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Durability Of Pine Strandboard Modified With Low Molecular Weight Phenol Formaldehyde, Matthew Daniel Voitier
Durability Of Pine Strandboard Modified With Low Molecular Weight Phenol Formaldehyde, Matthew Daniel Voitier
LSU Master's Theses
A continuing challenge for wood and wood-based composite building materials has been durability--the power of resisting agents or influences which tend to cause changes, decay, or dissolution; lastingness. In the case of wood-based products, this often requires a resistance to biological degradation and moisture related dimensional instability (particularly in particle and flake or strand boards). Borden Chemical Company has developed a new low molecular weight phenol formaldehyde additive, PD-112, to improve durability in composite wood products. This study investigated PD-112’s contribution to durability in oriented strand board (OSB) through laboratory testing of treated southern pine strandboard panels versus untreated control …
Study On The Termiticidal Components Of Juniperus Virginiana, Chamaecyparis Nootkatensis And Chamaecyparis Lawsoniana, Yaojian Liu
Study On The Termiticidal Components Of Juniperus Virginiana, Chamaecyparis Nootkatensis And Chamaecyparis Lawsoniana, Yaojian Liu
LSU Master's Theses
Termites cause serious damage to wood and wood products. In recent years, increasing attention has been paid to extractives from naturally decay resistant trees. In this study, we compared the termiticidal and antifungal effects of extractives from Alaska yellow cedar (AYC), Port-Orford cedar (POC), and Eastern red cedar (ERC). Pentane and Hexane-Acetone extractives from YC and POC, and pentane extractives from ERC were most favorable in terms of termite protection among the extractives we got. Weight loss of strips treated with 5000 ppm pentane extractives from Eastern red cedar, was significantly lower than those treated with solutions of pentane extractive …