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undergraduate thesis
Potenciometrijska karakterizacija interakcije amiloze i oktadecil – trimetil amonijevog bromida
2014. urn:nbn:hr:182:751649
Pavić, Doroteja
Josip Juraj Strossmayer University of Osijek
Department of Chemistry

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Pavić, D. (2014). Potenciometrijska karakterizacija interakcije amiloze i oktadecil – trimetil amonijevog bromida (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:751649

Pavić, Doroteja. "Potenciometrijska karakterizacija interakcije amiloze i oktadecil – trimetil amonijevog bromida." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2014. https://urn.nsk.hr/urn:nbn:hr:182:751649

Pavić, Doroteja. "Potenciometrijska karakterizacija interakcije amiloze i oktadecil – trimetil amonijevog bromida." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2014. https://urn.nsk.hr/urn:nbn:hr:182:751649

Pavić, D. (2014). 'Potenciometrijska karakterizacija interakcije amiloze i oktadecil – trimetil amonijevog bromida', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 19 April 2024, https://urn.nsk.hr/urn:nbn:hr:182:751649

Pavić D. Potenciometrijska karakterizacija interakcije amiloze i oktadecil – trimetil amonijevog bromida [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2014 [cited 2024 April 19] Available at: https://urn.nsk.hr/urn:nbn:hr:182:751649

D. Pavić, "Potenciometrijska karakterizacija interakcije amiloze i oktadecil – trimetil amonijevog bromida", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:182:751649

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TitlePotenciometrijska karakterizacija interakcije amiloze i oktadecil – trimetil amonijevog bromida
Title (english)Potentiometric characterisation of amylose and octadecyl – trimethyl ammonium bromide interaction
AuthorDoroteja Pavić
MentorNikola Sakač (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
Osijek
Defense date and country2014, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Tenzidi ili površinski aktivne tvari su bifunkcionalni organski spojevi koji se sastoje od hidrofilnog i hidrofobnog dijela. Koriste se u prehrambenoj (pekarski proizvodi), farmaceutskoj, kemijskoj i sličnim industrijama. Amiloza je esencijalni nerazgranati oblik škroba. Sastoji se od glukoznih jedinica povezanih α-1,4-glikozidnim vezama koji čine spiralno uvijeni lanac u obliku heliksa. Potenciometrijskom titracijom otopina amiloza (0; 0.1; 0.5; 1; 2 i 4%) s oktadecil-trimetil amonijevim bromidom (4 x 10-3 moldm-3) pratilo se stvaranje inkluzijskog kompleksa promjenom kritične micelarne koncentracije. Kompleks amiloze s OTAB nastaje tako da masni ugljikovodični lanac kationskog tenzida OTAB ulazi u heliks amiloze. Elektrode koje su se koristile tijekom eksperimenta bile su srebro/srebrov klorid (Metrohm) kao referentna elektroda i tenzidnoosjetljiva elektroda s plastificiranom PVC membranom vlastite izradbe.
Abstract (english)
Tensides or surfactants are amphiphilic organic compounds that consist of both hydrophobic and hydrophilic parts. Tenzides are used in food industry (bakery), pharmaceutical industry, chemical industry, etc. Amylose is an essential unbranched form of starch. It is composed of glucose units which are linked with α-1,4- glucosidic bounds creating a spiral chain in shape of a helix. Potentiometric titration of amylose (0; 0.1; 0.5; 1; 2 and 4%) with octadecyl-trimethyl ammonium bromide (4 x 10-3 moldm-3) was followed by the formation of inclusion complex by changing the critical micellar concentration. In amylose OTAB complex formation mechanism fatty hydrocarbon chain cationic surfactants OTAB enters the amylose helix. The electrodes that were used during the experiment were silver/silver chloride (Metrohm) as the reference electrode and surfactant-sensitive electrodes with plasticized PVC membrane.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:751649
Study programmeTitle: Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
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Created on2016-07-13 07:04:34