najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2019-10-3-303-312najo-563Research ArticleCHEMISTRY AND MATERIAL SCIENCEХИМИЯ И МАТЕРИАЛОВЕДЕНИЕNano- and micro-scales structure and properties of the liquidpermeable piezoactive polyvinylidene fluoride filmsKuryndinI. S.

Bolshoy pr., 31, St. Petersburg, 199004

isk76@mail.ruDmitrievI. Yu.

Bolshoy pr., 31, St. Petersburg, 199004

ivan-dmitriev-email@yandex.ruLavrentyevV. K.

Bolshoy pr., 31, St. Petersburg, 199004

lavrentev1949@mail.ruSaprykinaN. N.

Bolshoy pr., 31, St. Petersburg, 199004

elmic@hq.macro.ruElyashevichG. K.

Bolshoy pr., 31, St. Petersburg, 199004

elya@hq.macro.ruInstitute of Macromolecular Compounds, Russian Academy of SciencesRussian Federation201907082025103303312Copyright © Kuryndin I.S., Dmitriev I.Y., Lavrentyev V.K., Saprykina N.N., Elyashevich G.K., 20252025Kuryndin I.S., Dmitriev I.Y., Lavrentyev V.K., Saprykina N.N., Elyashevich G.K.Kuryndin I.S., Dmitriev I.Y., Lavrentyev V.K., Saprykina N.N., Elyashevich G.K.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/563

Liquid-permeable piezoactive polyvinylidene fluoride films were produced as porous membranes using preparation process including melt extrusion, annealing, cold/hot extension and poling consequent operations. The effect of technological control parameter at extrusion stage (melt draw ratio) on the characteristics of the film structure (overall porosity, liquid permeability and polymorphous composition) was investigated. The values of melt draw ratio which provides the permeability to liquids were established. The structure elements of nano- and micro- levels were determined by a number of experimental techniques. It was proved that the samples contain the pores with sizes 10 – 50 nm. The dependence of polymorphous composition and content of piezoactive crystalline modification on preparation conditions was analyzed. Permeable polyvinylidene fluoride films were successfully poled, and the stable piezoelectric response of the samples was demonstrated.

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The authors declare that there are no conflicts of interest present.