PREFERENTIAL MONOMER SORPTION (BOOTSTRAP EFFECT) AND THE PRECISION OFDETERMINING THE EFFECTIVE REACTIVITY RATIOS

Authors
SMIRNOVA LA TURSHATOV AA PASTUKHOV MO SEMCHIKOV YD
Citation
La. Smirnova et al., PREFERENTIAL MONOMER SORPTION (BOOTSTRAP EFFECT) AND THE PRECISION OFDETERMINING THE EFFECTIVE REACTIVITY RATIOS, Vysokomolekularnye soedinenia. Seria A, 38(10), 1996, pp. 1653-1655
Citations number
12
Categorie Soggetti
Polymer Sciences
Journal title
Vysokomolekularnye soedinenia. Seria A → ACNP
ISSN journal
05075475
Volume
38
Issue
10
Year of publication
1996
Pages
1653 - 1655
Database
ISI
SICI code
0507-5475(1996)38:10<1653:PMS(EA>2.0.ZU;2-I
Abstract
Experimental data on the composition of styrene-butyl methacrylate cop olymers synthesized at 30 and 70 degrees C are represented in the coor dinates of Fineman-Ross and Kelen-Tddos equations. The curves deviate. from linearity; the errors in determining r(1) and r(2) are significa ntly higher at 30 degrees C. This is explained by preferential monomer sorption (bootstrap effect) under the experimental conditions employe d in this study. It is concluded that these deviations originate from the fact that the effective relative monomer activities are a function of monomer feed composition.