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Chapter 55 – CLUSTERING IN MACROMOLECULAR MEDIA

Chapter 55 – CLUSTERING IN MACROMOLECULAR MEDIA. 55:2. CHAIN END CLUSTERING . 55:3. CLUSTERING DUE TO MONOMER STICKING INTERACTIONS. 55:2. CHAIN END CLUSTERING . 55:3. CLUSTERING DUE TO MONOMER STICKING INTERACTIONS. SANS data from PEO/d-water:. CLUSTERING AND SOLVATION. DATA ANALYSIS .

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Chapter 55 – CLUSTERING IN MACROMOLECULAR MEDIA

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  1. Chapter 55 – CLUSTERING IN MACROMOLECULAR MEDIA 55:2. CHAIN END CLUSTERING 55:3. CLUSTERING DUE TO MONOMER STICKING INTERACTIONS

  2. 55:2. CHAIN END CLUSTERING

  3. 55:3. CLUSTERING DUE TO MONOMER STICKING INTERACTIONS SANS data from PEO/d-water:

  4. CLUSTERING AND SOLVATION

  5. 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:

  6. RESULTS

  7. CLUSTERING DUE TO HYDROPHOBIC STICKING

  8. 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).

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