Pokročilé polymerní materiály a kompozit
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3D printing and post-curing optimization of photopolymerized structures: Basic concepts and effective tools for improved thermomechanical properties
(Elsevier, 2022-02-04)The final thermo-mechanical properties of structural parts fabricated by masked stereolithography (MSLA) are highly determined not only by the processing parameters, but also by the post-processing methods. Improper ... -
Harnessing light to create functional, three-dimensional polymeric materials: multitasking initiation systems as the critical key to success
(Elsevier, 2021-11-29)Nowadays, the lack of suitable photoinitiators (PI) and photoinitiating systems (PISs) represents the utmost challenge in 3D-VAT printing. High photoinitiating efficiency is needed for example in the presence of nanofillers ... -
PLA toughening via bamboo-inspired 3D printed structural design
(Elsevier, 2021-12-01)Bioinspired structures can attain mechanical properties unseen in conventional artificial materials. Specifically, the introduction of a cellular structure with a precisely designed distribution of cells, cell sizes, and ... -
Multifunctional Electrospun Nanofibers Based on Biopolymer Blends and Magnetic Tubular Halloysite for Medical Applications
(MDPI, 2021-11-09)Tubular halloysite (HNT) is a naturally occurring aluminosilicate clay with a unique combination of natural availability, good biocompatibility, high mechanical strength, and functionality. This study explored the effects ... -
Factors governing the dimensional accuracy and fracture modes under compression of regular and shifted orthogonal scaffolds
(Elsevier, 2020-04-02)Direct ink writing allows controlling the structure of tissue engineering scaffolds. The aim of this work was to study the effects of the in silico pattern design on the dimensional accuracy of tricalcium phosphate scaffolds ... -
The Effect of the Thermosensitive Biodegradable PLGA–PEG–PLGA Copolymer on the Rheological, Structural and Mechanical Properties of Thixotropic Self-Hardening Tricalcium Phosphate Cement
(MDPI, 2019-01-17)The current limitations of calcium phosphate cements (CPCs) used in the field of bone regeneration consist of their brittleness, low injectability, disintegration in body fluids and low biodegradability. Moreover, no method ... -
Green synthesis and the stablization of selenium nanoparticles using carboxylmethyl starch
(Tanger, 2020-12-28)The growing interest in biodegradable products paves the way for the safest sustainable earth. Starch is an extensively studied, cost-effective, easily accessible, and highly trusted resource to produce biodegradable ... -
In-situ self-assembly of silica nanoparticles into microfibers with potential to reinforce polymers
(Tanger, 2020-10-01)Silica nanosphere with a diameter of 10–15 nm were organized into fibers with a lenght of 15 mm and an aspect ratio of 100 by self-assembly in 1,4-dioxane. Dioxane causes a positive zeta potential on the silica surface ... -
Effect of Porosity Gradient on Mechanical Properties of Cellular Nano-Composites
(MDPI, 2020-03-01)With their hierarchical architectures incorporating gradients in composition, porosity, and orientation, natural materials have evolved optimized balance of mechanical properties. Deciphered from the structure of bamboo, ... -
Recycling possibilities of bioplastics based on PLA/PHB blends
(Elsevier, 2020-09-29)The study is focused on modelling the evaluation of recyclability of the biodegradable blend using multiple extrusion of selected composition of PLA/PHB blend which had been more deeply studied before. It was shown that ... -
Printability, Mechanical and Thermal Properties of Poly(3-Hydroxybutyrate)-Poly(Lactic Acid)-Plasticizer Blends for Three-Dimensional (3D) Printing
(MDPI, 2020-10-23)This paper investigates the effect of plasticizer structure on especially the printability and mechanical and thermal properties of poly(3-hydroxybutyrate)-poly(lactic acid)-plasticizer biodegradable blends. Three plasticizers, ... -
Dynamic Responsive Formation of Nanostructured Fibers in a Hydrogel Network: A Molecular Dynamics Study
(Frontiers Media, 2020-02-26)In an effort to study natural fiber formation, such as, e.g., spider silk, we present a model, which is capable of forming biomimetic fibrillar nanostructure from a hydrogel micellar network. The latter consists of interacting ... -
Well-Blended PCL/PEO Electrospun Nanofibers with Functional Properties Enhanced by Plasma Processing
(MDPI, 2020-06-22)Biodegradable composite nanofibers were electrospun from poly(epsilon-caprolactone) (PCL) and poly(ethylene oxide) (PEO) mixtures dissolved in acetic and formic acids. The variation of PCL:PEO concentration in the polymer ... -
Structure–Properties Relationship of Electrospun PVDF fibers
(MDPI, 2020-06-23)Electrospinning as a versatile technique producing nanofibers was employed to study the influence of the processing parameters and chemical and physical parameters of solutions on poly(vinylidene fluoride) (PVDF) fibers’ ... -
Effects of Cryopreservation on Cell Metabolic Activity and Function of Biofabricated Structures Laden with Osteoblasts
(MDPI, 2020-05-01)Biofabrication and maturation of bone constructs is a long-term task that requires a high degree of specialization. This specialization falls onto the hierarchy complexity of the bone tissue that limits the transfer of ... -
Soluble collagen dissolution and assembling in pressurized carbon dioxide water solutions
(Budapest University of Technology, 2018-02-01)Dissolution and gelation procedures have a great influence on gelation time, microstructure and mechanical properties of reconstituted collagen products. We have investigated the dissolution of atelocollagen in CO2/water ... -
The Effect of Network Solvation on the Viscoelastic Response of Polymer Hydrogels
(MDPI, 2017-08-19)The majority of investigations consider the deformation response of hydrogels, fully controlled by the deformation behavior of their polymer network, neglecting the contribution caused by the presence of water. Here, we ... -
The Effect of PLGA-PEG-PLGA Modification on the Sol-gel Transition and Degradation Properties
(Budapest University of Technology and Economics Faculty of Mechanical Engineering Department of Polymer Engineering, 2016-02-26)This paper deals with the influence of an incubation medium pH on the hydrolytic degradation of a novel thermosensitive biodegradable triblock copolymer based on hydrophilic poly(ethylene glycol) and hydrophobic copolymer ...
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