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15 results on '"Marcin Struszczyk"'

1. Biological Properties of Low-Toxicity PLGA and PLGA/PHB Fibrous Nanocomposite Implants for Osseous Tissue Regeneration. Part I: Evaluation of Potential Biotoxicity

Author

Izabella Krucińska, Bogusława Żywicka, Agnieszka Komisarczyk, Maria Szymonowicz, Stanisława Kowalska, Ewa Zaczyńska, Marcin Struszczyk, Anna Czarny, Piotr Jadczyk, Barbara Umińska-Wasiluk, Zbigniew Rybak, and Marek Kowalczuk

Subjects
biotoxicity, biodegradation, cytotoxicity, genotoxicity, hemocompatability, nonwoven fabrics, bone implant, poly(, l-lactide-co-glycolide%29%22">">l-lactide-co-glycolide), synthetic poly([R,S]-3-hydroxybutyrate), encapsulated growth factor, Organic chemistry, QD241-441
Abstract

In response to the demand for new implant materials characterized by high biocompatibility and bioresorption, two prototypes of fibrous nanocomposite implants for osseous tissue regeneration made of a newly developed blend of poly(l-lactide-co-glycolide) (PLGA) and syntheticpoly([R,S]-3-hydroxybutyrate), PLGA/PHB, have been developed and fabricated. Afibre-forming copolymer of glycolide and l-lactide (PLGA) was obtained by a unique method of synthesis carried out in blocksusing Zr(AcAc)4 as an initiator. The prototypes of the implants are composed of three layers of PLGA or PLGA/PHB, nonwoven fabrics with a pore structure designed to provide the best conditions for the cell proliferation. The bioactivity of the proposed implants has been imparted by introducing a hydroxyapatite material and IGF1, a growth factor. The developed prototypes of implants have been subjected to a set of in vitro and in vivobiocompatibility tests: in vitro cytotoxic effect, in vitro genotoxicity and systemic toxicity. Rabbitsshowed no signs of negative reactionafter implantation of the experimental implant prototypes.

Published
2017
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2. Process Qualification of the Individualization of Protective Clothing Design Based on 3D Scanning Technique

Author

Grażyna Grabowska, Marcin Struszczyk, Joanna Błaszczyk, and Małgorzata Woźniakowska

Subjects
Materials Science (miscellaneous), Business and International Management, Industrial and Manufacturing Engineering, General Environmental Science
Abstract

The process of individualizing personal protective equipment (PPE) is aimed at achievingoptimal fit to the user’s body, thus maximizing comfort, especially when PPE is applied in critical conditions. The aim of the research was to confirm the possibility of implementing PPE in rea industrial conditions and to estimate the comfort of use in real conditions of use. In order to perform the last stage of the personalization procedure for firefighter suits, process qualification was carried out in an industrial environment, and the firefighter’s PPE fabricated was validated under real conditions of firefighters’ activities. The effect of implementation of the individualization procedure confirmed optimal fitting of the PPE to the individual user’s body and allowed for improvement of the comfort of use.

Published
2020

3. Effect of Accelerated Ageing on Ballistic Textiles Modified By Plasma-Assisted Chemical Vapour Deposition (PACVD)

Author

Marcin Struszczyk, Adam Puszkarz, Michał Miklas, Bożena Wilbik-Hałgas, Magdalena Cichecka, Wiesława Urbaniak–Domagała, and Izabella Krucińska

Subjects
chemistry.chemical_classification, Ultra-high-molecular-weight polyethylene, Textile, Materials science, business.industry, Materials Science (miscellaneous), Composite number, Humidity, Polymer, Chemical vapor deposition, Accelerated aging, Industrial and Manufacturing Engineering, chemistry.chemical_compound, chemistry, Deposition (phase transition), Business and International Management, Composite material, business, General Environmental Science
Abstract

The functionalisation of textile products and materials using the low temperature plasma technique is increasingly used in industrial practice, mainly because of the many benefits, often unattainable with the use of other techniques. The study focused on the modification of the composite textile materials - sheets of Ultra High Molecular Weight Polyethylene (UHMWPE) fibres (Dyneema ® SB51) by applying the surface deposition of silicone-like polymer in an environment of low temperature plasma. The aim of this study was to evaluate changes in the mechanical and physical properties of modified ballistic textiles un der simulated storage conditions in accelerated time. Based on experiences in planning the research on accelerated aging, a test programme was developed for the assessment of changes during the aging process in ballistic fibrous materials under various environmen tal conditions. The process of low temperature plasma modification affected the mechani cal properties of the ballistic composite textile materials during the accelerated ageing using temperature or temperature and humidity. The effect of the modification varied with the mechanical properties investigated.

Published
2015

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