Hydrodynamic and conformational properties of a hyperbranched polymethylallylcarbosilane in dilute solutions

被引：0

作者：

E. B. Tarabukina

A. A. Shpyrkov

D. V. Potapova

A. P. Filippov

N. A. Shumilkina

A. M. Muzafarov

机构：

[1] Russian Academy of Sciences,Institute of Macromolecular Compounds

[2] Russian Academy of Sciences,Enikolopov Institute of Synthetic Polymer Materials

来源：

Polymer Science Series A | 2006年 / 48卷

关键词：

Macromolecule; Polymer Science Series; Intrinsic Viscosity; Hydrodynamic Radius; Linear Polymer;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The hydrodynamic and conformational properties of a hyperbranched polymethylallylcarbosilane in hexane solutions have been studied by light scattering, sedimentation, translational diffusion, and viscometry. Fractions with M = (1–75) × 103 have been used in experiments. The solution behavior of the hyperbranched polymer significantly differs from the properties of both spherical particles and linear polymers. The shape of hyperbranched polymethylallylcarbosilane macromolecules differs from spherical—the asymmetry factor is p ≤ 1.5. Polymethylallylcarbosilane macromolecules in solutions are characterized by compact structure—the hydrodynamic radius is not higher than 4 nm at M = 75 × 103.

引用

页码：974 / 980

页数：6

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