File Name : appendix fig. 1a.tif

Caption : appendix fig. 1 the main reaction processes to prepare pu based on (a) polyester polyol and (b) polyether polyol. the process involved in the synthesis of the polyester and the polyether with the nco-terminated pu prepolymer and then c=c terminated pu. the mixture of polyurethane (polyester:polyether=mole ratios 8:2, 6:4, 4:6, and 2:8). dbtdl, dibutyltin dilaurate; hema, 2-hydroxyethyl methacrylate; and ipdi, isophorone diisocyanate.

File Name : appendix fig.1b.tif

Caption : appendix fig. 1 the main reaction processes to prepare pu based on (a) polyester polyol and (b) polyether polyol. the process involved in the synthesis of the polyester and the polyether with the nco-terminated pu prepolymer and then c=c terminated pu. the mixture of polyurethane (polyester:polyether=mole ratios 8:2, 6:4, 4:6, and 2:8). dbtdl, dibutyltin dilaurate; hema, 2-hydroxyethyl methacrylate; and ipdi, isophorone diisocyanate.