactant´s micellization behavior is very interesting to researchers due to numerous applications in various fields such as cosmetics, pharmaceuticals, detergents, etc. The phenomenon of surfactant aggregation has been studied in various solutions such as water, nonpolar and polar solvents, electrolytes and solvent mixtures. Research in various solvent mixtures is essential in order to obtain a better insight into the microscopic behavior and improve the performance of surfactants with emphasis on c.m.c and thermodynamics of the micellization reaction and to optimize the properties of solutions in various commercial applications. The presence of a polar organic solvent as an additive can significantly affect the thermodynamic properties of the micellar colloid of the ionic surfactant in water. Glycols are alcohols with two hydrophilic -OH groups and a hydrophobic carbon chain group, and both groups are capable to interact with ionic surfactants in solution when present in a mixture with water. In this thesis, the influence of the propylene-glycol/water mixture on the micellization reaction of SDS was conductometrically investigated with a focus on the influence of the alkyl chain length, temperature and glycol concentration. Then, from the temperature dependence of the measured parameters, the thermodynamics of this process was calculated, which includes both enthalpy and entropy contribution according to the standard Gibbs free energy of micellization.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:166:436805
Study programmeTitle: Biology and Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije i kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije i kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-01-11 12:41:34