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2019 (2) 7

Structural features and porosity of the POSS-containing nanocomposites based on polyurethane-poly(hydroxypropyl methacrylate) matrix, which is formed by the principle of sequential IPNs

 

L.V. Karabanova1, L.A. Honcharova1, V.I. Sapsay2, D.O. Klymchuk2

 

1Institute of Macromolecular Chemistry NAS of Ukraine

48, Kharkivske shose, Kyiv, 02160, Ukraine

2N.G. Kholodny Institute of Botany NAS of Ukraine

2, Tereshchenkivs’ka str., Kyiv, 01004, Ukraine

 

Polym. J., 2019, 41, no. 2: 101-108

 

Section: Synthesis of polymers.

 

Language: Ukrainian.

 

Abstract:

 

 

POSS-containing nanocomposites based on a multicomponent polymer matrix consisting of polyurethane (PU) and poly(hydroxypropyl methacrylate) (PHPMA), and 1,2-propanediolisobutyl polyhedral oligomeric silsesquioxanes (POSS), used as functionalized nanofiller, were synthesized. The porosity of created nanocomposites by adsorption of inert solvent vapor and morphology by scanning electron microscopy were studied. It was  shown that nanofiller, introduced into the semi-IPN at the stage of polyurethane synthesis, plays the role of a nanostructuring agent in the system. As a result, the nanocomposites with more ordered structure are formed, which leads to obtaining of materials with improved physical and mechanical properties. By study the porosity was shown  that POSS-containing nanocomposites based on polyurethane-poly(hydroxypropyl methacrylate) semi-IPNs are the materials with dense structure and transitional pores with size of 50 to 60 A and could be used as gas barrier membranes.

 

Keywords: nanocomposites, polyurethane, 1,2-propanediol isobutyl-POSS, semi-IPN, porosity, morphology.

 

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