Počet záznamov: 1
Effect of the thermal ageing of selected characteristics of recycled office paper
SYS 0089330 LBL 00000naa^^22^^^^^^^^450 005 20190401133924.6 017 70
$a 10.17423/afx.2017.59.1.06 $2 DOI 100 $a 20170407d m y0sloc0103 ba 101 0-
$a eng 102 $a SK 200 1-
$a Effect of the thermal ageing of selected characteristics of recycled office paper $f Jarmila Geffertová, Anton Geffert, Eva Výbohová 215 $c obr. 320 $a Lit. 330 $a The work was focused on monitoring of changes of selected characteristics of recycled office paper occurring during the modelled thermal ageing. The effect of modelled thermal ageing was manifested mainly by the change of optical characteristics when brightness of recycled paper surface decreased by 40%. The coordinate values L*, a* and b* of the color space moved into the black, red and yellow region of the spectrum in achieving of total color differences E* 14.0 during modelled ageing. Thermal ageing due to hornification and shrinkage of fibers significantly affected the value of air permeability (increasing by 31.5%), the value of swelling of paper (decreasing by 37%), the value of tear index (decreasing by 26%), the value of total crystallinity index (decreasing by 26%) and the value of oxidation index (increasing by 24% ). Modelled thermal ageing slightly reduce the pH values of the surface of the paper (by 5.2%), the values of breaking length (by 5.3%) and the values of intensity of the hydrogen bonds (by 2.6%). The biggest changes of monitored characteristics were observed after the first 6-hour interval of modelled thermal ageing. 463 -1
$1 001 sldk_un_cat*0089217 $1 011 $a 1336-3824 $1 200 1 $a Acta Facultatis Xylologiae Zvolen $e vedecký časopis Drevárskej fakulty $v Roč. 59, č. 1 (2017), s. 59-73 $1 210 $a Zvolen $c Technická univerzita vo Zvolene $d 2017 610 1-
$9 sldk_un_auth*h016547 $a recyklovaný papier $X recycled paper 610 1-
$9 sldk_un_auth*0045279 $a modelovanie tepelného starnutia $X modelled thermal ageing 610 1-
$9 sldk_un_auth*0036121 $a jasová reverzibilita $X brightness reversion 610 1-
$9 sldk_un_auth*0013037 $a tržná dĺžka $X breaking length 610 1-
$9 sldk_un_auth*0013038 $a index dotrhávania $X tear index 610 1-
$9 sldk_un_auth*0031002 $a vzduchová priepustnosť $X air permeability 610 1-
$9 sldk_un_auth*h013113 $a napúčanie $X swelling 610 1-
$9 sldk_un_auth*h017872 $a kryštalinita celulózy $X crystallinity of cellulose 700 -1
$3 sldk_un_auth*p0039105 $a Geffertová $b Jarmila $f 1956- $p TUZDFCHTD $4 070 $T Katedra chémie a chemických technológií 701 -1
$3 sldk_un_auth*p0016647 $a Geffert $b Anton $f 1955- $p TUZDFCHTD $4 070 $T Katedra chémie a chemických technológií 701 -1
$3 sldk_un_auth*p0046221 $a Výbohová $b Eva $f 1974- $p TUZDFCHTD $4 070 $T Katedra chémie a chemických technológií 801 -0
$a SK $b ZV001 $c 20170407 $g AACR2 856 4-
$u https://df.tuzvo.sk/sites/default/files/06-01-17_3_0_0_1_1_0_0_0_0_0_0_0_0.pdf
Počet záznamov: 1