Synthesis by polymerization in situ and properties of composite materials based on syndiotactic polypropylene and carbon nanofillers

被引：6
|
作者：
Polshchikov S.V. [1 ]
Nedorezova P.M. [1 ]
Komkova O.M. [1 ]
Klyamkina A.N. [1 ]
Shchegolikhin A.N. [2 ]
Krasheninnikov V.G. [1 ]
Aladyshev A.M. [1 ]
Shevchenko V.G. [3 ]
Muradyan V.E. [4 ]
机构：
[1] Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 119991
[2] Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334
[3] Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, Moscow, 117393
[4] Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432
来源：
Nanotechnologies in Russia | 2014年 / 9卷 / 3-4期
基金：
俄罗斯基础研究基金会;
关键词：
Polypropylenes - Fillers - Polymerization - Thermodynamic stability - Composite materials;
D O I：
10.1134/S1995078014020128
中图分类号：
学科分类号：
摘要：
New composite materials based on a syndiotactic polypropylene (SPP) and nanosized carbon fillers of various types (graphene nanoplates (GNP) and fullerene) are obtained by polymerization in situ. It is shown that the introduction of nanocarbon particles did not lead to a significant decrease in the activity and stereo-specificity of a syndio-specific catalyst. Stress-strain and thermo- and electrophysical properties of the composites are studied. Composites based on SPP are characterized by a higher plasticity than those based on isotactic polypropylene (IPP) at the same filling degrees. An enhancement of the thermal stability of SPP in the presence of carbon nanofillers is demonstrated. A noticeable effect of GNP and fullerene on melting and crystallization of SPP in the composites is found. In SPP/GNP composites, the dielectric permeability is practically independent of the filler concentration. In this case, nanofillers play the role of dielectric probes, making it possible to identify relaxation transitions in the polymer matrix. © 2014 Pleiades Publishing, Ltd.
引用
收藏
页码：175 / 183
页数：8
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