Synthesis ofp-[1-(p-Hydroxyphenyl)-1-(p-Methoxyphenyl)Ethyl]Phenol (HMEP)
0.2 mol of phenol was mixed with the solution containing 100 mL of acetic acid in 200 mL of concentrated hydrochloric acid in 500 mL five necked round bottom flask fitted with anoil bath, thermometer, mechanical stirrer, reflux condenser. The contents of the flask was stirred for a period of 15 min, the solution was heated to 65oC, 0.1 mol ofp-methoxyacetophenone was introduced into a dropwise to the solution for about 6 h. Then the mixture was transferred into 30 mL boiling water containing 2N KOH. The solid product was filtered and acidified with dilute sulphuric acid, then washed with distilled water and dried at 65oC for 12 h. Recrystallization from benzene-aetonewater system gavecrystals. Yield: 82-92 %.
Synthesis of 1-(p-Methoxyphenyl)-1, 1-Bis{p-[2Oxiranyl)Methoxy]Phenyl}Ethane (MOPE)
A 500 mL five necked round bottom flask fitted with a heating mantle, mechanical stirrer, thermometer and reflux condenser, 0.5 mol of MOPE, 1.1 mol of epichlorohydrin and 300 mL of isopropanol were added to the flask. The mixture was heated to 60oC for 15 min. Subsequently 1.25 mol of sodium hydroxide in 500 mL water was …show more content…
The effect of photoinitiator concentration on rate of polymerization is given in Figure 18. The Rpis depends on the percent double bond conversion. The monofunctional diluent, DEGEEA is higher Rp than TEGDA and TMPTA this may be due to higher percent double conversion of DEGEEAthan that of TEGDA andTMPTA.[37-40]
0.2 mol of phenol was mixed with the solution containing 100 mL of acetic acid in 200 mL of concentrated hydrochloric acid in 500 mL five necked round bottom flask fitted with anoil bath, thermometer, mechanical stirrer, reflux condenser. The contents of the flask was stirred for a period of 15 min, the solution was heated to 65oC, 0.1 mol ofp-methoxyacetophenone was introduced into a dropwise to the solution for about 6 h. Then the mixture was transferred into 30 mL boiling water containing 2N KOH. The solid product was filtered and acidified with dilute sulphuric acid, then washed with distilled water and dried at 65oC for 12 h. Recrystallization from benzene-aetonewater system gavecrystals. Yield: 82-92 %.
Synthesis of 1-(p-Methoxyphenyl)-1, 1-Bis{p-[2Oxiranyl)Methoxy]Phenyl}Ethane (MOPE)
A 500 mL five necked round bottom flask fitted with a heating mantle, mechanical stirrer, thermometer and reflux condenser, 0.5 mol of MOPE, 1.1 mol of epichlorohydrin and 300 mL of isopropanol were added to the flask. The mixture was heated to 60oC for 15 min. Subsequently 1.25 mol of sodium hydroxide in 500 mL water was …show more content…
The effect of photoinitiator concentration on rate of polymerization is given in Figure 18. The Rpis depends on the percent double bond conversion. The monofunctional diluent, DEGEEA is higher Rp than TEGDA and TMPTA this may be due to higher percent double conversion of DEGEEAthan that of TEGDA andTMPTA.[37-40]