The characterization of hexagonal lyotropic liquid crystal nanostructure: effects of polymer tail length

Masalci, Özgür

doi:10.1007/s00396-022-05031-8

Cited by 6 publications

(3 citation statements)

References 52 publications

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“…When their conformation is compared with each other, the trans conformation has lower energy than the other (compared to the gauche conformation). The frequency changes seen in the C-H stretching bands provide information about the energy and the order changes accordingly [28]. As seen from Fig.…”

Section: Ftirmentioning

confidence: 98%

“…If these phases are anisotropic, they exhibit interference patterns under polarized light. These interference patterns have different morphological and optical properties and are called textures [28,29]. Changes in the structural properties, layout, and symmetries of the samples cause the textures to change.…”

Section: Pommentioning

confidence: 99%

“…Since our molecules have different head groups, the bands that provide information about the head groups have emerged at different frequency values. The interactions of anionic SDS surfactant molecules in the head group region can be determined by changes in S-O stretching bands [28,55]. For SDS, symmetric S-O stretching bands occur in the 1060 cm -1 and 1062 cm -1 regions, and antisymmetric S-O stretching bands occur in the 1208 cm -1 and 1217 cm -1 regions.…”

Section: Ftirmentioning

confidence: 99%

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Investigation of the Polymer Additive on the Lyotropic Lamellar Phase Formed by Surfactants with Different Head Groups

Cukurkent,

MASALCI

2024

Preprint

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In this study, the effect of polyvinylpyrrolidone (PVP) polymer on lyotropic lamellar phases obtained using different types of surfactants, anionic and cationic, was compared. Three different methods were used to make these comparisons. The polarized microscope (POM) method was used to observe and compare morphological changes. It was observed that the texture structures of the lyotropic lamellae phases obtained by using anionic and cationic surfactants were different from each other. Structural changes were investigated by the small-angle X-ray scattering (SAXS) method. As the polymer concentration added to the lyotropic lamellae phase(s) increased, it was determined that the structural changes of the anionic and cationic samples were different from each other. The interactions of surfactant-polymer molecules with each other and their packaging were accordingly investigated by Fourier transform infrared spectroscopy (FTIR). How the polymer was added to the lyotropic lamellae phase and how the surfactant interacted with the chain and head groups was determined by examining the frequency shifts of the methylene chains and head groups. These frequency shifts provide information about trans-gauche transformations. Both polymers and lyotropic lamellae phases have wide biological and technological uses. For this reason, their use together, that is, the interactions of polymer doped-lamellar phases, is interesting and should be understood.

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Section: Ftirmentioning

confidence: 98%

Section: Pommentioning

confidence: 99%

Section: Ftirmentioning

confidence: 99%

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