Phase composition and orientation of low-molar mass compounds in micropores of oriented polymer matrices

Москвина, М. А.; Волков, А. В.; Grokhovskaya, T.Ye.; Volynskiĭ, A. L.; Bakeyev, N.F.

doi:10.1016/0032-3950(87)90162-6

Cited by 1 publication

(3 citation statements)

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“…1). Analysis of the X-ray patterns reveals that a sequence of spot reflections located on meridian, equator or diagonal could be attributed to X-ray scattering from the oriented layer planes [5]. It is worth mentioning that such a sequence of reflections is due to different reflection orders.…”

Section: Lmc Orientationmentioning

confidence: 99%

“…In a consideration of the LMC orientation type, one should take into account the elastic stresses arising in polymers and thereby affecting the LMC orientation [5]. It has been found that this factor comes into play for the narrow pores containing n-carbonic acids.…”

Section: Lmc Orientationmentioning

confidence: 99%

“…The structure of LMCs incorporated into polymers is known to be characterized by layers in which LMC molecules aligned parallel to each other are arranged in a definite manner with respect to the layer plane [4,5].…”

Section: Introductionmentioning

confidence: 99%

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DSC and X-ray study of structure and phase transitions of low molecular compounds incorporated into crazes

Волков

Moscvina

Аржакова

et al. 1992

Journal of Thermal Analysis

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Orientation, phase composition and phase transitions of a series of long chain low molecular weight compounds (LMC), such as heneicosane, cetyl alcohol, normal fatty acids, introduced into porous structure (crazes) of polymeric matrices oriented in liquid medium have been studied by means of DSC and SAXS techniques. Different types of LMC crystallites orientation in crazes of polymeric matrices have been observed. LMC phase state in crazes is shown to be characterized by higher stability of high-temperature polymer midifications. LMC melting temperature in crazes usually decreases as well as melting enthalpy (heat) and entropy. The origin of LMC properties changes observed is high dispersity (40-100nm) of LMC particles in crazes resulting in a marked growth of polymer/LMC interface influence on principal thermodynamic parameters of the systems studied.

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Section: Lmc Orientationmentioning

confidence: 99%

Section: Lmc Orientationmentioning

confidence: 99%