Usporedba eksperimentalnih i teorijskih vrijednosti zaštitnih faktora u kremama za sunčanje

master's thesis

• Title (english): Comparison of experimental and theoretical values of protective factors in sunscreens
• Author: Lucija Detić
• Mentor: Vladimir Dananić (mentor)
• Committee member: Vladimir Dananić (predsjednik povjerenstva)
• Committee member: Iva Movre Šapić (član povjerenstva)
• Committee member: Vesna Ocelić Bulatović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2023-09-13, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry

Abstract

U ovom radu obraditi će se tema usporedbe teorijskih i eksperimentalnih vrijednosti faktora zaštite od sunca. Teorijski dio obuhvaća osnovnu teoriju vezanu uz shvaćanje teme ovog diplomskog rada, teorija vezana uz proizvode za zaštitu od sunca, njihove regulative,primjene, utjecaj na ljudsko zdravlje i okoliš. Kako bi lakše razumjeli eksperimentalni dio definirati ćemo osnovne pojmove kao što je sunčevo zračenje,
UV zračenje, MED i SPF faktor. Rad također obrađuje numerički izračun SPF faktora koji se koristiti u eksperimentalnom djelu rada. Kroz ovaj rad ukratko ćemo proći kroz osnovne tehnike određivanja faktora zaštite od sunca u kozmetičkim proizvodima, s naglaskom na SPF metodu koja se koristi u eksperimentalnom djelu rada. Eksperimentalni dio obuhvaća postupak pripreme kreme za sunčanje, izračuna koncentracija UV filtera potrebnih za dobivanje željenih faktora, proces proizvodnje te u konačnici testiranje i provjeru podudaranja rezultata. Kao metoda testiranja koristi se ''in vivo'' SPF metoda provedena na nizu ispitanika. Cilj ovog rada je usporediti teorijske rezultate dobivene izračunom koncentracije UV filtera koji su potrebni za određeni zaštitni faktor i rezultata dobivenih eksperimentom, odnosno SPF metodom. Temeljem usporedbe rezultata napravit će se zaključak usporedbe teorije i eksperimenta, je li došlo do odstupanja i ako je koji je razlog tome.

Abstract (english)

This paper will deal with the topic of comparison of theoretical and experimental values of sun protection factors. The theoretical part includes basic theory related to the understanding of the subject of this thesis, theory related to sun protection products, their regulations, applications, impact on human health and the environment. In order to make it easier to understand the experimental part, we will define basic terms such as solar radiation, UV radiation, MED and SPF factor. The paper also deals with the numerical calculation of the SPF factor which will be used in the experimental part of the paper. In this work, we will briefly go through the basic techniques for determining sun protection factors in cosmetic products, with an emphasis on the SPF method used in the experimental part of the work.
The experimental part includes the procedure for preparing sunscreen, calculating the concentrations of UV filters needed to obtain the desired factors, the production process, and finally testing and checking the matching of the results. The "in vivo" SPF method performed on a number of subjects is used as a testing method. The aim of this work is to compare the theoretical results obtained by calculating the concentration of UV filters that are required for a certain protection factor and the results obtained by experiment, that is,
by the SPF method. Based on the comparison of the results, the conclusion of the comparison of theory and experiment will be made, whether there was a deviation and if so, what is the reason for it.

• Keywords: proizvodi za sunčanje; SPF faktor; MED; SPF metoda; UV zračenje; UV filteri; UVA; UVB
• Keywords (english): sunscreen products; SPF factor; MED; SPF method; UV radiation; UV filters; UVA; UVB
• Language: croatian
• URN:NBN: urn:nbn:hr:149:055769
• Study programme: Title: Materials Science and Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-09-21 12:21:55