SOME KINETICS PARAMETERS FOR THE CATIONIC POLYMERİZATİON OF a- METHYL STYRENE AND STYRENE CATALYZED BY SULFURIC ACID AND PHOSPHOROUS PENTOXIDE

Yıl 1988, Cilt: 34 Sayı: 01.02, 20 - 27, 01.01.1899

Oya Şanlı

https://doi.org/10.1501/Commub_0000000483

Öz

The effect of polymerization time, temperature, monomer concent¬ration on, the rate of polymerization and molecular weight of the poly¬mers prepared from oc-methyl styrene using sulphuric acid catalyst had been previously investigated (Şanlı, Pulat, 1981). It was observed that the molecular weight of the polymers ıncreased as the temperature decreased. On the othcr hand, the rate of polymerization increased to a certain temperature then decreased. Change in the polymerization time did not affect the molecular weight of the polymers obtained. It was also reported that as the monomer and catalyst concentration inc¬reased the rate of polymerization also increased. a-methyl styrene was polymerized using different amounts of water as cocatalyst. As the water concentration was increased the rate of polymerization, and the molecular weight of the polymers were decreased

Anahtar Kelimeler

SOME KINETICS PARAMETERS, METHYL STYRENE, PHOSPHOROUS PENTOXIDE

Kaynakça

• Communications Faculty of Sciences University of Ankara Series B Chemistry and Chemical Engineering