Comparative study of differently treated (cooked and bleached) industrial grass and

straw fibres, respectively, by Scanning Electron Microscopy and Atomic Force

Microscopy

István LELE,a Mariann LELE,a András VÍG,b Zsolt JANOWSZKYc and János JANOWSZKYc

aUniversity of West Hungary, Faculty of Wood Sciences, Paper Research Institute, 9400 Sopron, Bajcsy-Zs. u. 4, Hungary

bBudapest University of Technology and Economics, Department of Organic Chemistry and Technology, 1521 Budapest, Hungary

cGreenline Hungary Ltd, 5540 Szarvas, Hungary

Scanning Electron Microscopy (SEM) measurements

Straw fibres

without bleaching

with bleaching

Industrial grass fibres

without bleaching

with bleaching

According to the SEM pictures surface roughness of both fibres has increased after bleaching.

SEM pictures of straw fibres without and with bleaching, respectively

Atomic Force Microscopy (AFM) measurements

Straw fibres

without bleaching

with bleaching

Industrial grass fibres

without bleaching

with bleaching

AFM pictures of straw fibres without and with bleaching, respectively

Also according to the AFM pictures can be concluded that surface roughness of both fibres has increased after bleaching.

The gained surface characteristics elucidated the differences between the two studied fibres and enabled the optimisation of

fibre–fibre interaction during the sheet making process.

Thank you very much

for your kind attention!