Utjecaj vlakanaca konoplje na kemijsku stabilnost otisaka

undergraduate thesis

• Author: Lahorka Malnar
• Mentor: Željka Barbarić-Mikočević (mentor)
• Committee member: Vesna Džimbeg Malčić (član povjerenstva)
• Committee member: Željka Barbarić - Mikočević (član povjerenstva)
• Committee member: Sonja Jamnicki Hanzer (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2016-2-8, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

Industrijski uzgojena konoplja (Cannabis sativa L.) jednogodišnja je biljka iz

porodice dudova (Moraceae) od koje se dobiva veliki broj korisnih proizvoda,

kako u tekstilnoj i prehrambenoj tako i u papirnoj industriji. Kao sirovina za

proizvodnju papira konoplja se koristi od samog nastanka papira. Za

eksploataciju konoplja je spremna u kratkom vremenskom intervalu uzgoja tj.

nakon približno 120 dana, za razliku od drveta čiji se period uzgoja do

eksploatacije broji u godinama. Zbog sve većeg iskorištavanja šuma i njihovog

izumiranja povećava se korištenje vlakanaca iz jednogodišnjih biljaka kao i

potreba za odbnovljivim i održivim izvorima, pogotovo u slabo pošumljenim

zemljama.

Cilj ovog istraživanja je analiza kemijske stabilnosti otisaka na vodu, alkohol i

lužinu u ovisnosti o udjelu vlakanaca konoplje u tiskovnoj podlozi. Ispitivanja su

provedena s tri vrste papira različitih udjela vlakanaca konoplje. Kvaliteta

otisaka nakon ispitivanja kemijske stabilnosti definirana je Euklidovom razlikom

obojenja (ΔE*), odnosno promjenama spektrofotometrijskih vrijednosti, L*a*b*.

Abstract (english)

Industrial grown hemp (Cannabis sativa L.) is an annual plant of the family of

mulberry trees (Moraceae) from which we can produce a large number of

products, both in the textile and food as well as in the paper industry. As a raw

material for the production of paper, hemp has been used since the beginning

of the paper. For exploitation hemp is ready in a short time of cultivation. i.e.,

after about 120 days, in contrast to wood whose period from cultivation to

exploitation is counting in years. Increasing exploitation of forests and their

extinction are increasing the using of fibers from annual plants, as well as the

need for renewable and sustainable sources, especially in the countries poor

with forests.

The aim of this study is to analyze the chemical stability of prints to water,

alcohol and lye in relation to the percentage of hemp fibers in the printing

substrate. Tests were made on the three types of paper with different

percentages of hemp fiber. After testing chemical stability, the quality of the

prints are defined by the Euclidean coloring differences (ΔE*) and changes in

spectrophotometric values, L* a* b*.

• Keywords: vlakna; konoplja; celuloza; papir; kemijska stabilnost
• Keywords (english): fibers; hemp; cellulose; paper; chemical stability
• Language: croatian
• URN:NBN: urn:nbn:hr:216:783583
• Study programme: Title: Printing technology, course Technical - technological; Course: Graphic technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka grafičke tehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka grafičke tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-04-16 17:31:23