Correlation between Molecular Architecture, Morphology, and Deformation Behaviour of Styrene/Butadiene Block Copolymers

2003 ◽  
Vol 204 (3) ◽  
pp. 488-499 ◽  
Author(s):  
Rameshwar Adhikari ◽  
Goerg H. Michler ◽  
Trinh An Huy ◽  
Elena Ivan'kova ◽  
Reinhold Godehardt ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Deformation Behaviour ◽  
Molecular Architecture ◽  
Styrene Butadiene

Fracture Behaviour of Styrene/Butadiene Block Copolymers having Different Molecular Architecture

2003 ◽  
Vol 288 (5) ◽  
pp. 432-439 ◽  
Author(s):  
Rameshwar Adhikari ◽  
Ralf Lach ◽  
Goerg H. Michler ◽  
Roland Weidisch ◽  
Konrad Knoll
Keyword(s):  
Block Copolymers ◽  
Fracture Behaviour ◽  
Molecular Architecture ◽  
Styrene Butadiene

Ordered Structures of Styrene Butadiene Block Copolymers

1967 ◽  
Vol 40 (5) ◽  
pp. 1526-1528
Author(s):  
Ed Vanzo
Keyword(s):  
Solid State ◽  
Block Copolymers ◽  
Mechanical Deformation ◽  
Solution Properties ◽  
Two Dimensional ◽  
Ordered Structure ◽  
Ordered Structures ◽  
Polymer Molecules ◽  
Cast Films ◽  
Styrene Butadiene

Abstract Anionically prepared block copolymers of butadiene and styrene exhibit solution properties which result from a two dimensional ordering of the polymer molecules. The most notable of these properties is the iridescent colors of toluene solutions which are dependent on concentration and abruptly change on mechanical deformation. Electron micrographs of the surface of cast films indicate that the ordered structure is retained to some degree in the solid state.

scholarly journals Influence of Uncoupled Diblock Molecules on Mechanical Properties of Styerene/Butadiene/ Styrene Triblock Copolymers

2012 ◽  
Vol 12 ◽  
pp. 149-156 ◽  
Author(s):  
Rameshwar Adhikari
Keyword(s):  
Mechanical Properties ◽  
Block Copolymers ◽  
Tensile Deformation ◽  
Triblock Copolymers ◽  
Large Strain ◽  
Deformation Behaviour ◽  
Mechanical Analysis ◽  
Transmission Electron ◽  
Star Block Copolymers ◽  
Butadiene Styrene

The influence of the presence of uncoupled polystyrene-block-polybutadiene (SB) diblock chains to polystyrene-block-polybutadiene-block-polystyrene (SBS) triblock copolymers on the mechanical properties of the latter has been studied by means of tensile testing and dynamic mechanical analysis preparing several lamellae forming SBS/ SB blends through solution casting. The microphase-separated morphology of the samples was investigated by transmission electron microscopy. Both large strain deformation tensile deformation behaviour and viscoelastic properties of the SBS block copolymers were found to be affected appreciably by the presence of uncoupled SB diblock. The storage modulus of linear SBS was found to drop more sharply in the plateau region than for the radial SBS at the same SB content. At low SB content (up to 20 wt.-% for linear SBS and still higher for radial one), the overall tensile properties was not negatively influenced. On the whole, star block copolymers were found to be less sensitive towards the presence of diblock.DOI: http://dx.doi.org/10.3126/njst.v12i0.6493 Nepal Journal of Science and Technology 12 (2011) 149-156

Novel styrene-butadiene block copolymers by sequential and statistical copolymerization of corresponding macromonomers

1998 ◽  
Vol 128 (1) ◽  
pp. 21-37 ◽  
Author(s):  
Daniel Grande ◽  
Jean-Luc Six ◽  
Valérie Héroguez ◽  
Yves Gnanou ◽  
Michel Fontanille
Keyword(s):  
Block Copolymers ◽  
Styrene Butadiene
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