The emergence of cooperative dynamics in polymers as an effect of conformational restrictions: The case of crystallization and an example on heterogeneous confinement

Thermochimica Acta

Volumn 522, Issue 1-2, 2011, Pages 135-143

  Calandra, Pietro ^a   Pieruccini, Marco ^a   Sturniolo, Simone ^b  

^a CNR   (Italy)

^b UNIVERSITY OF PAVIA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

ADAM-GIBBS THEORY; CONFORMATIONAL RELAXATION; COOPERATIVE DYNAMICS; COOPERATIVITY; DYNAMIC GLASS TRANSITION; GLASS FORMER; LOW TEMPERATURES; MECHANICAL MODEL; NANOPOROUS GLASS; PHYSICAL ASPECTS; SEGMENTAL DYNAMICS;

CRYSTALLIZATION; DIELECTRIC RELAXATION; DYNAMICS; ETHYLENE; GLASS; POLYETHYLENE TEREPHTHALATES; POLYMERS;

GLASS TRANSITION;

EID: 79960944855     PISSN: 00406031     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tca.2011.03.004     Document Type: Article

References (28)

1. G. Adam, and J.H. Gibbs On the temperature dependence of cooperative relaxation properties in glass-forming liquids J. Chem. Phys. 43 1965 139 146
2. E. Donth, The Glass Transition: Relaxation Dynamics in Liquids and Disordered Materials, Springer Series in Material Sciences, vol. 48, Berlin, 2001.
3. E. Donth Characteristic length of the glass transition J. Polym. Sci. Part B: Polymer Phys. 34 1996 2881 2892 (Pubitemid 126556542)
4. M. Pieruccini, and T.A. Ezquerra Segmental relaxation in semicrystalline polymers: a mean-field model for the distribution of relaxation times in confined regimes Eur. Phys. J. E 29 2009 163 171
5. M. Soccio, A. Nogales, N. Lotti, A. Munari, and T.A. Ezquerra The β relaxation as a probe to follow real-time polymer crystallization in model aliphatic polyesters Polymer 48 2007 4742 4750 (Pubitemid 47079054)
6. C. Alvarez, I. Šics, A. Nogales, Z. Denchev, S.S. Funari, and T.A. Ezquerra Structure-dynamics relationship in crystallizing poly(ethylene terephthalate) as revealed by time-resolved X-ray and dielectric methods Polymer 45 2004 3953 3959 (Pubitemid 38595173)
7. This topic has been included to comply the encouragement of one of the referees. We stress, however, that the results of our analysis must not be considered conclusive, and that their presentation is only aimed at offering a different point of view with respect to the current ones, albeit for just the special case of PDMS.
8. A. Schönhals, H. Goering, Ch. Schick, B. Frick, and R. Zorn Polymers in nanoconfinement: What can be learned from relaxation and scattering experiments? J. Non-Cryst. Solids 351 2005 2668 2677 (Pubitemid 41258078)
9. A. Schönhals, H. Goering, Ch. Schick, B. Frick, and R. Zorn Glassy dynamics of polymers confined to nanoporous glasses revealed by relaxational and scattering experiments Eur. Phys. J. E 12 2003 173 178
10. M. Arndt, R. Stannarius, H. Groothues, E. Hempel, and F. Kremer Phys. Rev. Lett. 79 1997 2077 2080
11. BT in the integrand of Eq. 13 has to be multiplied by -1, while the imaginary unit has to be inserted as a multiplying factor in the argument of the exponential in Eq. 14]
12. A. Linares, A. Nogales, A. Sanz, T.A. Ezquerra, and M. Pieruccini Restricted dynamics in oriented semicrystalline polymers: poly(vinilydene fluoride) Phys. Rev. E 82 2010 031802 (1-11)
13. P.G. Debenedetti Metastable Liquids: Concepts and Principles 1996 Princeton University Press Princeton, NJ
14. P.G. Debenedetti, and F.H. Stillinger Supercooled liquids and the glass transition Nature 410 2001 259 267 (Pubitemid 32218700)
15. J.C. Dyre, T. Hechsher, and K. Niss A brief critique of the Adam-Gibbs entropy model J. Non-Cryst. Solids 355 2009 627 629
16. H. Sillescu, R. Böhmer, G. Diezemann, and G. Hinze Heterogeneity at the glass transition: what do we know? J. Non-Cryst. Solids 307-310 2002 16 23 (Pubitemid 34866993)
17. M. Pieruccini, T.A. Ezquerra, and M. Lanza Phenomenological model for the confined dynamics in semicrystalline polymers: the multiple α relaxation in cold-crystallized poly(ethylene terephthalate) J. Chem. Phys. 127 2007 104903 (1-8)
18. G. Dlubek, E.M. Hassam, R. Krause-Rehberg, and J. Pionteck Free volume of an epoxy resin and its relation to structural relaxation: evidence from positron lifetime and pressure-volume-temperature experiments Phys. Rev. E 73 2006 031803 (1-14)
19. A. Saiter, L. Delbreilh, H. Couderc, K. Arabeche, A. Schönhals, and J.-M. Saiter Temperature dependence of the characteristic length scale for glassy dynamics: combination of dielectric and specific heat spectroscopy Phys. Rev. E 81 2010 041805 (1-8)
20. A. Flores, F.J. Baltá Calleja, G. Di Marco, S. Sturniolo, M. Pieruccini, Recrystallization processes in cold-crystallized poly(ethylene terephthalate): the interplay between structure evolution and conformatonal relaxation, unpublished results.
21. M. Beiner, and H. Huth Nanophase separation and hindered glass transition in side-chain polymers Nat. Mater. 2 2003 595 599
22. M. Pieruccini, A. Flores, U. Nöchel, G. Di Marco, N. Stribeck, and F.J. Baltá-Calleja The role of the amorphous phase in the recrystallization process of cold-crystallized poly(ethylene terephthalate) Eur. Phys. J. E 27 2008 365 373
23. c = 160 °C), a decrease in linear crystallinity is observed instead, as shown and discussed in Ref. [22].
24. B. Frick, C. Alba-Simionesco, G. Dosseh, C. Le Quellec, A.J. Moreno, J. Colmenero, A. Schönhals, R. Zorn, K. Chrissopoulou, S.H. Anastasiadis, and K. Dalnoki-Veress Inelastic neutron scattering for investigating the dynamics of confined glass-forming liquids J. Non-Cryst. Solids 351 2005 2657 2667 (Pubitemid 41252512)
25. A. Schönhals, H. Goering, Ch. Schick, B. Frick, and R. Zorn Glass transition of polymers confined to nanoporous glasses Coll. Polym. Sci. 282 2004 882 891 (Pubitemid 38898633)
26. S. Pankaj, and M. Beiner Confined dynamics and crystallization in self-assembled alkyl nanodomains J. Phys. Chem. B 114 2010 15459 15465
27. G. Strobl Crystallization and melting of bulk polymers: new observations, conclusions and a thermodynamic scheme Prog. Polym. Sci. 31 2006 398 442
28. G. Strobl Laws controlling crystallization and melting in bulk polymers Revs. Mod. Phys. 81 2009 1287 1300