@Article{JRM.2014.634138,
AUTHOR = {A. Paberza, L. Stiebra, U. Cabulis},
TITLE = {Photodegradation of Polyurethane Foam Obtained  from Renewable Resource–Pulp Production Byproducts},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {3},
YEAR = {2015},
NUMBER = {1},
PAGES = {19--27},
URL = {http://www.techscience.com/jrm/v3n1/49614},
ISSN = {2164-6341},
ABSTRACT = {Rigid polyurethane foams were obtained from pulp production byproducts. Three different polyols 
were used—tall oil polyol, lignopolyol and commercially available polyol for comparison. The obtained 
rigid polyurethane foams underwent photodegradation at 60°C temperature and at 0.89 W/m<sup>2</sup> intensity 
of UV light radiation up to 1000 h. Changes in chemical structure were observed by Fourier Transform 
Infrared Spectroscopy and Scanning Electron Microscopy was used to study changes in cell morphology. 
Spectrophotometery was used to determine yellowing of the foams. Results showed that the thickness of 
degraded layer for rigid polyurethane foams obtained from pulp production byproducts was ~25% less than 
for foams from commercially available polyol. Overall results suggest that rigid polyurethane foams from 
lignopolyol show better performance against photodegradation.},
DOI = {10.7569/JRM.2014.634138}
}