Hydrophilization of polypropylene films by poly(ethylene oxide) via intercrystallite crazing

Yarysheva, A. Yu.; Долгова, А.А.; Yarysheva, L. M.; Аржакова, О.В.

doi:10.1016/j.mencom.2020.07.035

Cited by 10 publications

(3 citation statements)

References 16 publications

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“…Hence, this process is accompanied by the penetration of PEO into as‐formed porous structure of the host PP matrix, and this fact is directly proved by the weight uptake of the samples after the removal of the PALE. The problems concerning the penetration of PEO macromolecules into the porous PP matrix prepared via EC has been studied in detail 44 . Figure 2a presents the content of PEO with different molecular masses in the host PP matrixes plotted against the tensile strain ε.…”

Section: Resultsmentioning

confidence: 99%

“…The dependence of the distribution coefficient (ratio between PEO concentrations in pores and in the feed solution) on the pore radius was reported in Ref. 44. When interaction between macromolecules and pore walls is absent, the distribution coefficient is less than unity due to the reduced entropy upon penetration of macromolecules into nanopores.…”

Section: Preparation Of Pp-peo Nanocomposites Via Ecmentioning

confidence: 89%

“…The problems concerning the penetration of PEO macromolecules into the porous PP matrix prepared via EC has been studied in detail. 44 Figure 2a presents the content of PEO with different molecular masses in the host PP matrixes plotted against the tensile strain ε. As follows from Figure 1b, with increasing tensile strain ε, porosity increases and the PEO content in the PP-PEO composite becomes higher.…”

Section: Preparation Of Pp-peo Nanocomposites Via Ecmentioning

confidence: 99%

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Unique structure and new thermophysical properties of poly(ethylene oxide) in nanocomposites based on nanoporous polypropylene matrices

Yarysheva

Bakirov

Yarysheva

et al. 2022

J of Applied Polymer Sci

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Polypropylene (PP)−poly(ethylene oxide) (PEO) nanocomposites were prepared by tensile drawing of PP films in water–ethanol solutions containing PEO with molecular masses of 4, 20, and 200 kDa via environmental crazing (EC). EC of PP films is accompanied by the development of nanoporous structure, which is loaded with the PEO component. The content of PEO in the PP − PEO nanocomposites can achieve 40%. Crystallization of PEO within the nanoporous PP matrix proceeds under the conditions of the confined space: as a result, the degree of crystallinity and melting temperature of PEO are markedly reduced. This effect appears to be more pronounced as the molecular mass of PEO increases. The direction of orientation of the PEO crystalline lamellae also depends on the molecular mass of PEO. The prepared PP‐PEO composites with new thermophysical properties of PEO can be used as gas‐separation membranes as well as in microelectronics and electrochemical devices.

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Section: Resultsmentioning

confidence: 99%

Section: Preparation Of Pp-peo Nanocomposites Via Ecmentioning

confidence: 89%

Section: Preparation Of Pp-peo Nanocomposites Via Ecmentioning

confidence: 99%

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