Prof. Josef Jančář

Research Program Coordinator

Contact

Email:
Phone: +420 54114 9898, +420 54114 9310
Research group: Advanced Polymers and Composites - Josef Jančář
Department: Vedení
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6. Feb. 2019

Josef Jančář received the Brno City Prize 2018

Josef Jančář, professor at the Faculty of Chemistry, coordinator of the Advanced Materials Research Program and research group leader of the…

7. Aug. 2018

CEITEC chose the first PhD projects receiving Bridge Fund Support

BRIDGE FUND is a fund addressed to CEITEC PhD students, which aims to further promote interdisciplinary projects between Life Sciences and Material…

18. Apr. 2018

Student Petr Lepcio succeeded with his work on the aggregation of polymeric nanoparticles

Petr Lepcio is currently in the fourth year of PhD studies at CEITEC BUT. Under the leadership of Professor Josef Jančar, he is active in the group…

12. Mar. 2018

Unique hydrogel from CEITEC BUT can treat in future burns, fractures and help make chemoterapies more efficient

Lucy Vojtova and her team at CEITEC BUT have developed a unique degradable hydrogel that can effectively heal burns, can be used to fill the bones,…

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  • Mechanisms and kinetics of self-assembly of nanoparticles in hierarchical polymer composites (GA15-18495S), Czech Science Foundation - Standard Grants, 2015 - 2017
  • Effect of nanoparticles on the chain mobility and crystallization kinetics in polyolefin nanocomposites (GAP205/10/2259), Czech Science Foundation - Standard Grants, 2010 - 2013
  • Multifunctional heterogeneous materials based on synthetic polymers and biopolymers (MSM0021630501), MEYS - Institutional Research Plan, 2005 - 2011
  • Synthesis of new biomaterials and preparation of stem cell derived cells, and their aplications in for the treatment of diseases affecting human tissues derived from mesoderm: cartilage, bone, ligament and meniscus (2B06130), MEYS - Health and quality of life, 2006 - 2011
  • Effect of thermal history on morphology and fracture behavior of impact copolymers of polypropylene (GA104/07/1631), Czech Science Foundation - Standard Grants, 2007 - 2009

Adaptable engineering metamaterials

Project will focus on lightweight engineering materials fabricated by hierarchical assembly of building blocks into prescribed local architectures yielding unprecedent combination of stiffness, strength , toughness, impact resistance at low density and novel acoustic properties. Fundamental components investigated will include block copolymers and their nano-composites with controlled nanoparticle spatial organization.

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Mechanically robust lightweight metamaterials

Here we will use hierarchical polymer nano-composites (PNCs) foamed in-situ with environmentally benign supercritical CO2 directly in the deposition zone of the additive manufacturing nanotechnology (AMN). This breakthrough AMN will yield lightweight solids with multi length scale programmable hierarchical structure, customizable shapes and tunable mechanical response. By selection of polymers, nanoparticles, PNC composition, nanoparticle spatial organization, interfacial attraction, foaming process and AMN parameters, advanced low density materials will be fabricated exhibiting simultaneous enhancement of stiffness, strength, toughness and thermal stability. Selecting functional NPs will introduce electrical conductivity, super-hydrophobicity and reduced flammability. Their application areas include impact protection of space structures, integral car body panels, EMI shielding and low pressure hydrogen storage.

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Non-linear mechanical response of self-assembled polymer nanocomposites

A key obstacle in the development of complex multiscale theories lies in our current inability to directly control the structure formation at multiple hierarchically arranged length scales. Directed self-assembly of surface decorated precisely defined NPs represents means for obtaining precisely controlled spatial arrangements of NPs. No theoretical framework has been published describing the laws governing multi length scale assembly of NPs into hierarchical superstructures in polymer continua. We aim at developing experimental and theoretical foundations for novel multiscale hierarchical predictive model of relationships between structural variables, nature and kinetics of the structural hierarchy formation via self-assembly of NSBBs and the physico-chemical and mechanical properties and functions in polymer nanocomposites.

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Use of recycled PE/PP blends in engineering composites

The main objective of the proposed project is to investigate effects of structural variables such as molecular weight, supermolecular structure and interfacial tension of selected compatibilizers on the fracture behavior and environmental stability of PE/PP blends from recycled PE and PP. Principal goal of the project is the quantification of the structure – property relationships with emphasis on the molecular and supermlecular structure of the recycled PE/PP blends, interactions between PE/PP and compatibilizers and both the fracture mechanisms under both static and dynamic loading conditions and environmental stability. The results of the proposed project will enable to optimise the material’s composition with respect to the selected applications and will allow to expand application range of these materials into structural applications with greater added value.

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