Structural Characterization of Nonionic Surfactant Micelles with CO2/Ethylene Oxide Head Groups and Their Temperature Dependence

Langmuir ◽  
2021 ◽  
Author(s):  
Vivian J. Spiering ◽  
Albert Prause ◽  
Laurence Noirez ◽  
Marie-Sousai Appavou ◽  
Michael Gradzielski
Keyword(s):  
Ethylene Oxide ◽  
Temperature Dependence ◽  
Nonionic Surfactant ◽  
Structural Characterization ◽  
Surfactant Micelles ◽  
Head Groups

Structural characterization of aqueous solution poly(oligo(ethylene oxide) monomethyl methacrylate)-grafted silica nanoparticles

2016 ◽  
Vol 186 ◽  
pp. 311-324 ◽  
Author(s):  
Arnaldo T. Lorenzo ◽  
Ramakrishna Ponnapati ◽  
Tirtha Chatterjee ◽  
Ramanan Krishnamoorti
Keyword(s):  
Ethylene Oxide ◽  
Silica Nanoparticles ◽  
Structural Characterization ◽  
Molecular Level ◽  
Polymer Chains ◽  
Scattering Data ◽  
Dilute Solution ◽  
Contrast Variation ◽  
Aqueous Dispersions

The structure of aqueous dispersions of poly(oligo(ethylene oxide) monomethyl methacrylate)-grafted silica nanoparticles was characterized using contrast variation small-angle neutron scattering studies. Modeling the low hybrid concentration dispersion scattering data using a fuzzy sphere and a polydisperse core–shell model, demonstrated that the polymer chains are highly swollen in the dispersions as compared to the dimensions of the free polymer chains in dilute solution. At higher hybrid concentrations, the dispersions were well described using a Percus–Yevick approximation to describe the structure factor. These structural characterization tools are excellent starting points for effective molecular level descriptors of dewetting and macroscopic phase transitions for polymer tethered hybrid nanoparticle systems.

Structural characterization of the temperature dependence of C60‐thin films on mica (001) by x‐ray diffraction

1994 ◽  
Vol 76 (6) ◽  
pp. 3337-3340 ◽  
Author(s):  
S. Henke ◽  
K. H. Thürer ◽  
J. K. N. Lindner ◽  
B. Rauschenbach ◽  
B. Stritzker
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Structural Characterization ◽  
X Ray Diffraction ◽  
X Ray

Thermal and structural characterization of poly(ethylene-oxide)/keratin blend films

2007 ◽  
Vol 89 (2) ◽  
pp. 601-608 ◽  
Author(s):  
C. Tonin ◽  
A. Aluigi ◽  
C. Vineis ◽  
A. Varesano ◽  
A. Montarsolo ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Structural Characterization ◽  
Blend Films ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Thermomechanical and structural characterization of polybutadiene/poly(ethylene oxide)/ CNT stretchable electrospun fibrous membranes

2020 ◽  
Vol 32 (1) ◽  
pp. 248-261
Author(s):  
Remzi Gürbüz ◽  
Baran Sarac ◽  
Viktor Soprunyuk ◽  
Eray Yüce ◽  
Jürgen Eckert ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Structural Characterization ◽  
Poly Ethylene Oxide ◽  
Fibrous Membranes ◽  
Poly Ethylene

Molecular and Structural Characterization of Hybrid Poly(ethylene oxide)–Polyhedral Oligomeric Silesquioxanes Star-Shaped Macromolecules

2015 ◽  
Vol 119 (4) ◽  
pp. 1669-1680 ◽  
Author(s):  
Gladys M.-E. Pozza ◽  
Sarah Crotty ◽  
Michel Rawiso ◽  
Ulrich S. Schubert ◽  
Pierre J. Lutz
Keyword(s):  
Ethylene Oxide ◽  
Structural Characterization ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Structural Characterization of Nonionic Surfactant Reverse Micelles in Diglycerol Monolaurate/Squalene System

2010 ◽  
Vol 117 ◽  
pp. 87-92
Author(s):  
Lok Kumar Shrestha ◽  
Peter Worsch ◽  
Kenji Aramaki
Keyword(s):  
Nonionic Surfactant ◽  
Cross Section ◽  
Structural Characterization ◽  
Reverse Micelles ◽  
Maximum Length ◽  
Scattering Data ◽  
Fixed Temperature ◽  
Saxs Data ◽  
Model Free

Structure of nonionic surfactant diglycerol monolaurate (C12G2) reverse micelles in squalene at different surfactant concentrations and temperatures is presented. For the structural characterization of the micelles, small-angle X-ray scattering (SAXS) technique is used. The scattering data is evaluated by virtually model free generalized indirect Fourier transformation (GIFT) method. GIFT analysis of the SAXS data has shown the clear evidence on the formation of rod-like micelles in the C12G2/squalene system at higher temperatures. At fixed temperature, increasing surfactant concentration induces one-dimensional micellar growth; the maximum length of the micelles increases with concentration, but the micellar cross-section remains essentially the same. On the other hand, at fixed concentration, the maximum length of the micelles decreases with the rise of temperature. It is found that the length of micelles decreases by ~ 35% keeping cross-section diameter unchanged with the rise of temperature from 60 to 80 °C in 5 wt% wt% C12G2/squalene system.

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