Study of Copolymer-Homopolymer Blends

1985 ◽  
pp. 449-452 ◽  
Author(s):  
P. Marie ◽  
J. Selb ◽  
A. Rameau ◽  
R. Duplessix ◽  
Y. Gallot
Keyword(s):  
Homopolymer Blends

Morphological behavior of compatibilized ternary blends prepared by mechanical mixing

1993 ◽  
Vol 51 ◽  
pp. 1200-1201
Author(s):  
S.D. Smith ◽  
R.J. Spontak ◽  
D.H. Melik ◽  
S.M. Buehler ◽  
K.M. Kerr ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Diblock Copolymers ◽  
Ternary Blends ◽  
Mechanical Mixing ◽  
Design Considerations ◽  
Covalently Bonded ◽  
Homopolymer Blends ◽  
Emulsifying Agent ◽  
Surface Active ◽  
Low Entropy

When blended together, homopolymers A and B will normally macrophase-separate into relatively large (≫1 μm) A-rich and B-rich phases, between which exists poor interfacial adhesion, due to a low entropy of mixing. The size scale of phase separation in such a blend can be reduced, and the extent of interfacial A-B contact and entanglement enhanced, via addition of an emulsifying agent such as an AB diblock copolymer. Diblock copolymers consist of a long sequence of A monomers covalently bonded to a long sequence of B monomers. These materials are surface-active and decrease interfacial tension between immiscible phases much in the same way as do small-molecule surfactants. Previous studies have clearly demonstrated the utility of block copolymers in compatibilizing homopolymer blends and enhancing blend properties such as fracture toughness. It is now recognized that optimization of emulsified ternary blends relies upon design considerations such as sufficient block penetration into a macrophase (to avoid block slip) and prevention of a copolymer multilayer at the A-B interface (to avoid intralayer failure).

scholarly journals Instability of the Microemulsion Channel in Block Copolymer-Homopolymer Blends

2020 ◽  
Vol 125 (11) ◽  
Author(s):  
Bart Vorselaars ◽  
Russell K. W. Spencer ◽  
Mark W. Matsen
Keyword(s):  
Block Copolymer ◽  
Homopolymer Blends

Block Copolymers in Homopolymer Blends:  Interface vs Micelles

2001 ◽  
Vol 34 (25) ◽  
pp. 8663-8668 ◽  
Author(s):  
Adeyinka Adedeji ◽  
Suping Lyu ◽  
Christopher W. Macosko
Keyword(s):  
Block Copolymers ◽  
Homopolymer Blends

Mixing state of amphiphilic di-block copolymer/homopolymer blends

2005 ◽  
Vol 81 (3) ◽  
pp. 563-567 ◽  
Author(s):  
S. Y. Jung ◽  
T. Yamada ◽  
H. Yoshida ◽  
T. Iyoda
Keyword(s):  
Block Copolymer ◽  
Mixing State ◽  
Homopolymer Blends

Tunable Hierarchical Assembly on Polymer Surfaces: Combining Microphase and Macrophase Separation in Copolymer/Homopolymer Blends

Langmuir ◽  
2008 ◽  
Vol 24 (13) ◽  
pp. 6391-6394 ◽  
Author(s):  
E. Ibarboure ◽  
A. Bousquet ◽  
G. Toquer ◽  
E. Papon ◽  
J. Rodríguez-Hernández
Keyword(s):  
Polymer Surfaces ◽  
Hierarchical Assembly ◽  
Homopolymer Blends ◽  
Macrophase Separation

T-Junction Grain Boundaries in Block Copolymer−Homopolymer Blends

2000 ◽  
Vol 33 (23) ◽  
pp. 8739-8745 ◽  
Author(s):  
Engin Burgaz ◽  
Samuel P. Gido
Keyword(s):  
Block Copolymer ◽  
Grain Boundaries ◽  
Homopolymer Blends
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