Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2004
Volume 7
Issue 1
Topic:
Wood Technology
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Kasprzyk H. , Wich│acz K. , Borysiak S. 2004. THE EFFECT OF GAMMA RADIATION ON THE SUPRAMOLECULAR STRUCTURE OF PINE WOOD CELLULOSE IN SITU REVEALED BY X-RAY DIFFRACTION, EJPAU 7(1), #06.
Available Online: http://www.ejpau.media.pl/volume7/issue1/wood/abs-06.html

THE EFFECT OF GAMMA RADIATION ON THE SUPRAMOLECULAR STRUCTURE OF PINE WOOD CELLULOSE IN SITU REVEALED BY X-RAY DIFFRACTION

Henryk Kasprzyk, Kinga Wich│acz, S│awomir Borysiak

 

ABSTRACT



This study investigated the changes in the supramolecular structure of pine wood cellulose in situ treated by various of doses gamma radiation (from 20 kGy to 9000 kGy). From the dose of 120 kGy the degree of crystallinity (xc) of wood cellulose slightly decreased, while at the dose of 500-4500 kGy dropped rapidly. At 9000 kGy occures a total degradation of cellulose, both crystalline and amorphous. Along with the increase in the gamma radiation of wood, both the crystallinity degree and the average size of the crystallites of cellulose decrease. The curve of changes in the crystallinity degree was similar to that of the changes in the average size of the crystallites of cellulose.

Key words: irradiated pine wood, cellulose crystallinity, gamma radiation, X-ray diffraction..