DOI: 10.1002/macp.1994.021950803. Synthesis and properties of amphiphilic “dumbbell”‐shaped grafted block copolymers, 1. Anionic synthesis via a polyfunctional initiator

Synthesis and properties of amphiphilic “dumbbell”‐shaped grafted block copolymers, 1. Anionic synthesis via a polyfunctional initiator

10.1002/macp.1994.021950803

Crossref journal-article

Wiley

Macromolecular Chemistry and Physics (311)

Abstract

AbstractTwo poly(ethylene oxide) stars linked by a long polystyrene chain represent a novel amphiphilic architecture (dumbbell), which is available by anionic grafting of ethylene oxide from a hydroxylated polybutadiene‐block‐polystyrene‐block‐polybutadiene triblock copolymer. The short butadiene end‐blocks (DPB = 36) of a BSB triblock copolymer with a long styrene middle block (DPS = 650) was first modified by hydroboration and oxidation. A multifunctional alkoxide initiator is thus prepared by titration of the hydroxyl groups of the “polybutadiene” end‐block with cumylpotassium. Gelation and precipitation of the polyfunctional initiator in THF could be avoided by complexing the cation (K+) with a suitable cryptand (Kryptofix[2.2.2]TM). This multifunctional macroinitiator was used to polymerize ethylene oxide. Dumbbell‐shaped molecules with various number and length of PEO branches were synthesized. Some first results about their solution properties are presented and discussed based on viscosity and light scattering measurements.

Bibliography

Bayer, U., & Stadler, R. (1994). Synthesis and properties of amphiphilic âdumbbellââshaped grafted block copolymers, 1. Anionic synthesis via a polyfunctional initiator. Macromolecular Chemistry and Physics, 195(8), 2709â2722. Portico.

Authors 2

Uwe Bayer (first)
Reimund Stadler (additional)

References 28 Referenced 47

{'key': 'e_1_2_1_1_2', 'volume-title': 'Surfaces, interfaces, and colloids: principles and applications', 'author': 'Myers D.', 'year': '1990'} / Surfaces, interfaces, and colloids: principles and applications by Myers D. (1990)
{'key': 'e_1_2_1_2_2', 'first-page': '324', 'volume-title': 'Block Copolymers” in “Encyclopedia of Polymer Science and Engineering', 'author': 'Riess G.', 'year': '1985'} / Block Copolymers” in “Encyclopedia of Polymer Science and Engineering by Riess G. (1985)
10.1016/0001-8686(76)80009-7
{'key': 'e_1_2_1_4_2', 'first-page': '39', 'volume-title': 'Colloidal properties of block copolymers” in “Developments in block copolymers‐1', 'author': 'Price C.', 'year': '1982'} / Colloidal properties of block copolymers” in “Developments in block copolymers‐1 by Price C. (1982)
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{'key': 'e_1_2_1_21_2', 'volume-title': 'Carbanions, living polymers and electron transfer processes', 'author': 'Szwarc M.', 'year': '1968'} / Carbanions, living polymers and electron transfer processes by Szwarc M. (1968)
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{'key': 'e_1_2_1_24_2', 'first-page': '1473', 'volume': '8', 'author': 'Brody H.', 'year': '1958', 'journal-title': 'Chem. Ind. (London)'} / Chem. Ind. (London) by Brody H. (1958)
{'key': 'e_1_2_1_25_2', 'first-page': '467', 'volume-title': 'Anionic ring‐opening polymerization: epoxides and episulfides” in “Comprehensive Polymer Science', 'author': 'Boileau S.', 'year': '1989'} / Anionic ring‐opening polymerization: epoxides and episulfides” in “Comprehensive Polymer Science by Boileau S. (1989)
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Dates

Type	When
Created	22 years, 4 months ago (April 17, 2003, 7:04 a.m.)
Deposited	1 year, 10 months ago (Oct. 23, 2023, 7:40 p.m.)
Indexed	4 months ago (May 1, 2025, 4:26 a.m.)
Issued	31 years, 1 month ago (Aug. 1, 1994)
Published	31 years, 1 month ago (Aug. 1, 1994)
Published Online	22 years, 5 months ago (March 12, 2003)
Published Print	31 years, 1 month ago (Aug. 1, 1994)

Funders 0

None

BibTeX

@article{Bayer_1994, title={Synthesis and properties of amphiphilic “dumbbell”‐shaped grafted block copolymers, 1. Anionic synthesis via a polyfunctional initiator}, volume={195}, ISSN={1521-3935}, url={http://dx.doi.org/10.1002/macp.1994.021950803}, DOI={10.1002/macp.1994.021950803}, number={8}, journal={Macromolecular Chemistry and Physics}, publisher={Wiley}, author={Bayer, Uwe and Stadler, Reimund}, year={1994}, month=aug, pages={2709–2722} }

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