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STRUCTURE of COMPOSITES ON THE BASIS OF POLYMER BLEND PVDF and PABI.

Film surface of composite on the basis of matrix ПВДФ+ПАБИ of composition 1: 1 also analyzed for comparison by a method of optical microscopy (fig. 3.13а).

We see, that on a surface of the sample there are particles НЦТС-1 (light spots) in the size from 2 to 5 microns.

On the basis of data fig. 3.13а by means of program Image Pro was

Distribution of particles of filler in the sizes is calculated and the histogram is received (fig. 3.13б), thus centre particle size has made ~ 3 microns.

Fig. 3.13. And - the Microphoto of a film of composite on the basis of matrix ПВДФ+ПАБИ; - a particle size distribution; in - a picture of a section of a composite received on an electronic microscope.


Fig. 3.14. IK spectrums of a film of composite on the basis of a matrix

ПВДФ+ПАБИ From 30 % maintenance НЦТС-1.

On IK a spectrum (fig. 3.14) is traced presence of characteristic absorption bands as for PVDF in the field of 443 sm-1, 511 sm-1 and 1278 sm-1 responsible for presence crystal polar β - a phase, and for PABI in the field of 1075 sm-1 and 840 sm-1. In the yielded composite (as well as in composites on the basis of matrixes from PVDF and PABI) between polymers and piezoelectric filler does not occur chemical interaction that spectral analysis data show to us composite with coherence 0-3 types, hence, is moulded. Thus, physical-mechanical properties of the yielded sort of composites will bring the contribution as pezokeramichesky filler, and the polymeric matrix which agrees to spectral analysis data, incorporates PVDF which in turn has modification, mainly, polar β - phases.

1350-1000 sm-1

Fig. 3.15. 3D IK an absorption spectrum of film sample PVDF + PABI from 30 % maintenance НЦТС-1.

On fig. 3.15 it is presented 3D IK a spectrum of a film of a ternary polymeric composite. As characteristic absorption bands strips have been chosen: for PVDF - 1278 sm-1, for PABI - 1117 sm-1, and for НЦТС-1 - 1126 sm-1. The yielded spectrum represents a wide range of colours. Red shade in the yielded drawing is answered with presence PVDF, green - PABI, and pink - presence of piezoelectric filler. Presence of blue shade presumably falls into PVDF and characterises area of a material with the least thickness, order 3 - 5 microns. Thereby we receive the mutual distribution of components and their concentration in various sites of a polymeric composite. As it is traced, as well as in a case with composites on the basis of a matrix from PABI, formation aglomiratov as thickness of some sites of the sample make order 70 - 80 microns.

On the basis of the received data it is possible to conclude, that analyzed polymers well mix up in the general solvent that allows to receive interesting composites on the basis of the yielded matrix. The Fig. 3.15 also clearly visually shows the mutual distribution of components in a ternary composite.

The received results

Composite with

Have shown quite good

Aggregations of initial grains НЦТС-1

About particle size of filler in

The help of various methods of the analysis coincidence. Absence of the essential can testify that particles

Filler just occupy pores, about answering to the size of individual grain.

The carried out research of polymeric film composites with

The help of optiko-spectral methods has allowed to characterise their morphology on which essentially physical and chemical properties of a material, in turn, should depend. [116]

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A source: Danilov Anatoly Jurevich. OBTAINING POLYMERIC COMPOSITES WITH HIGH FERROELECTRIC AND THERMAL PROPERTIES. Thesis for the degree of candidate of chemical sciences. Tver - 2015. 2015

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