undergraduate thesis
Potentiometric Characterisation of Amylose and Hexadecile - Trimethyl Ammonium Bromide Interaction

Natalija Stupar (2015)
Sveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za kemiju
Metadata
TitlePOtenciometrijska karakterizacija interakcije amiloze i heksadecil - trimitil amonijevog bromida
AuthorNatalija Stupar
Mentor(s)Nikola Sakač (thesis advisor)
Abstract
Amiloza je linearni prirodni polimer koji sudjeluje u izgradnji škroba. To je nerazgranati oblik škroba koji se sastoji od glukoznih jedinica povezanih α-1,4-glikozidnim vezama. Helikalna struktura amiloze može sadržavati hidrofobnu dodirnu površinu, stvarajući tako šupljinu pogodnu za stvaranje inkluzijskog kompleksa. Tenzidi imaju važnu ulogu u mnogim praktičnim primjenama i u sastavu su mnogih proizvoda. Koriste se u kemijskoj, farmaceutskoj i kozmetičkoj, prehrambenoj, naftnoj i drugim industrijama. Tenzidi ili površinski aktivne tvari su organski spojevi koji se sastoje od hidrofilne skupine i od hidrofobne dugolančaste ugljikovodične skupine. Potenciometrijskom titracijom otopina amiloze (0; 0.1; 0.5; 1; 2 i 4%) s HTAB - heksadecil-trimetil amonijevim bromidom (4 x 10-3 moldm-3) pratilo se stvaranje inkluzijskog kompleksa, što je rezultiralo pomakom kritične micelarne koncentracije. Nastajanje inkluzijskog kompleksa amiloze s HTAB događa se tako da ugljikovodični lanac tenzida ugrađuje se u helikalnu strukturu amiloze. Korištene elektrode tijekom eksperimenta su srebro/srebrov klorid (Metrohm) kao referentna elektroda i tenzidna elektroda s plastificiranom PVC membranom vlastite izradbe.
Keywordsamylose hexadecyl - trimethyl ammonium bromide surfactants potentiometric titration inclusion complex
Parallel title (English)Potentiometric Characterisation of Amylose and Hexadecile - Trimethyl Ammonium Bromide Interaction
GranterSveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za kemiju
PlaceOsijek
StateCroatia
Scientific field, discipline, subdisciplineNATURAL SCIENCES
Chemistry
Study programme typeuniversity
Study levelundergraduate
Study programmeChemistry
Academic title abbreviationuniv. bacc. chem.
Genreundergraduate thesis
Language Croatian
Defense date2015-09-17
Parallel abstract (English)
Amylose is linear polymer that contributes to the construction of starch . It is straight form of starch which contains glucose units connected with (α-1,4-glycosidic) bonds. Helical structure of amylose may contain hydrophobic contact area, creating cavitysuitable for creation of inclusion complex. Surfactants play an important role in many practical applications and are part of many products . They are used in chemical, pharmaceutical, cosmetic, food, oil industry etc. Surfactants or surface active agents are organic compounds comprising the hydrophilic groups and hydrophobic long chain hydrocarbon groups. The formation of the inclusion complex was followed by potentiometric titration of amylose (0 ; 0.1 ; 0.5 ; 1 ; 2 and 4%) with hexadecyl – trimethyl ammonium bromide ( 4 x 10-3 mol dm- 3) resulting in a shift of the critical micelle concentration. The formation of the inclusion complex with amylose HTAB occurs so that hydrocarbon chain cationic surfactant HTAB can be incorporated into a helix of amylose. Electrodes used during the experiment are silver/silver chloride (Metrohm) as a reference electrode and surfactant – sensitive electrodes with homemade plasticized PVC membrane.
Parallel keywords (Croatian)amiloza heksadecil-trimetil amonijev bromid potenciometrijska titracija inkluzijski kompleks
Resource typetext
Access conditionOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:182:287160
CommitterSanda Hasenay