Effect of homopolymer molecular weight on the morphology of block copolymer/homopolymer blends

1987 ◽  
Vol 20 (6) ◽  
pp. 1431-1434 ◽  
Author(s):  
X. Quan ◽  
I. Gancarz ◽  
J. T. Koberstein ◽  
G. D. Wignall
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Homopolymer Blends

Photoinduced optical anisotropy in azobenzene containing block copolymer–homopolymer blends. Influence of microstructure and molecular weight

2012 ◽  
Vol 48 (3) ◽  
pp. 613-620 ◽  
Author(s):  
Cristina Berges ◽  
Nélida Gimeno ◽  
Luis Oriol ◽  
Milagros Piñol ◽  
Patricia Forcén ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Optical Anisotropy ◽  
Homopolymer Blends ◽  
Photoinduced Optical Anisotropy

Effect of block molecular weight distribution on the structure formation in block copolymer/homopolymer blends

2011 ◽  
Vol 50 (2) ◽  
pp. 106-116 ◽  
Author(s):  
Jessica Listak ◽  
Xiaolong Jia ◽  
Andrzej Plichta ◽  
Mingjiang Zhong ◽  
Krzysztof Matyjaszewski ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Structure Formation ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Homopolymer Blends

Effect of Homopolymer Molecular Weight on Nanophase-Separated Structures of AB Block Copolymer/C Homopolymer Blends with Hydrogen-Bonding Interactions

2009 ◽  
Vol 42 (18) ◽  
pp. 7098-7102 ◽  
Author(s):  
Katarzyna Dobrosielska ◽  
Sou Wakao ◽  
Jiro Suzuki ◽  
Kazutaka Noda ◽  
Atsushi Takano ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Hydrogen Bonding ◽  
Block Copolymer ◽  
Hydrogen Bonding Interactions ◽  
Homopolymer Blends ◽  
Ab Block Copolymer

A variety of morphologies in diblock copolymer/homopolymer blends

1989 ◽  
Vol 47 ◽  
pp. 346-347
Author(s):  
Edwin L. Thomas ◽  
Karen I. Winey
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Diblock Copolymer ◽  
Copolymer Composition ◽  
Molecular Weights ◽  
Copolymer Concentration ◽  
Wide Range ◽  
Homopolymer Blends ◽  
Long Range Ordering ◽  
Double Diamond

A wide range of morphologies and thereby physical properties can be achieved in block copolymer/homopolymer blends by varying the copolymer composition, copolymer concentration and molecular weights. Recently we investigated micelle shape transitions in diblock copolymer with homopolymer blends at low copolymer concentration. In this paper we study the microstructure over a wider concentration range for a polystyrene-polybutadiene (PS/PB) diblock copolymer of molecular weight 20.5 × 103/20.5 × 103 blended with 17.2 × 103 molecular weight homopolystyrene (hPS).Figure 1 shows schematically a possible spectrum of microdomain structures dependent on the copolymer concentration of a lamellar PS/PB and hPS. Below the critical micelle concentration (CMC) the block copolymer is molecularly dispersed in the homopolymer exhibiting a homogeneous phase. As diblock concentration increases the minority (i.e. PB) forms spherical and/or cylindrical micelles randomly dispersed in the hPS. Further increases in diblock concentration induces long range ordering of various microdomains. In addition three biphasic regions are proposed in which two phases coexist: isotropic cylinders with ordered cylinders, ordered cylinders with ordered bicontinuous double diamond (OBDD), and OBDD with swollen lamellae.

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

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
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