Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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A STUDY OF THE UHMWPE-GELS BY DIFFERENTIAL SCANNING CALORIMETRY

Maksimkin A.V. 1 Chukov D.I. 1 Stepashkin A.A. 1 Tcherdyntsev V.V. 1
1 National University of Science and Technology “MISIS”
This paper presents the results of studies of gels based on ultrahigh molecular weight polyethylene obtained by differential scanning calorimetry. It is shown that the crystal structure in the gels is depends on the concentration of the solvent and is and causes of the bimodal melting peaks. Reducing the concentration of solvent in the gel leads to crystallization of the polymer macromolecules, increases the size of the lamellar crystals and increases the overall degree of crystallinity. The greatest degree of crystallinity and the size of lamellar crystals have a gels, which was completely dried from the solvent (so-called xerogels). Results of this investigation shows the influence of the concentration of the solvent in the gel fibers to forming their optimal entanglement, which has a significant influence on the properties of the gel- spinning UHMWPE fibers.