Dynamics of Composition Fluctuations in Diblock Copolymer Melts above the Ordering Transition

1994 ◽  
Vol 27 (15) ◽  
pp. 4335-4343 ◽  
Author(s):  
S. Vogt ◽  
S. H. Anastasiadis ◽  
G. Fytas ◽  
E. W. Fischer
Keyword(s):  
Diblock Copolymer ◽  
Copolymer Melts ◽  
Composition Fluctuations ◽  
Ordering Transition

Dynamics of Composition Fluctuations in Diblock Copolymer Solutions Far from and Near to the Ordering Transition

1994 ◽  
Vol 27 (17) ◽  
pp. 4762-4773 ◽  
Author(s):  
T. Jian ◽  
S. H. Anastasiadis ◽  
A. N. Semenov ◽  
G. Fytas ◽  
K. Adachi ◽  
...  
Keyword(s):  
Diblock Copolymer ◽  
Composition Fluctuations ◽  
Ordering Transition

Self-diffusion of symmetric diblock copolymer melts near the ordering transition

1991 ◽  
Vol 24 (6) ◽  
pp. 1383-1386 ◽  
Author(s):  
Kenneth R. Shull ◽  
Edward J. Kramer ◽  
Frank S. Bates ◽  
Jeffrey H. Rosedale
Keyword(s):  
Diblock Copolymer ◽  
Self Diffusion ◽  
Copolymer Melts ◽  
Ordering Transition

scholarly journals Stability of the A15 phase in diblock copolymer melts

2019 ◽  
Vol 116 (27) ◽  
pp. 13194-13199 ◽  
Author(s):  
Morgan W. Bates ◽  
Joshua Lequieu ◽  
Stephanie M. Barbon ◽  
Ronald M. Lewis ◽  
Kris T. Delaney ◽  
...  
Keyword(s):  
Diblock Copolymer ◽  
Self Assembly ◽  
Rational Design ◽  
Mean Field ◽  
Polymer Science ◽  
Disorder Phase Transition ◽  
Copolymer Melts ◽  
Self Consistent Field ◽  
Self Consistent Field Theory ◽  
Composition Fluctuations

The self-assembly of block polymers into well-ordered nanostructures underpins their utility across fundamental and applied polymer science, yet only a handful of equilibrium morphologies are known with the simplest AB-type materials. Here, we report the discovery of the A15 sphere phase in single-component diblock copolymer melts comprising poly(dodecyl acrylate)−block−poly(lactide). A systematic exploration of phase space revealed that A15 forms across a substantial range of minority lactide block volume fractions (fL = 0.25 − 0.33) situated between the σ-sphere phase and hexagonally close-packed cylinders. Self-consistent field theory rationalizes the thermodynamic stability of A15 as a consequence of extreme conformational asymmetry. The experimentally observed A15−disorder phase transition is not captured using mean-field approximations but instead arises due to composition fluctuations as evidenced by fully fluctuating field-theoretic simulations. This combination of experiments and field-theoretic simulations provides rational design rules that can be used to generate unique, polymer-based mesophases through self-assembly.

Surface segregation in model symmetric polyolefin diblock copolymer melts

1994 ◽  
Vol 4 (12) ◽  
pp. 2231-2248 ◽  
Author(s):  
Mohan Sikka ◽  
Navjot Singh ◽  
Frank S. Bates ◽  
Alamgir Karim ◽  
Sushil Satija ◽  
...  
Keyword(s):  
Diblock Copolymer ◽  
Surface Segregation ◽  
Copolymer Melts

Composition Fluctuations and Coil Conformation in a Poly(ethylene−propylene)−Poly(ethylethylene) Diblock Copolymer as a Function of Temperature and Pressure

1996 ◽  
Vol 29 (9) ◽  
pp. 3263-3271 ◽  
Author(s):  
Henrich Frielinghaus ◽  
Dietmar Schwahn ◽  
Kell Mortensen ◽  
Kristoffer Almdal ◽  
Tasso Springer
Keyword(s):  
Diblock Copolymer ◽  
Ethylene Propylene ◽  
Temperature And Pressure ◽  
Poly Ethylene ◽  
Composition Fluctuations

Effects of confinement on the order-disorder transition of diblock copolymer melts

2006 ◽  
Vol 124 (14) ◽  
pp. 144902 ◽  
Author(s):  
Bing Miao ◽  
Dadong Yan ◽  
Charles C. Han ◽  
An-Chang Shi
Keyword(s):  
Diblock Copolymer ◽  
Disorder Transition ◽  
Copolymer Melts

Order and Disorder in Symmetric Diblock Copolymer Melts

1995 ◽  
Vol 28 (5) ◽  
pp. 1429-1443 ◽  
Author(s):  
Jeffrey H. Rosedale ◽  
Frank S. Bates ◽  
Kristoffer Almdal ◽  
Kell Mortensen ◽  
George D. Wignall
Keyword(s):  
Diblock Copolymer ◽  
Order And Disorder ◽  
Copolymer Melts
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