الفهرس 
aim of the workOnly 14 pages are availabe for public view
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Abstract
Polyurethanes are any type of polymer containing a urethane linkage. polyurethanes can exist as both rigid and flexible forms. also, polyurethane can exist as coating, and adhesive material.
in this study, partial replacement of polyol by renewable of polyol by renewable liquefied lignocellulosic wastes polyols was carried out in preparing foamed polyurethane (FPU).