Small-angle neutron scattering study of polymeric micellar structures

Journal Article · Thu Nov 17 04:00:00 EST 1994 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100097a030· OSTI ID:6605421

Wu, G; Chu, B ^[1]; Schneider, D K ^[2]

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1. State Univ. of New York, Stony Brook, NY (United States)
2. Brookhaven National Lab., Upton, NY (United States)

Polymeric micellar structures formed by a PEO-PPO-PEO copolymer in o-xylene in the presence of water were investigated by small-angle neutron scattering. In order to reveal the detailed micellar structure, different contrasts among the micellar core, the micellar shell, and the dispersing medium (background) were constructed by selectively changing the protonated/deuterated combination of water and xylene. The micellar structure could be well described by a core-shell structure with the scattering behavior of the micellar shell being very similar to that of a star polymer. The solubilized water existed not only in the micellar core but also in the micellar shell. The volume fraction of a copolymer segments in the micellar shell was rather low, being of the order of 0.2. There seemed to be no sharp interface between the micellar core and the micellar shell. 25 refs., 11 figs., 4 tabs.

• DOE Contract Number: FG02-86ER45237
• OSTI ID: 6605421
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 98:46; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
400201* -- Chemical & Physicochemical Properties
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALKYLATED AROMATICS
AROMATICS
BARYONS
COMPILED DATA
DATA
DEUTERIUM COMPOUNDS
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
HADRONS
HEAVY WATER
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
MATHEMATICAL MODELS
MICELLAR SYSTEMS
NEUTRONS
NUCLEONS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
SCATTERING
WATER
XYLENES