Molecular dynamics and free volume in organic glass-formers: A series of oligomer and polymer 1,4-poly(isoprene)s
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- 作者：J. Barto&scaron ; a ; Jozef.Bartos@savba.sk" class="auth_mail ; H. &Scaron ; vajdlenková ; a ; M. Luke&scaron ; ová ; a ; Y. Yub ; R. Krause-Rehbergb
- 刊名：Chemical Physics Letters
- 出版年：20 May 2014
- 年：2014
- 卷：602
- 期：Complete
- 页码：28-33
- 全文大小：558 K
文摘
- •
Spin probe TEMPO dynamics studies in a series of 1,4 poly(isoprene)s measured by ESR.
- •
ortho-positronium (o-Ps) annihilation studies performed by PALS.
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Several coincidences between the characteristic ESR and PALS temperatures.
- •
Nearly constant o-Ps lifetimes at T 50G and
transition independently of chain length.- •
Local free volume as a controlling factor of T 50G and
transitions.