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Embargo period 2025-09-30
undergraduate thesis
Priprava mješavina termoplastičnog škroba iz otopine i taline
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. urn:nbn:hr:149:316986
Jarak, Andrija
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

Jarak, A. (2024). Priprava mješavina termoplastičnog škroba iz otopine i taline (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:316986

Jarak, Andrija. "Priprava mješavina termoplastičnog škroba iz otopine i taline." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:316986

Jarak, Andrija. "Priprava mješavina termoplastičnog škroba iz otopine i taline." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:316986

Jarak, A. (2024). 'Priprava mješavina termoplastičnog škroba iz otopine i taline', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:316986

Jarak A. Priprava mješavina termoplastičnog škroba iz otopine i taline [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2024 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:149:316986

A. Jarak, "Priprava mješavina termoplastičnog škroba iz otopine i taline", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:149:316986

Metadata
TitlePriprava mješavina termoplastičnog škroba iz otopine i taline
Title (english)Preparation of thermoplastic starch blends from solution and by melt mixing
AuthorAndrija Jarak
MentorElvira Vidović (mentor)
Committee memberElvira Vidović (predsjednik povjerenstva)
Committee memberMarin Kovačić (član povjerenstva)
Committee memberAndrej Vidak (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2024-09-23, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Zbog neprikladnog odlaganja polimernog otpada, dolazi do sve većeg zagađenja Zemlje i nastajanja ekoloških problema. Nerazgradivi polimeri se zadržavaju u okolišu, te ispuštanjem toksičnih tvari ugrožavaju živa bića prisutna u njemu. Zbog toga se zaziva sve veća primjera biorazgradivih polimernih materijala, koji se u okolišu razgrađuju pomoću mikroorganizama ili atmosferilija. Nerijetko određeni biorazgradivi polimer, unatoč sposobnosti razgradnje, nije primjenjiv zbog loših toplinskih i mehaničkih svojstava. Materijal traženih svojstava dobiva se pripravom polimernih mješavina dvaju ili više polimera. Konkretno u ovom radu, pripravljane su mješavine termoplastičnog škroba (TPS), dobivenog plastifikacijom običnog krumpirovog škroba, i sintetskog biorazgradivog polimera polikaprolaktona (PCL). Na uzorcima dobivenih polimernih mješavina provedena je mehanička analiza na kidalici, te toplinske metode diferencijalne pretražne kalorimetrije (DSC) i termogravimetrije (TGA). Obradom rezultata, pokazano je da se mješavine s udjelom škroba do 20% mogu koristiti kao zamjene za čisti polikaprolakton, čime se snižavaju troškovi proizvodnje a povećava biorazgradivost materijala.
Abstract (english)
Improper polymer waste disposal contributes to pollution and causes environmental problems. Non-biodegradable polymers accumulate in the environment and release toxic substances which can harm living organisms. Therefore, biodegradable polymeric materials are preferred as they can be degraded naturally by the action of microorganisms or environmental conditions. However, a biodegradable polymer often has poor mechanical or thermal properties and may not be the most suitable. For this reason, two or more polymers are mixed to make a new material with improved properties. This paper presents preparation of blends of thermoplastic starch (TPS) produced by plasticization of normal potato starch and a synthetic biodegradable polymer, polycaprolactone (PCL). Samples of these polymer blends were subjected to mechanical analysis on the universal testing machine, and differential scanning calorimetry (DSC) and thermal-gravimetric analysis (TGA). The results showed that the blend with up to 20% starch content may be used as a substitute for pure polycaprolactone, which can reduce production costs and enhance biodegradability of the material.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:316986
Study programmeTitle: Chemical Engineering - Undergraduate study
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsEmbargoed access
Embargo expiration date: 2025-09-30
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Created on2024-11-17 20:35:28