prikaz prve stranice dokumenta Toplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina
  Download
PDF 1.72 MB
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

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

Cite this document

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

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

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

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 26 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:048168

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 26] Available at: https://urn.nsk.hr/urn:nbn:hr:149:048168

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

Metadata
TitleToplinska svojstva elektroispredenih nosača na osnovi polikaprolaktona i fibroina
Title (english)Thermal properties of electrospun scaffolds on the base of polycaprolactone and fibroin
AuthorIva Lukić
MentorEmi Govorčin Bajsić (mentor)
Committee memberEmi Govorčin Bajsić (predsjednik povjerenstva)
Committee memberBudimir Mijović (član povjerenstva)
Committee memberZlata Hrnjak-Murgić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2018-07-09, 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)
Languagecroatian
URN:NBNurn:nbn:hr:149:048168
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-05-26 12:50:28