Utjecaj površinsko aktivnih tvari na optičke karakteristike papira

master's thesis

• Author: Kristina Ćosić
• Mentor: Željka Barbarić-Mikočević (mentor)
• Committee member: Željka Barbarić-Mikočević (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2008-4-00, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

U diplomskom radu ispitivan je utjecaj različitih površinsko aktivnih tvari (natrijevog lauriletersulfata, kokamidopropil betaina i etoksilata masnog alkohola) i njihovog masenog udjela na optička svojstva papira koja su određivana sa i bez utjecaja UV zračenja i vidljivog dijela elektromagnetskog spektra. Isto tako ispitan je i utjecaj UV zračenja na papire obrađene u različitim površinsko aktivnim tvarima. Ispitivanja su načinjena s filtar papirom i fotokopirnim papirom dobivenim iz recikliranih vlakanaca.

Rad se sastoji od teorijskog i eksperimentalnog dijela. Teorijski dio opisuje svojstva površinsko aktivnih tvari, njihovu podjelu, te primjenu tri vrste površinsko aktivnih tvari u grafičkoj tehnologiji i papirnoj industriji. Eksperimentalni dio opisuje mjerene uzorke pri različitim masenim udjelima navedenih tvari. Mjerenja su izvedena pomoću spektrofotometra. Rezultati mjerenja obrađeni su u Origin Professional programu i napravljeni su u obliku spektrofotometrijskih krivulja.

Na kraju rada napravljen je ekološki osvrt, te utjecaj korištenih tvari na okoliš.

Abstract (english)

This thesis describes the effects of different surfactants (sodium lauryl ether sulfate, cocamidopropyl betaine and fatty acid etoxylate) and their mass fractions on the optical characteristics of paper which were measured with and without the effects of UV rays and the visible part of electromagnetic spectrum. On the same way was the effect of UV rays applied on the paper treated by different surfactants. The research was carried out with filter paper and photocopy paper made from recycled fibre.

The practical work consists of theoretical and experimental parts. The theoretical part describes the characteristics of surfactants, their division and use in three types of surfactants in graphic technology and paper industry. The experimental part describes the measurements of samples in effect to different mass fractions of the above. The measurements were processed using the spectrophotometer. The measurment results were conducted in the Origin Proffesional program and were presented in spectrophotometric curves.

In the end an enviromental review and the effects of the above on the enviroment were made.

• Keywords: površinsko aktivne tvari; elektromagnetsko zračenje; optička svojstva papira; starenje papira
• Keywords (english): surfactants; electromagnetic radiation; optical characteristics of paper; paper ageing
• Language: croatian
• URN:NBN: urn:nbn:hr:216:960057
• Study programme: Title: Graphic technology; specializations in: Graphic technology, Design of graphic products; Course: Graphic technology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije (sveučilišni/a magistar/magistra inženjer/inženjerka grafičke tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-04-17 10:40:16