Izrada papira iz vlakanaca konoplje

master's thesis

• Author: Karlo Josipović
• Mentor: Branka Lozo (mentor)
• Committee member: Branka Lozo (član povjerenstva)
• Granter: University of Zagreb; Faculty of Graphic Arts; Zagreb
• Defense date and country: 2013-10-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Graphic Technology

Abstract

Jednogodišnje biljke se često koriste za izradu papira, naročito u krajevima bogatima takvom sirovinom, u dijelovima Europe poput Nizozemske, Belgije i sl, ili u azijskim zemljama, poglavito u zemljama Dalekog istoka. Specifičnost sirovine jednogodišnjih biljki jest u morfologiji vlakanaca u odnosu na vlakanca višegodišnjih biljki, zatim u sastavu vlakanaca, odnosno udjelu celuloze, lignina i hemiceluloza, te posebno u proceduri obrade takvih vlakanaca. Naime, razvlaknjivanje kao jedan od prvih postupaka u obradi ovakve sirovine u velike se razlikuje od razvlaknjivanja koje se provodi za višegodišnje biljke, a također se razlikuje i od postupaka koji se primjenjuju prilikom recikliranja papira. Obrada jednogodišnjih biljki uključuje kuhanje pod uvjetima visokog pritiska i temperature uz dodatke. Vlakna koja se dobiju ovakvom obradom mogu poslužiti za izradu papira po konvencionalnim postupcima, ručno ili industrijski, a mogu se koristiti i kao dodaci drugim vrstama vlakanca u određenom omjeru. Izbor ovisi o željenim svojstvima gotovog papira, tj. o njegovoj budućoj namjeni, budući da u velikom broju slučajeva vlakna jednogodišnjih biljki doprinose mehaničkim svojstvima papira kojeg grade.

Abstract (english)

Annual plants are frequently being used for paper production, especially in countries enriched with this raw material, in parts of Europe like The Netherlands, Belgium and others, or in Asia countries, especially in Far East countries. Specificity of this kind of raw material produced form annual plants is in its morphology of fiber compared with fiber produced form perennial plants, in chemical composition of fiber, respectively in share of cellulose, lignin and hemicellulose, and especially in processing procedures these kind of fibers. Disintegration and recycling are different form processes used for perennial plants. Processing of annual plants is based on cocking in high pressure systems. These fibers can be used for paper making, mechanical or handmade, or can be used for mixing with other fibers in a certain proportions. The choice depends on wanted characteristics of finished paper, its future uses, since annual plants are commonly used to enhance mechanical properties of paper.

• Keywords: Jednogodišnje biljke; Konoplja; proizvodnja papira; morfologija vlakanca; kuhanje u kiselom i lužnatom mediju
• Keywords (english): Annual plants; Hemp; paper making; fiber morphology; acid and alcaline cooking
• Language: croatian
• URN:NBN: urn:nbn:hr:216:887766
• 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 09:12:50