Open AccessСтруктура и фазовый состав пленок, полученных методом лазерного спекания из поливинилиденфторида различных марок
Author(s) -
Е.Ю. Тарасова,
И.И. Журавлева,
И.А. Бакулин,
С.И. Кузнецов,
А.С. Панин
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.23.51777.18913
Subject(s) - materials science , porosity , polyvinylidene fluoride , polymer , laser , fluoride , composite material , degradation (telecommunications) , phase (matter) , optics , chemistry , organic chemistry , inorganic chemistry , physics , telecommunications , computer science
The processes of laser synthesis of films with a thickness of 80-230 µm from polyvinylidene fluoride of various grades are studied. It is established that the range of synthesis modes does not depend on the grades of PVDF. The content of the piezo active β-phase decreases after laser treatment, but the complete transformation of β→α does not occur. The process of thermos-oxidative degradation after laser treatment is not observed. Under the same treatment conditions, the higher the open porosity coefficient, the lower the polymer melt flow index (MFI). Depending on the MFI of the initial polymer, the selection of laser exposure modes can control the porosity of the films in the range of 26-68 %.