Naslov
The reflectance spectrum of recycled papers exposed to accelerate ageing according to used flotation deinking method

Autori
Dujmušić, Dorela ; Džimbeg-Malčić, Vesna ; Barbarić-Mikočević, Željka ; Plazonić, Ivana ; Bates, Irena

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 19th International conference on printing, design and graphic communications Blaž Baromić / Mikota, Miroslav - Zagreb : Hrvatsko društvo grafičara, 2015, 71-80

Skup
19th international conference on printing, design and graphic communications Blaž Baromić

Mjesto i datum
Senj, Hrvatska, 16.09.2015. - 19.09.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
accelerated ageing; process conditions of flotation deinking; recycled paper; reflectance value

Sažetak
This study observes optical stability of newspaper laboratory handsheets after exposing to accelerated ageing. By chemical deinking flotation method under different experimental conditions, Croatian daily newspaper was recycled. Accelerated ageing of prepared handsheets were done in an oven at 60°C, while exposure time was varied. Optical stability of all handsheets were analysed through changes in reflectance spectrum and compared to those made with frequently used deinking method INGEDE 11. Regardless the process conditions during the flotation deinking, it is a notable increase of the reflection values in the visible part of the spectrum after handsheets ageing. The highest increase of reflectance values is obtained on handsheet which was prepared from newspaper suspension disintegrated at room temperature during recycling process.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

POVEZANOST RADA