Small-Angle X-ray Contrast-Variation Study of Micelles Formed by Poly(styrene)−Poly(ethylene oxide) Block Copolymers in Aqueous Solution

1996 ◽  
Vol 29 (11) ◽  
pp. 4006-4014 ◽  
Author(s):  
P. Hickl ◽  
M. Ballauff ◽  
A. Jada
Keyword(s):  
Aqueous Solution ◽  
Block Copolymers ◽  
Ethylene Oxide ◽  
Small Angle ◽  
Contrast Variation ◽  
X Ray ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Effect of Composition and Molecular Structure of Poly(l-lactic acid)/Poly(ethylene oxide) Block Copolymers on Micellar Morphology in Aqueous Solution

Langmuir ◽  
2018 ◽  
Vol 34 (50) ◽  
pp. 15470-15482 ◽  
Author(s):  
Ekaterina V. Razuvaeva ◽  
Alevtina I. Kulebyakina ◽  
Dmitry R. Streltsov ◽  
Artem V. Bakirov ◽  
Roman A. Kamyshinsky ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Aqueous Solution ◽  
Lactic Acid ◽  
Block Copolymers ◽  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Micellar Morphology

Modification of Montmorillonite with PEO-b-PS Copolymers

2000 ◽  
Vol 628 ◽  
Author(s):  
Frederick L. Beyer ◽  
Nora C. Beck Tan
Keyword(s):  
Block Copolymers ◽  
Ethylene Oxide ◽  
Block Length ◽  
X Ray Diffraction ◽  
X Ray ◽  
Volume Fractions ◽  
Melt Intercalation ◽  
Molecular Weights ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

ABSTRACTWyoming montmorillonite has been modified with block copolymers of poly (styrene) (PS) and poly(ethylene oxide) (PEO). Using melt intercalation techniques, PEO-b-PS copolymers spanning a range of volume fractions and molecular weights were mixed with montmorillonite, annealed above the Tg of PS, and characterized using X-ray diffraction. Most of the block copolymers intercalated the clay, with several samples exhibiting multiple Bragg reflections from increased gallery spacing. Samples with higher PEO volume fractions were most likely to have intercalation. For a given PS block length, longer PEO blocks were more likely to produce intercalation. In general, the increased gallery spacings were close to those produced by modifying montmorillonite with PEO homopolymer.

Crystallization Behavior of Poly(ethylene oxide) and Its Blends Using Time-Resolved Wide- and Small-Angle X-ray Scattering

2000 ◽  
Vol 33 (13) ◽  
pp. 4842-4849 ◽  
Author(s):  
Melissa S. Lisowski ◽  
Qiang Liu ◽  
Jaedong Cho ◽  
James Runt ◽  
Fengji Yeh ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Small Angle ◽  
Crystallization Behavior ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Ray Scattering
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