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master's thesis
Utjecaj udjela rižinih ljuskica na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE) / rižine ljuskice (RLJ)
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. urn:nbn:hr:149:824559
Marjanović, Valeria
University of Zagreb
Faculty of Chemical Engineering and Technology

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

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Marjanović, V. (2020). Utjecaj udjela rižinih ljuskica na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE) / rižine ljuskice (RLJ) (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:824559

Marjanović, Valeria. "Utjecaj udjela rižinih ljuskica na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE) / rižine ljuskice (RLJ)." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:824559

Marjanović, Valeria. "Utjecaj udjela rižinih ljuskica na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE) / rižine ljuskice (RLJ)." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:824559

Marjanović, V. (2020). 'Utjecaj udjela rižinih ljuskica na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE) / rižine ljuskice (RLJ)', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 14 January 2025, https://urn.nsk.hr/urn:nbn:hr:149:824559

Marjanović V. Utjecaj udjela rižinih ljuskica na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE) / rižine ljuskice (RLJ) [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2020 [cited 2025 January 14] Available at: https://urn.nsk.hr/urn:nbn:hr:149:824559

V. Marjanović, "Utjecaj udjela rižinih ljuskica na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE) / rižine ljuskice (RLJ)", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:149:824559

Metadata
TitleUtjecaj udjela rižinih ljuskica na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE) / rižine ljuskice (RLJ)
Title (english)Effect of the rice husk concentration on the thermal properties of linear low density polyethylene (LLDPE) /rice husk (RH) biocomposites
AuthorValeria Marjanović
MentorEmi Govorčin Bajsić (mentor)
Committee memberEmi Govorčin Bajsić (predsjednik povjerenstva)
Committee memberLjerka Kratofil Krehula (član povjerenstva)
Committee memberMirela Leskovac (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2020-07-15, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Polietilen (PE) jedan je od najjednostavnijih i najpoznatijih polimernih materijala sa širokom primjenom. Linearni polietilen niske gustoće (LLDPE) predstavnik je sintetskog ambalažnog materijala te se najčešće koristi kao ambalaža za pakiranje hrane ili u obliku vrećica. Cilj ovog rada bio je ispitati utjecaj udjela rižinih ljuskica i punila mTiO2 na toplinska svojstva biokompozita linearni polietilen niske gustoće (LLDPE)/rižine ljuskice (RLJ). Rižine ljuskice su nusproizvod nastao preradom riže koji se odvaja od riže tijekom procesa mljevenja te zbog svojih svojstava može imati široku primjenu. Dodatak RLJ u polimernu matricu doprinosi biorazgradnji, maloj težini, žilavosti i otpornosti na vremenske uvjete. Uz rižine ljuskice dodan je i rutil (mTiO2) koji je jedan od najpoznatijih punila zbog svojih izvrsnih svojstva kao što je stabilnost i otpornost pri visokim temperaturama. Biokompoziti LLDPE/RLJ/TiO2 pripremljeni su umješavanjem RLJ u udjelu od 10, 20, 30, 40 i 50 mas % i 5 mas % mTiO2 u čisti LLDPE u Brabender gnjetilici. Utjecaj udjela RLJ i mTiO2 na fazne prijelaze određen je DSC tehnikom dok je toplinska stabilnost ispitana TGA tehnikom u biokompozitima LLDPE/RLJ/TiO2. Na osnovi DSC rezultata dobivenih za LLDPE/RLJ/TiO2 biokompozite promjene u temperaturama taljenja i kristalizacije ukazuju da postoji određeni stupanj interakcija između LLDPE – a, RLJ i mTiO2. TGA rezultati pokazuju bolju toplinsku stabilnost LLDPE – a dodatkom mTiO2.
Abstract (english)
Polyethylene (PE) is one of the simplest and well-known polymeric material with widely used. Linear low-density polyethylene (LLDPE) is a synthetic polymer most commonly used in food packaging or plastic bag production. The aim of this study was to examine the influence of the rice husks content and mTiO2 on the thermal properties of linear low densitiy polyethylene (LLDPE)/rice husks (RH)/TiO2 biocomposite and it can be widely used due to its properties. The incorporation of RH into polymer matrices provides advantageous characteristics, such as biodegradability, light weight, toughness, and resistance to weathering. In addition to rice husks, rutile (mTiO2) was added, which is one of the most famous fillers due to its excellent properties such as stability and resistance to high temperatures. LLDPE/RH/TiO2 biocomposites were prepared by mixing RH in content of 10, 20, 30, 40 and 50 wt % of RH and 5 wt % of mTiO2 in the neat LLDPE in a Brabender mixer. By DSC techniques phase transitions while by TGA technique the thermal stability of the LLDPE/RH/TiO2 biocomposites were obtained with the respect of RH content and addition of mTiO2. According to DSC results for LLDPE/RH/TiO2 biocomposites changes in the melting (Tm) and crystallisation (Tc) temperature indicated that there was some degree of interaction between LLDPE, RH and mTiO2. The TGA results show that the LLDPE is more thermally stable with addition of mTiO2.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:824559
Study programmeTitle: Materials Science and 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
Embargo expiration date: 2020-07-15
Terms of useLicence In copyright icon
Created on2022-03-06 14:39:49