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Zmeny vybraných charakteristík kancelárskeho papiera v priebehu simulovaného starnutia
Názov Zmeny vybraných charakteristík kancelárskeho papiera v priebehu simulovaného starnutia Súbež.n. Changes of chosen characteristics of office paper during the process of simulated ageing Aut.údaje Jarmila Geffertová, Anton Geffert Autor Geffertová Jarmila TUZDFCHTD - Katedra chémie a chemických technológií Spoluautori Geffert Anton TUZDFCHTD - Katedra chémie a chemických technológií Zdroj.dok. Acta Facultatis Xylologiae Zvolen : vedecký časopis Drevárskej fakulty. Roč. 57, č. 1 (2015), s. 53-62. - Zvolen : Technická univerzita vo Zvolene, 2015 Poznámky Lit. Jazyk dok. slovenčina Krajina Slovenská republika Systematika 676 Heslá papier - paper * simulované starnutie - simulated ageing * mechanické vlastnosti - mechanical properties * vzduchová priepustnosť - air permeability * napúčanie - swelling * optické vlastnosti - optical properties Anotácia The aim of the article has been to follow the changes of the chosen characteristics of office paper during the process of simulated ageing. Simulated ageing caused the small increase of paper porosity, which was shown by the increase of air permeability by only 72 mL×min−1. The breaking length values retained their stability of up to 95 %, while the stability of tear index after 24-hour ageing was only 67 %. pH value of paper surface slightly decreased by 0.62 (93 % stability). After 200- second swelling the swelling ability of paper decreased by 15 %, what represented preservation of stability only up to 57.7 %. The brightness value decreased considerably too (by 20.6 % MgO) and shifting in colour space CIE L*a*b* was recorded as well. The differential spectra in monitored time intervals had similar trend with minimum of reflection at 430 nm. The biggest value changes of air permeability, tear index, pH of paper surface, swelling, brightness and reflectance were determined after 6-hour ageing. The values of the mentioned characteristics decreased only slightly in the following time intervals of ageing. Cieľom tohto príspevku je sledovať zmeny vybraných charakteristík kancelárskeho bezdrevného grafického papiera vplyvom simulovaného starnutia. URL https://df.tuzvo.sk/sites/default/files/06-01-15-geffertova-geffert_0.pdf Báza dát xcla - ČLÁNKY Druh dok. RBX - rozpis článkov z periodík Odkazy PERIODIKÁ-Súborný záznam periodika Zväzky 2015: 1-2 
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