Aggregates in Solution of Binary Mixtures of Amphiphilic Diblock Copolymers with Different Chain Length

2006 ◽  
Vol 110 (5) ◽  
pp. 2024-2030 ◽  
Author(s):  
Xuan Li ◽  
Ping Tang ◽  
Feng Qiu ◽  
Hongdong Zhang ◽  
Yuliang Yang
Langmuir ◽  
2014 ◽  
Vol 30 (12) ◽  
pp. 3319-3328 ◽  
Author(s):  
Arjun Ghosh ◽  
Shin-ichi Yusa ◽  
Hideki Matsuoka ◽  
Yoshiyuki Saruwatari

1981 ◽  
Vol 36 (1) ◽  
pp. 62-67 ◽  
Author(s):  
F. Schneider ◽  
N. K. Sharma

The diagrams of state of mixtures of 4-n-alkyloxybenzylidene-4'-n-butylanilines with 4-n- alkyl- and 4-n-alkyloxy-4'-cyanobiphenyls are studied. The mixtures form induced smectic phases of type SA, SB and SE. In all three smectic phases the thickness of the smectic layers agrees with the mean values of the molecular lengths. In most cases the induced SA phases do not show uninterrupted miscibility with the SA phases of the pure components. For instance, the system 40 • 4/8 CBP exhibits three separate SA phase areas. The maximum transition temperatures of the induced smectic phases increase with increasing chain length of the azomethines, but remain constant in case of the SA and SB phases or even decrease in case of the SE phases with increasing chain length of the cyanobiphenyls


Author(s):  
Guoyang Qin ◽  
Cong Hu ◽  
Yanfen Jiang ◽  
Shuqi Dong ◽  
Li Liu ◽  
...  

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1516
Author(s):  
Dongmei Liu ◽  
Kai Gong ◽  
Ye Lin ◽  
Tao Liu ◽  
Yu Liu ◽  
...  

We investigated the interfacial properties of symmetric ternary An/AmBm/Bn and An/Am/2BmAm/2/Bn polymeric blends by means of dissipative particle dynamics (DPD) simulations. We systematically analyzed the effects of composition, chain length, and concentration of the copolymers on the interfacial tensions, interfacial widths, and the structures of each polymer component in the blends. Our simulations show that: (i) the efficiency of the copolymers in reducing the interfacial tension is highly dependent on their compositions. The triblock copolymers are more effective in reducing the interfacial tension compared to that of the diblock copolymers at the same chain length and concentration; (ii) the interfacial tension of the blends increases with increases in the triblock copolymer chain length, which indicates that the triblock copolymers with a shorter chain length exhibit a better performance as the compatibilizers compared to that of their counterparts with longer chain lengths; and (iii) elevating the triblock copolymer concentration can promote copolymer enrichment at the center of the interface, which enlarges the width of the phase interfaces and reduces the interfacial tension. These findings illustrate the correlations between the efficiency of copolymer compatibilizers and their detailed molecular parameters.


2012 ◽  
Vol 3 (8) ◽  
pp. 2148 ◽  
Author(s):  
Anne-Laure Brocas ◽  
Matthieu Gervais ◽  
Stephane Carlotti ◽  
Stergios Pispas

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