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Shape of Micelles Formed From Strongly Adsorbed Grafted Polymers in Poor Solvents

✍ Scribed by Sudip K. Pattanayek; Gerald G. Pereira

Book ID
102494194
Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
268 KB
Volume
14
Category
Article
ISSN
1022-1344

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✦ Synopsis

Abstract

Summary: We consider the shape of strongly adsorbed polymer chains in poor solvents. Using both SCF theory and Monte Carlo simulations, we find these chains undergo an instability which is driven, surprisingly, by polymer entropy. This instability occurs above some critical grafting separation and the intermediate segregation regime. An analytical calculation also suggests that this instability occurs for strongly adsorbed polymer chains. We proceed to study multi‐chain systems and observe a number of novel morphological structures including circular polymer droplets, lamellae and a polymer layer with a solvent‐filled hole.

Shape of strongly adsorbed multi‐chain polymer globules.

magnified imageShape of strongly adsorbed multi‐chain polymer globules.

📜 SIMILAR VOLUMES

Polymer association in poor solvents: fr
Polymer association in poor solvents: from monomolecular micelles to clusters of chains and phase separation
✍ Fabio Ganazzoli; Guido Raos; Giuseppe Allegra 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 239 KB

We report some recent results obtained in our laboratory on the poor-solvent behavior of macromolecules. We first discuss the globular collapse of short chains that, unlike long ones, may form compact ordered states. We then address the collapse of random AB copolymers, which may provide significant