Samoceljenje polimernih materialov na osnovi mikrokapsul

diplomsko delo

Matevž Zupan (Author), Aleš Ručigaj (Mentor)

Abstract

V zadnjem desetletju je prišlo do porasta v razvoju in proizvodnji pametnih polimernih materialov, ki imajo zmožnost samoceljenja. Zaradi njihovih zanimivih lastnosti postajajo tovrstni materiali čedalje bolj zaželeni. Zanimanje za uporabo pametnih materialov gre zlasti na račun njihovih pozitivnih lastnosti, kot sta podaljšana življenjska doba in pa zmanjšanje stroškov povezanih z izdelavo izdelkov. Obstaja več različnih načinov samoceljenja materialov, kot sta avtonomno in neavtonomno celjenje. Trenutno najpogostejša tehnika za pripravo pametnih polimerov je mikroenkapsulacija . Mikrokapsule so majhni delci, ki so sestavljeni iz jedra, v katerem je aktivna učinkovina, in ovojnice, ki ločuje jedro od okolice. Ko se v materialu pojavi razpoka, pride do mehanske poškodbe oziroma pretrganja ovojnice. Takrat se iz mikrokapsule preko difuzije začne sproščati aktivna učinkovina, ki zapolni razpoko in povzroči zamreženje polimera na tem mestu. Vgrajevanje mikrokapsul v polimerni matriks materiala se lahko integrira v številne polimerne sisteme, zato ima tak način samoceljenja materialov velik potencial za komercialno uporabo.

Keywords

kemija polimerov;polimeri;polimerni materiali;avtonomno celjenje;neavtonomno celjenje;samoceljenje;mikroenkapsulacija;mikrokapsule;diplomska dela;

Data

Language:	Slovenian
Year of publishing:	2019
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[M. Zupan]
UDC:	678(043.2)
COBISS:	1538433475
Views:	807
Downloads:	213
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Self-healing of polymeric materials based on microcapsules
Secondary abstract:	In the last decade the development and production of self-healing polymers increased. Because of their useful properties they are becoming more and more desirable. Two main advantages of this kind of materials are long life span and low cost of repair. Today we know a few different self-healing methodologies, which can be classified as intrinsic or extrinsic. One of the most common techniques for preparing smart polymers is microencapsulation. Microcapsules are small particles made of a core material which contains healing agent and is surrounded by a coating layer which separates the core from polymer matrix. When a crack occurs in a material, it ruptures the microcapsules, leading to the release of the healing agent. The healing agent fills the crack and triggers polymerization of the material, causing its self-healing. This kind of self-healing has a huge potential in commercial use because we can integrate it in a lot of different polymeric systems.
Secondary keywords:	microencapsulation;self-healing;microcapsules;
Type (COBISS):	Bachelor thesis/paper
Study programme:	1000372
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemijsko inženirstvo
Pages:	19 str.
ID:	11228381