Synthesis and Characterization of PLA-Micro-structured Hydroxyapatite Composite Films

Autor:	Andreea Madalina Pandele, Lucian Toma Ciocan, Stefan Ioan Voicu, Ionut-Cristian Radu, Florin Miculescu, Andreea Elena Constantinescu
Rok vydání:	2020
Předmět:	Materials science Morphology (linguistics) Sonication Composite number 02 engineering and technology 010402 general chemistry lcsh:Technology 01 natural sciences Article Crystallinity symbols.namesake chemistry.chemical_compound Polylactic acid General Materials Science composite films lcsh:Microscopy polylactic acid lcsh:QC120-168.85 chemistry.chemical_classification Chloroform lcsh:QH201-278.5 lcsh:T hydroxyapatite Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering lcsh:TA1-2040 symbols lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology Raman spectroscopy lcsh:TK1-9971
Zdroj:	Materials Materials, Vol 13, Iss 2, p 274 (2020) Volume 13 Issue 2
ISSN:	1996-1944
DOI:	10.3390/ma13020274
Popis:	This article presents a facile synthesis method used to obtain new composite films based on polylactic acid and micro-structured hydroxyapatite particles. The composite films were synthesized starting from a polymeric solution in chloroform (12 wt.%) in which various concentrations of hydroxyapatite (1, 2, and 4 wt.% related to polymer) were homogenously dispersed using ultrasonication followed by solvent evaporation. The synthesized composite films were morphologically (through SEM and atomic force microscopy (AFM)) and structurally (through FT-IR and Raman spectroscopy) characterized. The thermal behavior of the composite films was also determined. The SEM and AFM analyses showed the presence of micro-structured hydroxyapatite particles in the film&rsquo s structure, as well as changes in the surface morphology. There was a significant decrease in the crystallinity of the composite films compared to the pure polymer, this being explained by a decrease in the arrangement of the polymer chains and a concurrent increase in the degree of their clutter. The presence of hydroxyapatite crystals did not have a significant influence on the degradation temperature of the composite film.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d7107a52fe91ed66c73e7ffff8b136b https://doi.org/10.3390/ma13020274 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.