Utjecaj kokamidopropil betaina na optička svojstva fotokopirnih papira

master's thesis

• Author: Ana Vujević
• 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: 2008-11, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

U diplomskom radu ispitan je utjecaj amfotermne površinsko aktivne tvari kokamidopropil betain na optička svojstva nekih fotokopirnih papira različitih proizvođača dostupnih na hrvatskom tržištu (Navigator, Fabriano, Rcopy, Xerox, Pioneer, IQ i Plano Premium). Načinjene su dvije grupe ispitivanja koje se razlikuju po načinu obrade: a) namakanje i b) razvlaknjivanje uzorka svakog fotokopirnog papira u otopini površinsko aktivne tvari, w = 1,0%. U svrhu boljeg određivanja utjecaja kokamidopropil betaina na optička svojstva fotokopirnog papira načinjena je i obrada uzorka u destiliranoj vodi pod istim uvjetima. Isto tako određivan je i utjecaj ultraljubičastog zračenja na sve obrađene fotokopirne papire. Optička svojstva mjerena su spektrofotometrom, a rezultati su prikazani pomoću spektrofotometrijskih krivulja. Ovisno o proizvođaču, papiri su pokazali i različite rezultate na osnovu kojih je moguće odrediti i kvalitetu papira.

Abstract (english)

This thesis describes the effects of amphoteric surface active chemical cocamidopropyl betaine on the optical characteristics of photocopy papers of different producers available on the croatian market (Navigator, Fabriano, Rcopy, Xerox, Pioneer, IQ i Plano Premium). There were made two groups of experiments which were different by the way they were treated: a) soaking and b)desintegration of the sample every photocopy paper in the surfactant solution, w = 1,0%. For this purpose, better to determine the effects of cocamidopropyl betaine on the optical characteristics of photocopy paper, the same experiment was also made with distillated water under the same conditions. The influence of ultraviolet radiation on all treated photocopy papers was also determined at the same way. The measurements were processed using the spectrophotometer and the measurment results were presented in spectrophotometric curves. Depending on producers, photocopy papers have shown different results based on which we could also determine their quality.

• Keywords: fotokopirni papir; kokamidopropil betain; starenje papira; ultraljubičasto zračenje
• Keywords (english): photocopy paper; cocamidopropyl betaine; paper ageing; ultraviolet radiation
• Language: croatian
• URN:NBN: urn:nbn:hr:216:865116
• 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 10:30:58