The effect of polymer geometry on polymer–surfactant association in solution

Autor:	Michael C. Gempe, Anna C. Balazs, Andrew P. Lentvorski
Rok vydání:	1991
Předmět:	chemistry.chemical_classification General Physics and Astronomy Polymer architecture Polymer Adhesion Viscosity chemistry Chemical engineering Pulmonary surfactant Rheology Percolation Physical chemistry Molecule Physical and Theoretical Chemistry
Zdroj:	The Journal of Chemical Physics. 95:8467-8473
ISSN:	1089-7690 0021-9606
Popis:	We developed a Monte Carlo computer simulation to examine the effect of polymer architecture on polymer–polymer and polymer–surfactant association in solution. Initially, we compared the self‐assembly of polymers containing four associating sites with the assembling behavior of polymers containing only two such ‘‘stickers,’’ one at each end of the chain. This small difference in the number of stickers lead to marked differences in the properties exhibited by the two types of chains. At short times, the two‐sticker polymers form a percolating network, which fragments into small clusters at long times. The four‐sticker chains do not form such a network, but form relatively large, stable clusters. Surfactant molecules were then introduced into the system and we compared the polymer–surfactant association for both polymer architectures. The surfactants effectively break up the polymer clusters for the four‐sticker architecture, while they enhance the cluster size found in the two‐polymer solution. The implica...
Databáze:	OpenAIRE
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