XRD, SAXS, and PALS investigations of three different polymers reinforced with tetraoctylammonium exchanged montmorillonite

Luboš JankovičInstitute of Inorganic Chemistry, Slovak Academy of Sciences, Bratislava, SlovakiaCorrespondence[email protected]

Karol VégsöInstitute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia

Peter ŠiffalovičInstitute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia

Ondrej ŠaušaInstitute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia

Lubomír ČaplovičFaculty of Materials Science and Technology, Slovak University of Technology, Trnava, Slovakia

Mária ČaplovičováSTU Centre for Nanodiagnostics, Slovak University of Technology, Bratislava, Slovakia

Rostislav MedlínNew Technologies - Research Centre, University of West Bohemia, Pilsen, Czech Republic

Peter UhlíkDepartment of Economic Geology, Comenius University, Bratislava, Slovakia

Zuzana NógellováPolymer Institute, Slovak Academy of Sciences, Bratislava, Slovakia

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ABSTRACT

Three different polymer nanocomposites were prepared using clay modified with tetraoctylammonium (4C8) surfactant. The dispersion of clay silicate layers was studied using X-ray diffraction and small-angle scattering. Free-volume cavity sizes were studied with positron annihilation lifetime spectroscopy. Scattering methods confirmed disruption of all polymer lamellae organization upon organoclay addition and the creation of partially intercalated systems for polyamide and polycaprolactone. The presence of organoclay in the polymers enlarges the lower value of average positronium lifetime τ₃ of polyamide and reduces the higher value of τ₃ for polycaprolactone and polyethylene.

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XRD, SAXS, and PALS investigations of three different polymers reinforced with tetraoctylammonium exchanged montmorillonite

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XRD, SAXS, and PALS investigations of three different polymers reinforced with tetraoctylammonium exchanged montmorillonite

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