Secondary structure of globules of copolymers consisting of amphiphilic and hydrophilic units: Effect of potential range

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作者
V. A. Ermilov
V. V. Vasilevskaya
A. R. Khokhlov
机构
[1] Russian Academy of Sciences,Nesmeyanov Institute of Organoelement Compounds
来源
Polymer Science Series A | 2010年 / 52卷
关键词
Polymer Science Series; Monomer Unit; Aggregation Number; Helical Conformation; Polymerization Degree;
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摘要
The relation of the coil-globule transition in macromolecules consisting of amphiphilic and hydrophilic monomer units to the radius of action of the interaction potential is investigated by the method of computer-assisted experiments. The internal structure of globules formed by such macromolecules is significantly dependent on the radius of action of the potential. In the case of the long-range potential, the globule is characterized by the blob structure, while in the case of the short-range potential, a quasi-helical structure forms. In this structure, the skeleton of a macromolecule forms a helical turn, and the direction of twisting may vary from one turn to another. The coil-globule transition in such macromolecules proceeds through formation of the necklace conformation from quasi-helical micelle beads. For sufficiently long macromolecules, the dimensions of such globules are linearly dependent on the degree of polymerization.
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页码:317 / 327
页数:10
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