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On the Mechanism of the Ring-Expansion Polymerization of Thiiranes by Jan-Hendrik Schuetz; Philipp Vana is a Materials Science article available to read on EtoBox.
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## Abstract Ring polymers are synthesized using a cyclic bifunctional thioester as initiator for REP of thiiranes. PMT yields satisfactory results, whereas polymerization with MT appears to develop dead polymeric material as by‐product and TBMT gives only negligible conversion rates. The process produces high yields and high conversion rates. The corresponding molecular weight distributions show increasing broadening and multimodal character with increasing reaction time due to thermodynamically controlled ring‐merging reactions between macrocycles. The polymerization rate of PMT obeys a pseudo first‐order kinetics with an activation energy of 38.8 kJ mol^−1^. ^1^H NMR, ESI‐MS, and glass transition temperatures independent of the molecular weight demonstrate the presence of cyclic polymer. magnified image
Who reads On the Mechanism of the Ring-Expansion Polymerization of Thiiranes?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Jan-Hendrik Schuetz; Philipp Vana
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1022-1352)
- Published
- 2011
- Language
- EN
- Field
- Materials Science (Physical Sciences)