Journal ArticleDOI
Study of the molecular origin of the mechanical and dielectric β relaxation of methyl methacrylate/isopropenyl methyl ketone copolymers
Reads0
Chats0
TLDR
In this article, l'etude dielectrique, mecanique et par TSC en faveur d'une combinaison d'un barriere intra-and intermoleculaire dans la relaxation beta.Abstract:
Resultats de l'etude dielectrique, mecanique et par TSC en faveur d'une combinaison d'une barriere intra- et intermoleculaire dans la relaxation betaread more
Citations
More filters
Journal ArticleDOI
Characterization of Functionalized Side-Chain Liquid Crystal Methacrylates Containing Nonmesogenic Units by Dielectric Spectroscopy
Alfonso Martinez-Felipe,L. Santonja-Blasco,José David Badia,Corrie T. Imrie,Amparo Ribes-Greus +4 more
TL;DR: In this article, the dielectric response of a series of side-chain liquid crystal copolymers, SCLCPs, the poly[6-(4′-methoxyazobenzene-4′)-oxy)hexyl methacrylate]-co-poly[methyl methACrylate]s, MeOAzB/MMA copolymer, is presented in the frequency range f = 10−2 to 107 Hz and over the temperature interval T = −150 to 120 °C.
Journal ArticleDOI
Liquid Crystalline Copolymers Containing Sulfonic and Light-Responsive Groups: From Molecular Design to Conductivity.
TL;DR: The light-responsiveness of the polymers, via reversible trans-to-cis photoisomerization of azobenzene groups, and the local activation of conductivity at relatively low temperatures, opens the possibility to prepare polymer electrolytes for energy conversion and storage, whose conductivity could be controlled and optimised by external stimuli, including light irradiation.
Journal ArticleDOI
The role of conductivity and molecular mobility on the photoanisotropic response of a new azo-polymer containing sulfonic groups
Sakinah Mohd Alauddin,Nurul Fadhilah Kamalul Aripin,T.S. Velayutham,Irakli Chaganava,Alfonso Martinez-Felipe +4 more
TL;DR: In this article, the UMRG grant RP038B-17AFR was used to support the University Malaya under the Global Challenge Research Fund Internal Pump Priming Fund Round 2.
References
More filters
Journal ArticleDOI
Ionic Thermoconductivity. Method for the Investigation of Polarization in Insulators
Journal ArticleDOI
Viscous Liquids and the Glass Transition. III. Secondary Relaxations in Aliphatic Alcohols and Other Nonrigid Molecules
G. P. Johari,Martin Goldstein +1 more
TL;DR: In this article, the dielectric permittivity and the Dielectric loss factor of 5 methyl-3, 4 methylmethyl-3 and 3 methylpentane were measured from 50 to 105 Hz and from −196 to about 20°C above their respective glass transition temperatures.
Journal ArticleDOI
Relation between the structure of polymers and their dynamic mechanical and electrical properties. Part I. Some alpha-substituted acrylic ester polymers
TL;DR: In this paper, a comprehensive study of the dynamic mechanical and dielectric properties of acrylic polymers has been made; these two properties were found to be intrinsically correlated; results are given in graphic form.
Journal ArticleDOI
Secondary Loss Peaks in Glassy Amorphous Polymers
TL;DR: In this paper, a short description of the determination of secondary mechanical loss peaks in glassy amorphous polymers is given, and the molecular motions causing secondary loss peaks are classified.
Journal ArticleDOI
The infra-red absorption characteristics of syndiotactic poly(methyl methacrylate) from 1050 cm−1 to 1300 cm−1☆
S Havriliak,N Roman +1 more
TL;DR: In this article, the authors used seven Lorenz type dispersion functions associated with a single absorption peak for the ester group of s-poly(methyl methacrylate) while simple esters (i.e. methyl acetate) exhibit only one.
Related Papers (5)
Molecular relaxations in Halar, an alternating copolymer of ethylene and chlorotrifluoroethylene
Copolymerization between styrene and methyl methacrylate under conditions where low polymers are formed
S. Sakakibara,K. Ito +1 more