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Thermal effects on the structure and relaxation properties of poly(monocyclopentyl itaconate)
Author(s) -
Calleja Ricardo Díaz,
Sanchis MariaJesus,
Gargallo Ligia,
Radíc Deodato
Publication year - 1995
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1995.021961129
Subject(s) - relaxation (psychology) , glass transition , viscoelasticity , dielectric , thermal , polymer chemistry , materials science , thermodynamics , chemistry , cole–cole equation , stress relaxation , polymer , chemical physics , composite material , physics , psychology , social psychology , creep , optoelectronics
The effect of thermal treatment and subsequent chemical structural modifications on the viscoelastic and dielectric properties of PMCPI (poly(monocyclopentyl itaconate)) was studied. The low temperature relaxation (γ‐relaxation) is unaffected by the thermal history or chemical modifications. The intermediate relaxation (β‐relaxation) is shifted by about 40°C to higher temperature after thermal treatment. The α‐relaxation (related to the glass transition temperature T g ) suffers more striking changes when moving to higher temperatures.