Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina

Lukić, Iva

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master's thesis

Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina

Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. urn:nbn:hr:149:048168

Lukić, Iva

University of Zagreb
Faculty of Chemical Engineering and Technology

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APA 6th Edition

Lukić, I. (2018). Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:048168

MLA 8th Edition

Lukić, Iva. "Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:149:048168

Chicago 17th Edition

Harvard

Lukić, I. (2018). 'Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 28 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:048168

Vancouver

Lukić I. Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2018 [cited 2024 December 28] Available at: https://urn.nsk.hr/urn:nbn:hr:149:048168

IEEE

I. Lukić, "Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:149:048168

Cite this item: https://urn.nsk.hr/urn:nbn:hr:149:048168

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Title	Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina
Title (english)	Thermal properties of electrospun scaffolds on the base of polycaprolactone and fibroin
Author	Iva Lukić
Mentor	Emi Govorčin Bajsić (mentor)
Committee member	Emi Govorčin Bajsić (predsjednik povjerenstva)
Committee member	Budimir Mijović (član povjerenstva)
Committee member	Zlata Hrnjak-Murgić (član povjerenstva)
Granter	University of Zagreb Faculty of Chemical Engineering and Technology Zagreb
Defense date and country	2018-07-09, Croatia
Scientific / art field, discipline and subdiscipline	TECHNICAL SCIENCES Chemical Engineering Chemical Engineering in Material Development
Abstract	Fibroin svile stoljećima se koristi u tekstilnoj industriji kao vlakno te već desetljećima u biomedicinske svrhe kao kirurški materijal za šivanje. Zbog svojih dobrih mehaničkih svojstava, biokompatibilnosti i biorazgradljivosti dalje se razvija njegova primjena u različite svrhe. U ovom radu pripremljeni su elektroispredeni nosači na osnovi polikaprolaktona (PCL) i fibriona svile (FS) postupkom elektroispredanja. Istražen je utjecaj FS na morfološku stukturu, kemijski sastav, toplinska svojstva, toplinsku stabilnost i hidrofobnost elektroispredenih PCL/FS vlaknastih nosača SEM analizom, infracrvenom spektroskopijom (FTIR), diferencijalnom pretražnom kalorimetrijom (DSC), termogravimetrijskom analizom (TGA) te određivanjem kontaktnog kuta. Postupkom elektroispredanja dobivena je jednolična struktura PCL/FS vlaknastog nosača s tanjim promjerom vlakana i homogenom raspodjelom SF unutar vlakana. Dobiveni rezultati FTIR analize pokazuju da je fibroin svile uspješno ugrađen u elektroispredeni PCL vlaknasti nosač. Dodatkom FS povećala se hidrofilnost elektroispredenog PCL vlaknastog nosača. Rezultati dobiveni DSC tehnikom pokazali su da se dodatkom fibroina svile temperatura staklastog prijalaza povećava, dok se talište i stupanj kristalnosti smanjuje, zbog nastajanja slabije uređene kristalne strukture nastale dodatkom fibroina svile. Toplinska stabilnost određena je termogravimetrijskom analizom iz koje se vidi da se dodatkom fibroina svile smanjuje toplinska stabilnost.
Abstract (english)	For centuries silk fibroin has been used as a textile fiber. Beyond textiles, silk fibroin has also been used in biomedical applications as a surgical material for decades. Because of his good mechanical properties, biocompatibility and biodegradability silk fibroin is being further developed for various emerging. In this work, electrospun scaffolds composed of polycaprolactone (PCL) and silk fibroin (SF) were prepared by electrospinning technique. Morphology, chemical composition, thermal properties, thermal stability and hydrofobicity of the PCL/SF scaffolds were characterized to evaluate the effect of SF by means of scanning electron microscopy (SEM), Fourier transform infrared spectra (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and contact angle. Electrospinning resulted in uniform fiber morphology with thinner fibers in PCL/SF scaffolds and a homogeneous SF distribution throughout the fibers. The FTIR results showed that the silk fibroin was successfully introduced to PCL scaffolds. The hydrophilicity of PCL modified scaffolds were enhanced. Results obtained with DSC showed that with addition of silk fibroin, glass transition temperature increases, while melting temperature and degree of crystallity decreases, because of the less organized crystal structure with addition of silk fibroin. Thermal stability is determined by TGA which shows that with addition of silk fibroin thermal stability decreased.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:149:048168
Study programme	Title: Chemical Engineering - Graduate study Study programme type: university Study level: graduate Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resource	Text
File origin	Born digital
Access conditions	Open access
Terms of use
Repository	Repository of Faculty of Chemical Engineering and Technology University of Zagreb
Created on	2020-05-26 12:50:28