Specific heat relaxation during macromolecule growth
Anno: 1996
Autori: Ferrari C., Salvetti G., Tombari E., Johari G.P.
Affiliazione autori: Istituto di Fisica Atomica e Molecolare del Consiglio Nazionale delle Ricerche, Via del Giardino 7, Pisa, 56100, Italy; Department of Materials Science and Engineering, McMaster University, Hamilton, ON, L8S-4L7, Canada
Abstract: When dissimilar molecules in a liquid mixture react isothermally to form covalent bonds and linear chain macromolecules grow until the liquid vitrifies, the complex C-p of the mixture measured for a fixed frequency decreases. The real component of this C-p measured as a function of the number of covalent bonds formed, or macroscopic reaction time, shows a dispersionlike decrease and the imaginary component a peak. From these data, the evolution of structural relaxation time during the growth of the macromolecules has been determined and its formalism given.
Giornale/Rivista: PHYSICAL REVIEW E
Volume: 54 (2) Da Pagina: R1058 A: R1061
Parole chiavi: DIELECTRIC-SPECTROSCOPYDOI: 10.1103/PhysRevE.54.R1058Citazioni: 45dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-04-27Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui
