Chemistry Reference
In-Depth Information
17
On Polymer
Nanocomposites
A. A. Olkhov, D. J. Liaw, G. V. Fetisov,
M. A. Goldschtrakh,N. N. Kononov,
A. A. Krutikova, P. A. Storozhenko, G. E. Zaikov,
and A. A. Ischenko
CONTENTS
17.1 Introduction ..................................................................................................... 223
17.2 Objects of Research ......................................................................................... 225
17.3 Experimental Methods..................................................................................... 226
17.4 Discussion and Results .................................................................................... 227
Keywords ................................................................................................................. 233
Acknowledgment ..................................................................................................... 233
References ................................................................................................................ 233
17.1 INTRODUCTION
In recent years, considerable efforts have been devoted for search new functional
nanocomposite materials with unique properties that are lacking in their traditional
analogues. Control of these properties is an important fundamental problem. The use
of nanocrystals as one of the elements of a polymer composite opens up new possibili-
ties for targeted modification of its optical properties because of a strong dependence
of the electronic structure of nanocrystals on their sizes and geometric shapes. An in-
crease in the number of nanocrystals in the bulk of composites is expected to enhance
long-range correlation effects on their properties. Among the known nanocrystals,
nanocrystalline silicon (nc-Si) attracts high attention due to its extraordinary opto-
electronic properties and manifestation of quantum size effects. Therefore, it is widely
used for designing new generation functional materials for nanoelectronics and infor-
mation technologies. The use of nc-Si in polymer composites calls for a knowledge
of the processes of its interaction with polymeric media. Solid nanoparticles can be
combined into aggregates (clusters), and when the percolation threshold is achieved, a
continuous cluster is formed.
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