diplomsko delo
Pia Pajk (Author), Janez Cerkovnik (Mentor)

Abstract

Sodobni trendi pri strojnem pranju perila gredo v smer pranja z majhnimi količinami vode in pri nizkih temperaturah, da je poraba električne energije čim manjša. Tekoči detergenti, ki se vse pogosteje uporabljajo pri pranju, ne zagotavljajo higienske neoporečnosti, zato je potreba po razvoju detergenta, ki bi zagotavljal tako estetsko kot tudi higiensko čistočo, zelo velika. Vodikov peroksid kot okolju prijazna spojina lahko kot dodatek v tekočem detergentu poskrbi za higiensko, surfaktanti pa za estetsko čistočo, medtem ko stabilizatorji zagotavljajo čim večjo stabilnost vodikovega peroksida v takšnih formulacijah. V diplomskem delu sem raziskovala vpliv različnih kombinacij surfaktantov in stabilizatorjev na stabilnost 12 % vodikovega peroksida, spremembe pH raztopin ter kapaciteto in stabilnost pene, ki jo tvorijo vzorci. Koncentracijo vodikovega peroksida v študiranih formulacijah sem določevala z avtomatsko potenciometrično titracijo z natrijevim tiosulfatom v časovnem razponu osmih mesecev. Dobro stabilnost so pokazale vse formulacije vodikovega peroksida s 5 % vsebnostjo surfaktantov, stabilizirane s kombinacijo citronske in dipikolinske kisline kot ekološko sprejemljivima stabilizatorjema.

Keywords

surfaktanti;stabilizacija;tekoči detergenti;potenciometrija;avtomatska potenciometrična titracija;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [P. Pajk]
UDC: 546.215(043.2)
COBISS: 126489859 Link will open in a new window
Views: 60
Downloads: 21
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Other data

Secondary language: English
Secondary title: New stable formulations of 12 % hydrogen peroxide and surfactants
Secondary abstract: Modern trends in machine washing clothes are moving toward washing with small amounts of water and at low temperatures to minimize power consumption. Liquid detergents, which are increasingly used for washing, do not guarantee hygienic integrity, thus there is a greater need to develop a detergent that ensures both aesthetic and hygienic cleanliness. Hydrogen peroxide as an environmentally friendly compound can be used as an additive in liquid detergents to provide hygienic, surfactants for aesthetic cleanliness, while stabilizers ensure maximum stability of hydrogen peroxide in such formulations. In this paper, I investigated the influence of different combinations of surfactants and stabilizers on the stability of 12 % hydrogen peroxide, on changes in the pH of the solutions, and on the capacity and stability of the foam formed by the samples. The hydrogen peroxide concentration in the formulations studied was determined by automatic potentiometric titration with sodium thiosulfate over a period of eight months. Good stability was shown by all hydrogen peroxide formulations with 5 % surfactant content, stabilized with a combination of citric and dipicolinic acids as ecologically compatible stabilizers.
Secondary keywords: hydrogen peroxide;surfactants;stabilization;liquid detergents;automatic potentiometric titration;Vodikov peroksid;Univerzitetna in visokošolska dela;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000373
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemija
Pages: 42 str.
ID: 16382213