The influence of oxygen on polymerization kinetics in photopolymer films is studied using a fluorescence-based technique developed in this laboratory. Fluorescent N-vinylcarbazole monomer is used to monitor photopolymerization kinetics in the presence and absence of oxygen. Effects of oxygen at pressures up to 3 atm (3 x lo5 Pa) on photopolymerization in various inert polymer matrices are studied. A reduction in the photopolymerization rate without induction period is observed in the presence of oxygen. A detailed computer analysis of the kinetics is presented. The unusual polymer spatial distribution is calculated and attributed to the anisotropy of illumination and the diffusion and reaction of the mobile oxygen and monomer species.
Посилання на статтю:
Oxygen effects on anisotropic photopolymerization in polymer matrices / Vadim V. Krongauz* and E. Richard Schmelzer // Polymer. – 1992. – Vol 33. – P. 1893-1901.