Cited by 110Advanced Polymer Synthesis and CharacterizationPolymer Synthesis and Characterizationbiodegradable polymer synthesis and properties

Free-Radical ring-opening polymerization of cyclic allylic sulfides

Evans, Richard A., Rizzardo, Ezio·1996·Macromolecules

Abstract

A new type of ring-opening monomer has been investigated and found to undergo facile and efficient free-radical polymerization. The monomers are cyclic allylic sulfides with 6-methylene-1,4-dithiepane ( 3 ) and 3-methylene-1,5-dithiacyclooctane ( 4 ) synthesized and investigated as two examples. 6-Methylene-1,4-dithiepane ( 3 ) is a clear oil and 3-methylene-1,5-dithiacyclooctane ( 4 ) has a low, near ambient temperature melting point, and in contrast to many ring-opening monomers, they readily survive exposure to moisture and aqueous acids and bases. These compounds were polymerized in bulk with complete ring opening to give highly insoluble crystalline homopolymers of high molecular weight ( M w ca. 500 000−700 000) with glass transition temperatures of ca. −30 to −50 °C and melting points of ca. 100−130 °C. The homopolymers and their 1:1 copolymer were characterized by FT-IR and high-temperature 1 H and 13 C NMR spectroscopies, high-temperature GPC, and DSC. They displayed volume shrinkages in the range expected of ring-opening monomers (4.5−8.5%) of their molecular weights in spite of the crystallinity present in the final polymers.

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Crossref · 10.1021/ma960573p

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  • Heterocyclic monomers with nitrogen or sulfur heteroatoms have been shown to undergo radical ROP.

    “Heterocyclic monomers with nitrogen or sulfur heteroatoms have also been shown to undergo radical ROP (see Figure 7).”

    From Ring-Opening Polymerization—An Introductory Review (2013) · cites this paper as [18]

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Authors
Evans, R. A., & Rizzardo, E.
Affiliations
Commonwealth Scientific and Industrial Research Organisation (AU)
Venue
Macromolecules
Published
1996-01-01
Volume
29
Issue
22
Pages
6983-6989
ISSN
  • 0024-9297 (ISSN-L)
  • 1520-5835
OpenAlex
W2062765845
Cited by
110
References
15
Citations by year
2026: 8 · 2025: 9 · 2024: 7 · 2023: 11 · 2022: 6 · 2021: 2 · 2020: 3 · 2019: 4 · 2018: 4 · 2017: 1 · 2016: 4 · 2015: 5 · 2014: 3 · 2013: 4 · 2012: 3
FWCI
0.60
Type
journal article
Language
en
Open access
closed
Locations
Macromolecules (publishedVersion)
Topics
  • Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer Synthesis and Characterization
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
Keywords
copolymers, volume shrinkage, glass transition temperature, polymer crystallinity

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