DOI: 10.1002/pol.1974.180121211. Synthesis and solution properties of linear, four‐branched, and six‐branched star polyisoprenes

Synthesis and solution properties of linear, four‐branched, and six‐branched star polyisoprenes

10.1002/pol.1974.180121211

Crossref journal-article

Wiley

Journal of Polymer Science: Polymer Physics Edition (311)

Abstract

AbstractA number of linear, four‐ and six‐branched regular star polyisoprenes were synthesized by anionic polymerization techniques in benzene using lithium as the counterion and polyfunctional silicon chloride compounds as the coupling agents. Light‐scattering measurements in dioxane were performed in order to establish Θ solvent conditions. Determinations of the radius of gyration of the polymers of different structure indicate that g = 〈S2〉0,br/〈S2〉0,lin agree closely with random flight calculations for the ratios. Intrinsic viscosities determined in a Θ solvent establish g′ = [η]br/[η]lin to be 0.773 and 0.625 for the four‐ and six‐branched polyisoprenes, respectively. In a good solvent g′ values are slightly lower. These values are compared with theoretical estimates. Viscosities of 19.29% (w/w) solutions of the polyisoprenes in n‐decane at 25°C are correlated with the intrinsic viscosities of the polymers under Θ conditions.

Bibliography

Hadjichristidis, N., & Roovers, J. E. L. (1974). Synthesis and solution properties of linear, fourâbranched, and sixâbranched star polyisoprenes. Journal of Polymer Science: Polymer Physics Edition, 12(12), 2521â2533. Portico.

Authors 2

N. Hadjichristidis (first)
J. E. L. Roovers (additional)

References 32 Referenced 124

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Dates

Type	When
Created	22 years, 4 months ago (April 16, 2003, 12:03 p.m.)
Deposited	1 year, 9 months ago (Nov. 1, 2023, 9:04 p.m.)
Indexed	2 weeks, 1 day ago (Aug. 7, 2025, 5:08 p.m.)
Issued	50 years, 8 months ago (Dec. 1, 1974)
Published	50 years, 8 months ago (Dec. 1, 1974)
Published Online	22 years, 5 months ago (March 11, 2003)
Published Print	50 years, 8 months ago (Dec. 1, 1974)

Funders 0

None

BibTeX

@article{Hadjichristidis_1974, title={Synthesis and solution properties of linear, four‐branched, and six‐branched star polyisoprenes}, volume={12}, ISSN={1542-9385}, url={http://dx.doi.org/10.1002/pol.1974.180121211}, DOI={10.1002/pol.1974.180121211}, number={12}, journal={Journal of Polymer Science: Polymer Physics Edition}, publisher={Wiley}, author={Hadjichristidis, N. and Roovers, J. E. L.}, year={1974}, month=dec, pages={2521–2533} }

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