AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
Rezumat articol ediţie STUDIA UNIVERSITATIS BABEŞ-BOLYAI
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Autori: MARIA RÂPĂ, PETRUȚA STOICA, ELISABETA ELENA TĂNASE, ELENA GROSU, MARIA LUNGU, RALUCA-NICOLETA DARIE, DANIELA STANCIU, MARIA SOMEȘAN, MIHAELA HETVARY.
In the last decades, the synthetic polymers are used in large scale in many areas. These macromolecular substances are usually of petroleum origin and are not biodegradable. The oil resources are limited and the use of non-biodegradable polymers causing serious environmental problems. In addition, non-biodegradable polymers are not suitable for temporary use. The advantages of synthetic polymers are obvious, including adequate physical and mechanical properties and low cost price. Natural polymers are abundant, renewable and biodegradable. Disadvantages of natural polymers refer to the decreasing of physical and mechanical properties. Mixtures of synthetic polymers with natural polymers that contain hydrolytic or enzymatic labile links show the advantage of improving the physical and mechanical properties and are biodegradable. The aim of this paper is to prepare biocomposites by melt blending of the polyvinyl alcohol (PVA) with natural polymers, such that these mixtures will provide suitable properties required for use in the medical field, respecting the environment.
Key words: synthetic polymer, biopolymer, mechanical properties, thermal properties
