𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Solution properties of isoprene-styrene block copolymers

✍ Scribed by J. Prud'homme; J.E.L. Roovers; S. Bywater

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
512 KB
Volume
8
Category
Article
ISSN
0014-3057

No coin nor oath required. For personal study only.

✦ Synopsis

Al~tract--Two series of well characterized styrene-isoprene two-block copolymers have been synthesized, with weight fractions 50 and 75 per cent styrene. Their intrinsic viscosities have been studied in a number of solvents and over a wide range of molecular weights. In general the intrinsic viscosities are close to the weighted average of the corresponding homopolymers of equal molecular weight. There is discussion of the implications of these results with regard to the configuration of block copolymers in solution.

πŸ“œ SIMILAR VOLUMES

Solution properties of block copolymers
Solution properties of block copolymers of poly(isoprene : styrene)β€”II. Thermodynamic parameters from osmotic data
✍ D.N. Cramond; J.R. Urwin πŸ“‚ Article πŸ“… 1969 πŸ› Elsevier Science 🌐 English βš– 379 KB

Osmotic pressure data, obtained from a study of four block copolymers, have been used to calculate second virial coefficients and number average molecular weights. The virial coefficients were determined over a range of temperatures in toluene and cyclohexane. The theta temperatures, entropy of dilu

Solution properties of block copolymers
Solution properties of block copolymers of poly(isoprene : styrene)β€”I. Molecular dimensions by viscosity and light scattering methods
✍ D.N. Cramond; J.R. Urwin πŸ“‚ Article πŸ“… 1969 πŸ› Elsevier Science 🌐 English βš– 515 KB

Viscosity and light scattering data for block copolymers of poly(isoprene : styrene) have been determined in the solvents toluene, cyclohexane and methyl isobutyl ketone. The displacement length parameter < ~:2 > ~/Z ~ reaches a ma\_'dmum in the middle of thecompositionscale. Binary cluster integral