Effects of Adsorption of Low-Molecular-Weight Triblock Copolymers on Interactions between Hydrophobic Surfaces in Water

Langmuir ◽  
1999 ◽  
Vol 15 (9) ◽  
pp. 3242-3249 ◽  
Author(s):  
K. Eskilsson ◽  
B. W. Ninham ◽  
F. Tiberg ◽  
V. V. Yaminsky
Keyword(s):  
Molecular Weight ◽  
Triblock Copolymers ◽  
Low Molecular Weight ◽  
Hydrophobic Surfaces

Phase Behavior of Triblock Copolymers upon Incorporation of Non-Parent, Midblock-Associating Additives

1996 ◽  
Vol 461 ◽  
Author(s):  
J. H. Laurer ◽  
J. F. Mulling ◽  
R. Bukovnik ◽  
R. J. Spontak
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Phase Behavior ◽  
Triblock Copolymer ◽  
Triblock Copolymers ◽  
Thermoplastic Elastomer ◽  
Low Molecular Weight ◽  
Repulsive Interactions

ABSTRACTAddition of a block-selective homopolymer to a microphase-ordered block copolymer is known to result in preferential swelling of the chemically compatible microdomain. In this work, we examine the miscibility between a triblock copolymer and a relatively low-molecular-weight, chemically dissimilar, midblock-associating homopolymer and demonstrate that the homopolymer molecules residing in the swollen midblock matrix self-assemble to avoid repulsive interactions with neighboring microdomains. We extend this investigation to include systems composed of a very low-molecular-weight, midblock-associating additive (an oil). At high oil concentrations, the glassy copolymer endblocks micellize, resulting in the formation of a thermoplastic elastomer gel.

Liquid crystalline block copolymers as adaptive agents for compatibility between CdSe/ZnS quantum dots and low-molecular-weight liquid crystals

2019 ◽  
Vol 7 (15) ◽  
pp. 4326-4331 ◽  
Author(s):  
Miron Bugakov ◽  
Natalia Boiko ◽  
Pavel Samokhvalov ◽  
Xiaomin Zhu ◽  
Martin Möller ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Quantum Dots ◽  
Liquid Crystals ◽  
Block Copolymers ◽  
Liquid Crystalline ◽  
Triblock Copolymers ◽  
Low Molecular Weight ◽  
Adaptive Agents

Liquid crystalline (LC) triblock copolymers were used either as (i) a nematic matrix, which can be loaded with 10 wt% of CdSe/ZnS QDs, or (ii) a compatibilizer, which allows more than 1 wt% of QDs to be introduced in low-molecular-weight cholesteric LCs.

Sub-10 nm domains in high-performance polyetherimides

2019 ◽  
Vol 10 (3) ◽  
pp. 379-385 ◽  
Author(s):  
Dong Guo ◽  
Assad U. Khan ◽  
Tianyu Liu ◽  
Zhengping Zhou ◽  
Guoliang Liu
Keyword(s):  
Molecular Weight ◽  
High Performance ◽  
Triblock Copolymers ◽  
Low Molecular Weight

After condensation with polystyrene oligomers, ultra-low-molecular-weight polyetherimide-based triblock copolymers form disordered nanostructures with domain sizes less than 8 nm.

scholarly journals THE MICELLIZATION OF PLURONICS (PEO-PPO-PEO TRIBLOCK COPOLYMERS)

2009 ◽  
Vol 12 (3) ◽  
pp. 85-94
Author(s):  
Hung Quoc Nguyen ◽  
Søren Hvidt ◽  
Walther Batsberg ◽  
Cuong Ngoc Hoang
Keyword(s):  
Molecular Weight ◽  
Differential Scanning Calorimetry ◽  
Triblock Copolymers ◽  
Low Molecular Weight ◽  
Hexane Extraction ◽  
Scanning Calorimetry ◽  
H Nmr ◽  
Effects Of Temperature ◽  
Molecular Weight Fractions ◽  
Dsc Thermograms

The micellization of several Pluronics (PEO-PPO-PEO triblock copolymers) was investigated by Differential Scanning Calorimetry (DSC). These copolymers were also characterized and purified by liquid chromatography. The PEO/PPO compositions of Pluronics were determined by 'H-NMR. The thermograms from DSC showed a pre micellization shoulder for L81 and L121 solutions. The effects of temperature, PO/EO ratios and impurities on the micellization of copolymers were investigated. The origin of the shoulders in DSC thermograms was shown to be due to the most hydrophobic components in the copolymers, which could be removed by hexane extraction. Low molecular weight fractions of the copolymers were separated by interaction chromatography. The low molecular weight fractions did not contribute to the micellization of the copolymers.

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