پديد آورندگان :
Alosmanov Rasim M نويسنده , Nurbasr Macid نويسنده , Kabasaka Sermet نويسنده , Azizov Abdulsaid A نويسنده , Ahmedov Vagif M نويسنده , Asadov Ziyafettin H نويسنده
چكيده لاتين :
There have been reports about the studies of simultaneous chlorination and carboxylation
of polyethylene affected by gaseous chlorine and maleic anhydride (MA) in
carbon tetrachloride solution within the range 0190-11 O°C. In this study, photchemical
chlorination of polyisobutylene (PIB) in the presence of MA, and, in particular, the
kinetics of this process were investigated. Photochemical chlorocarboxylation of polyisobutylene
was carried out in the mixture of carbon tetrachloride and chloroform. The
order of the reaction with regard to reactant concentrations and the value of the reaction
rate constant were found. By the method of quantitative description of substitution sites
on the polymer chain, the ratio of the rate constants of the chlorination and carboxylation
reactions was calculated. The effect 01 the neighbouring unit, i.e., a decrease in the chlorination
rate under the accepting effect of maleic anhydride (scavenging effect) was
observed. The time of the reaction corresponding to the maximum value of the scavenging
effect was established.
