Thermotropic liquid crystal behavior on PBLG-PDMS-PBLG triblock copolymers
PAPON, Eric
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
PAPON, Eric
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Reduce
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Language
en
Article de revue
This item was published in
Journal of Polymer Science Part A: Polymer Chemistry. 2006, vol. 44, n° 15, p. 4668-4679
Wiley
English Abstract
In this contribution, the preparation of rod-coil-rod triblock copolymers based on polydimethylsiloxane and polypeptide [poly(gamma-benzyl-L-glutamate)] is reported. Firstly, self-assembly in rod-like structures was ...Read more >
In this contribution, the preparation of rod-coil-rod triblock copolymers based on polydimethylsiloxane and polypeptide [poly(gamma-benzyl-L-glutamate)] is reported. Firstly, self-assembly in rod-like structures was demonstrated via polarized optical microscopy and small-angle light scattering. Further structuration details were obtained using X-ray scattering and AFM imaging to establish the formation of a double-hexagonal structure and to accurately define the morphological dimensions of the rodlike structures. The thermal behavior of these structures was investigated using dynamic mechanical analysis and differential scanning calorimetry. We conclude by addressing an unexpected reversible thermal transition within the 130-150 degrees C temperature range and the ensuing associated organizational modifications.Read less <
English Keywords
BLOCK-COPOLYMERS
triblock copolymers
POLY(GAMMA-BENZYL L-GLUTAMATE)
hexagonal
liquid crystal
nematic
polypeptide
rodlike
self-assembly
N-CARBOXYANHYDRIDES
POLYPEPTIDES
Origin
Hal imported