Aggregation behavior of the blends of PS-b-PEO-b-PS and PS-b-PMMA at the air/water interface

RSC Advances ◽  
2014 ◽  
Vol 4 (90) ◽  
pp. 49219-49227 ◽  
Author(s):  
Xiaoqun Wang ◽  
Gangyao Wen ◽  
Changchun Huang ◽  
Zhuang Wang ◽  
Yunbo Shi
Keyword(s):  
Aggregation Behavior ◽  
Water Interface ◽  
Chain Entanglement ◽  
Lb Films ◽  
Air Water Interface

Upon compression, large close-packed aggregates in the mixed LB films split into small uniform ones. Hysteresis degree can be interpreted with chain entanglement and block mobility.

Temperature-Dependent Aggregation Behavior of Symmetric Long-Chain Bolaamphiphiles at the Air−Water Interface

Langmuir ◽  
2006 ◽  
Vol 22 (6) ◽  
pp. 2668-2675 ◽  
Author(s):  
Karen Köhler ◽  
Annette Meister ◽  
Bodo Dobner ◽  
Simon Drescher ◽  
Friederike Ziethe ◽  
...  
Keyword(s):  
Aggregation Behavior ◽  
Water Interface ◽  
Temperature Dependent ◽  
Air Water Interface ◽  
Long Chain

Aggregation Behavior of the Blends of Homo-PS and PS-b-PEO-b-PS at the Air/Water Interface

Langmuir ◽  
2019 ◽  
Vol 35 (41) ◽  
pp. 13435-13441
Author(s):  
Wei Xu ◽  
Gangyao Wen ◽  
Tao Wu ◽  
Nanyang Chen
Keyword(s):  
Aggregation Behavior ◽  
Water Interface ◽  
Air Water Interface

Effect of Chain Microstructure and Subphase pH on the Surface Properties and Aggregation Behavior of Amphiphilic Copolymers Based on Fluoroacrylates

2019 ◽  
Vol 816 ◽  
pp. 312-317
Author(s):  
Alexandra O. Grigoreva ◽  
E.Y. Polozov ◽  
S.D. Zaitsev
Keyword(s):  
Acrylic Acid ◽  
Surface Properties ◽  
Butyl Acrylate ◽  
Langmuir Monolayer ◽  
Aggregation Behavior ◽  
Reactivity Ratios ◽  
Water Interface ◽  
Amphiphilic Copolymers ◽  
Air Water Interface ◽  
Raft Agent

Copolymerization of 2,2,3,3,4,4,5,5-octafluoropentyl acrylate (OFPA) and acrylic acid (AA), OFPA and tert-butyl acrylate (t-BA) in presence ofdibenzylcarbonotrithioate (BTC) and polymeric RAFT-agents was studied, reactivity ratios were calculated. It was shown that type of RAFT-agent can influence on chain microstructure of obtained polymers. Aggregation behavior of obtained amphiphilic copolymers with different microstructures at the air/water interface was characterized by the Langmuir monolayer technique. The effect of the microstructureand subphase pH on the isotherm curves were shown.

Synthesis and physical properties of semicapped C6S8 compounds connected with their formation of monolayers and LB films at air-water interface

1988 ◽  
Vol 27 (3-4) ◽  
pp. 575-580 ◽  
Author(s):  
A. Otsuka ◽  
G. Saito ◽  
T. Nakamura ◽  
M. Matsumoto ◽  
Y. Kawabata ◽  
...  
Keyword(s):  
Physical Properties ◽  
Water Interface ◽  
Lb Films ◽  
Air Water Interface

scholarly journals Tadpole-Shaped POSS-Based Copolymers and the Aggregation Behavior at Air/Water Interface

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Lin Zhu ◽  
Fang Chen ◽  
Xiaoyan Ma ◽  
Xiu Qiang ◽  
Zhiguang Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Block Copolymers ◽  
Surface Pressure ◽  
Self Assembly ◽  
Aggregation Behavior ◽  
Structure Evolution ◽  
Interfacial Rheology ◽  
Water Interface ◽  
Block Sequence ◽  
Air Water Interface

The aggregation behavior of three tadpole-shaped Polyhedral oligomeric silsesquioxane (POSS) based block copolymers using different blocks poly(methyl methacrylate) (PMMA) and poly(trifluoroethyl methacrylate) (PTFEMA) with different block sequence and ratio (POSS-PTFEMA161-b-PMMA236, POSS-PMMA277-b-PTFEMA130, and POSS-PMMA466-b-PTFEMA172) was investigated on the air-water interface. The interfacial rheology of three block copolymers was studied by surface pressure isotherm, compression modulus measurements, and compression and expansion hysteresis analysis on the Langmuir trough. The block sequence and ratio play a great role in self-assembly behavior at the interface. Based on surface pressure isotherm analysis, a thin film with low elasticity was achieved for the POSS-PTFEMA161-b-PMMA236. Moreover, for the block copolymer with same segment sequence (POSS-PMMA2-b-PTFEMA), the thin film compression capability is increased with increasing the PMMA ratio. The morphology of the deposited LB thin film was illustrated by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). We observed that a thin film was composed by crater-shaped quasi-2D micelles for POSS-PTFEMA-b-PMMA, while it was proved that only flaky texture was observed for both POSS-PMMA277-b-PTFEMA130 and POSS-PMMA466-b-PTFEMA172. The thickness and area of flaky aggregates were greatly related to PMMA ratio. The different interface self-assembly structure evolution was proposed based on the interfacial rheology and thin film morphology studies.

Aggregation Behavior of Homo‐PS/PS‐b‐P2VP Blends at the Air/Water Interface

2008 ◽  
Vol 29 (14) ◽  
pp. 1248-1253 ◽  
Author(s):  
Gangyao Wen ◽  
Bonghoon Chung ◽  
Taihyun Chang
Keyword(s):  
Aggregation Behavior ◽  
Water Interface ◽  
Air Water Interface
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