Porous Shish-Kebab Structure Prepared from Oriented UHMWPE Films by Processing in Supercritical CO2

Sergey A. Lermontov*, Aleksey V. Maksimkin, Nataliya A. Sipyagina, Tarek Dayyoub*, Alena N. Malkova, Evgeniy A. Kolesnikov, Elena A. Straumal, Inna O. Gozhikova, Saidkhodzha G. Nematulloev, Dmitry V. Telyshev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


For the first time, a highly crystalline porous shish-kebab structure with a high degree of crystallinity was obtained by using a combination of two methods for the formation of porous polymeric materials. A treatment procedure using supercritical carbon dioxide (scCO2) was carried out for oriented ultrahigh molecular weight polyethylene (UHMWPE) films, which provided special conditions for the crystallization of dissolved UHMWPE macromolecules on the surface of oriented UHMWPE crystals. The prepared porous materials were investigated by scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). The particularity of the obtained porous shish-kebab is the absence of the amorphous phase between lamellar crystals (kebabs). The obtained pores had an oval shape, and they were oriented in the orientation direction of the UHMWPE macromolecules. The pore size ranged from 0.05 µm to 4 µm. Controlling the conditions for the crystallization of the UHMWPE macromolecules using supercritical CO2 gives the possibility to control the size of both lamellar disks and pores formed.

Original languageEnglish (US)
Pages (from-to)97-104
Number of pages8
JournalChinese Journal of Polymer Science (English Edition)
Issue number1
StateAccepted/In press - 2023

Bibliographical note

Funding Information:
This work was financially supported by the Academic leadership program Priority 2030 proposed by Federal State Autonomous Educational Institution of Higher Education I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University). The preparation and modification of UHMWPE samples were financially supported by the Russian Science Foundation (No. 18-13-00145), SEM investigation was supported by the State Assignment (No. 0090-2019-0002, IPAC RAS).

Publisher Copyright:
© 2023, Chinese Chemical Society Institute of Chemistry, Chinese Academy of Sciences.


  • Porous shish-kebab structure
  • Supercritical CO

ASJC Scopus subject areas

  • General Chemical Engineering
  • Polymers and Plastics
  • Organic Chemistry


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