Confinement Effects on the Molecular Dynamics of Liquid-Crystalline Polymethacrylates-A Broadband Dielectric Spectroscopy Study

2012 ◽  
Vol 213 (22) ◽  
pp. 2420-2431 ◽  
Author(s):  
Gamal Turky ◽  
Dietmar Wolff ◽  
Andreas Schönhals
Keyword(s):  
Molecular Dynamics ◽  
Dielectric Spectroscopy ◽  
Liquid Crystalline ◽  
Spectroscopy Study ◽  
Confinement Effects ◽  
Broadband Dielectric Spectroscopy

scholarly journals Broadband Dielectric Spectroscopy Study of Biobased Poly(alkylene 2,5-furanoate)s’ Molecular Dynamics

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1355 ◽  
Author(s):  
Michelina Soccio ◽  
Daniel E. Martínez-Tong ◽  
Giulia Guidotti ◽  
Beatriz Robles-Hernández ◽  
Andrea Munari ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Dielectric Spectroscopy ◽  
Relaxation Times ◽  
Barrier Properties ◽  
Polymer Processing ◽  
Industrial Applications ◽  
Structure Property ◽  
Property Relations ◽  
Broadband Dielectric Spectroscopy ◽  
Segmental Relaxation

Poly(2,5-alkylene furanoate)s are bio-based, smart, and innovative polymers that are considered the most promising materials to replace oil-based plastics. These polymers can be synthesized using ecofriendly approaches, starting from renewable sources, and result into final products with properties comparable and even better than those presented by their terephthalic counterparts. In this work, we present the molecular dynamics of four 100% bio-based poly(alkylene 2,5-furanoate)s, using broadband dielectric spectroscopy measurements that covered a wide temperature and frequency range. We unveiled complex local relaxations, characterized by the simultaneous presence of two components, which were dependent on thermal treatment. The segmental relaxation showed relaxation times and strengths depending on the glycolic subunit length, which were furthermore confirmed by high-frequency experiments in the molten region of the polymers. Our results allowed determining structure–property relations that are able to provide further understanding about the excellent barrier properties of poly(alkylene 2,5-furanoate)s. In addition, we provide results of high industrial interest during polymer processing for possible industrial applications of poly(alkylene furanoate)s.

Molecular dynamics of poly(butylene tert-butyl isophthalate) and its copolymers with poly(butylene terephthalate) as revealed by broadband dielectric spectroscopy

Polymer ◽  
2006 ◽  
Vol 47 (20) ◽  
pp. 7078-7084 ◽  
Author(s):  
Aurora Nogales ◽  
Alejandro Sanz ◽  
Tiberio A. Ezquerra ◽  
Robert Quintana ◽  
Sebastian Muñoz-Guerra
Keyword(s):  
Molecular Dynamics ◽  
Dielectric Spectroscopy ◽  
Butylene Terephthalate ◽  
Tert Butyl ◽  
Broadband Dielectric Spectroscopy

scholarly journals Dynamical Properties of Ice and Water: A Broadband Dielectric Spectroscopy Study

Proceedings ◽  
2019 ◽  
Vol 26 (1) ◽  
pp. 8
Author(s):  
Artemov ◽  
Ouerdane
Keyword(s):  
Mechanical Properties ◽  
Dielectric Spectroscopy ◽  
Spectroscopy Study ◽  
Broadband Dielectric Spectroscopy ◽  
Dynamical Properties

Though the mechanical properties of ice and water differ, they still have much in common from [...]

Molecular dynamics in semifluorinated side-chain polyesters as studied by broadband dielectric spectroscopy

Polymer ◽  
2006 ◽  
Vol 47 (20) ◽  
pp. 7189-7197 ◽  
Author(s):  
Julius Tsuwi ◽  
Lutz Hartmann ◽  
Friedrich Kremer ◽  
Doris Pospiech ◽  
Dieter Jehnichen ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Dielectric Spectroscopy ◽  
Side Chain ◽  
Broadband Dielectric Spectroscopy
Sign in / Sign up

Export Citation Format

Share Document