Chapter 55

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Chapter 55 CLUSTERING IN MACROMOLECULAR MEDIA
552. CHAIN END CLUSTERING
553. CLUSTERING DUE TO MONOMER STICKING
INTERACTIONS
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552. CHAIN END CLUSTERING
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553. CLUSTERING DUE TO MONOMER STICKING
INTERACTIONS
SANS data from PEO/d-water
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CLUSTERING AND SOLVATION
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DATA ANALYSIS
PEO monomer
Alternating copolymer with -- oxygen blocks
(component 1) -- ethylene blocks (component 2)
-- d-water (component 3)
Ternary RPA
Contrast factors
RPA factors
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RESULTS
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CLUSTERING DUE TO HYDROPHOBIC STICKING
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COMMENTS
-- Clustering in macromolecular media can be
caused by unhappy hydrophobic groups sticking
to other hydrophobic groups. -- The PEO monomer
is modeled as an alternating copolymer of
ethylene and oxygen groups. -- The
ethylene/d-water and oxygen/d-water interactions
characterize LCST phase behavior (phase
separation upon heating), while the
ethylene/oxygen interactions characterize a UCST
phase behavior (phase separation upon cooling).