STUDIES ON THE RESIN FINISH WITH ACRYLIC ACID MONOMER

In the previous paper, we observed that some physical properties of spun rayon fabric had improved by intra-fiber polymerization of monomeric CH2CHCOOH. Here, in order to fined favorable conditions to polymerize monomeric CH2CHCOOH in open glass vessel with good yield of polymer in circulating hot air oven, the following tests were made.1. Effects of concentrations of monomeric CH2CHCOOH (0.76_??_2.68mol/l), catalytic H2O2 (1.47_??_36.9×10-2mol/l), and polymerizing temperature (80_??_120°C) on the yield of polymeric CH2CHCOOH.2. How many parts of monomeric CH2CHCOOH is evaporated and polymrized during the heating.3. How many parts of H2O2 is decomposed during the heating.The results obtained are:1. Considering that CH2CHCOOH are polymerized intra-fiber with 0.76_??_2.68mol/l concentrations, at least 7.36×10-2mol/l of H2O2 and 60minutes heating at 110°C are favourable.2. There are considerable differences in polymer yields between polymerizing at temperature 80°C_??_110°C, but only small difference is noted at 100_??_120°C.3. Excess H2O2 concentration over 7.36×10-2mol/l is only less effectiveon polymer yield.4. Polymelizing duration is almost not affected by monomer conentration.5. The thinner the solution the larger is the evaporating loss.6. The decomposition of H2O2 is not so large up to 30minutes, but rapid decomposition takes place thereafter and the thinner the monomer solution the quicker decomposition takes place.