Surface Chemical Modification for UV Stability

Wood Modification Chemical, Thermal and Other Processes C. Hill 2006 John Wiley Sons, Ltd 

It has been noted that the stabilization of wood due to reaction with phenolic OH groups was not considered to be an important mechanism, in view of the observation that the modification of wood with ethylene oxide or butyl isocyanate did not result in an 

Eeist and Rowell (1982) modified wood with butylene oxide, or butyl isocyanate, finding that neither modification provided protection when samples were exposed to UV irradiation alternating with water spray. However, protection was afforded when samples were exposed to UV only. 

Hill etal. (2001) modified wood surfaces with methacrylic anhydride and grafted the activated surface with styrene in order to see if this would improve the UV stability of the modified substrate. There was no evidence to suggest that UV stability was improved either by chemical modification or by modification plus grafting. 

Etherification to produce cyanoethyolated, benzylated or allylated wood surfaces does not result in an improvement in UV resistance, but the latter two treatments have been found to improve the performance of clear coatings on the modified substrate (Kiguchi, 1990b). Kalnins (1984) methylated wood by pre-treating with concentrated aqueous 

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