^Back To Top

Laboratory of Polymers & Biomaterials

Institute of Fundamental Technological Research

  • 1 Oliwia Jeznach as a laureate of the Kosciuszko Foundation scholarship

    It is our pleasure to inform you that our team member, Mrs. Oliwia Jeznach has become one of the laureate of scholarship granted by the Kosciuszko Foundation. Congratulations Oliwia!
    Read Me...
  • 2 Professor dr hab. Andrzej Ziabicki

    We announce with very deep regret that on March 14th, 2019 left us our great Master and Teacher - Professor dr hab. Andrzej Ziabicki.
    Read Me...
  • 3 New internschip students in our laboratory!

    As every year new internship students will join our research team! To get know who will join us this summer please see in the link below...
    Read Me...
  • 4 Polish-Israeli Conference on Electrospinning and Tissue Engineering

    It is our great pleasure to announce the 1st Polish-Israeli Conference on Electrospinning and Tissue Engineering (PICETE 2018), which will be held on 4-5th October 2018 in Warsaw, Poland, at the Institute of Fundamental Technological Research, Polish Academy of Sciences.Kindly visit the PICETE2018 conference website.
    Read Me...
  • 5 New OPUS and PRELUDIUM grant in our laboratory!

    We would like to inform that National Centre of Science granted the project of our laboratory leader, prof. Paweł Sajkiewicz and our colleague, Piotr Denis, M.Sc., in OPUS and PRELUDIUM program, respectively. Both, projects were subbmited in the ST8 category - Process and production engineering. Congratulations for the project leaders!
    Read Me...

Source of founding: National Science Centre

Project menager/ principal investigator:  Arkadiusz Gradys,Ph.D.

Significance of the project

In recent decades, it may be observed an increasing scientific and practical interest in studies on confinement effects, which manifest, with decrease in size, as deviations in the behavior as observed in bulk. Depending on system geometry, various confinement effects may be observed. One of important issues relates to the effects in phase transitions and structure formation.

Research Project Objectives

The objective of the project is to explore physical phenomena at sub-micrometer scale, specifically, to study confinement effects on phase transitions and structure properties. It is proposed to perform experimental investigations on confinement effects in quasi-one dimensional geometry- an issue which is, as yet, not well studied.  The term “quasi one-dimensional geometry” is understood as fiber / rod geometry, meaning that restriction in size is realized in two dimensions, the third dimension being considered as macroscopic.
In the frame of the project, it is proposed to investigate confinement effects on thermodynamic and kinetic parameters of phase transitions - crystallization, melting and glass transition, as well as on structure properties and its orientation. The studies will be performed using model well defined crystallizable substance consisting of linear regular chain molecules of short length unable to entangle – an oligomer. In this way, the investigated confinement effects will have only external geometrical origin, without influence of  the effects resulting from constrains related with entanglement, what is typical for long chain polymers. Condition of quasi one -dimensional geometry will be provided by direct encapsulation of a model substance inside fibers obtained by coaxial electrospinning process. The key confinement parameter, which is fiber internal thickness, will be controlled by electrospinning process parameters as well as conditions of thermal treatment of as-spun fibers.

Scientific hypothesis

There exist confinement effects in quasi one-dimensional geometry and critical sizes of confinement leading to deviation in the kinetics of phase transitions, due to restrictions in molecular mobility and diffusion, and deviation of thermodynamic parameters due to decrease in entropy related with increase in orientation of molecules and supermolecular structure, in comparison to parameters of macroscopic (bulk) systems.

COPYRIGT Laboratory of Polymers and Biomaterials IPPT PAN FREE JOOMLA TEMPLATES