Učinak kompatibilizatora na osnovu maleinskog anhidrida na morfologiju i mehanička svojstva mješavina polietilena i otpadnog poliamidnog praha

master's thesis

• Title (english): The effect of compatibilizers based on maleic anhydride on the morphology and mechanical properties of blends of polyethylene and waste polyamide powder
• Author: Matija Novak
• Mentor: Sanja Lučić Blagojević (mentor)
• Committee member: Sanja Lučić Blagojević (predsjednik povjerenstva)
• Committee member: Vesna Ocelić Bulatović (član povjerenstva)
• Committee member: Iva Movre Šapić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2023-09-12, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

U ovom radu ispitivan je utjecaj kompatibilizatora PE-g-MA na morfologiju i mehanička svojstva mješavina polietilena (PE) i otpadnog poliamidnog praha (PA). Uzorci su pripremljeni umješavanjem na gnjetilici i prešanjem na hidrauličkoj preši. Morfologija pripremljenih uzoraka nekompatibiliziranih i kompatibiliziranih mješavina ispitivana je pretražnim elektronskim mikroskopom. Mehanička i relaksacijska svojstva ispitivana su testom jednoosnog istezanja na mehaničkoj kidalici. Dodatkom PE-g-MA kompatibilizatora u mješavinu PE/PA ne dolazi do poboljšanja morfologije. Prisutna je fazna separacija bez dobre adhezije na međupovršini PE i PA faze. Također ne dolazi do značajnog poboljšanja mehaničkih svojstava kompatibiliziranih mješavina. Prekidno istezanje i prekidno naprezanje kod većine kompatibiliziranih sustava manje je u odnosnu na nekompatibilizirane mješavine. Usprkos tome, najbolje rezultate mehaničkog ispitivanja kompatibiliziranih mješavina pokazuju mješavine s udjelom PE od 20 i 80 % što ukazuje na uspješnost kompatibilizacije u određenoj mjeri.

Abstract (english)

In this thesis, the influence of compatibilizer PE-g-MA on the morphology and mechanical properties of polyethylene (PE) and waste polyamide powder (PA) blends were investigated. Samples were prepared by mixing in a kneader and pressing with a hydraulic press. The morphology of non-compatibilized and compatibilized blends was examined using a scanning electron microscope. Mechanical and relaxation properties were tested using a uniaxial tensile test on a mechanical tear machine. The addition of the PE-g-MA compatibilizer to the PE/PA blend does not lead to an improvement in morphology. Phase separation is present without good adhesion at the interface between the PE and PA phases. Furthermore, there is no significant enhancement in the mechanical properties of the compatibilized blends. Elongation at break and breaking stress in most compatibilized systems are lower compared to non-compatibilized blends. Nevertheless, the best mechanical results of the compatibilized samples are shown by blends with a PE content of 20 and 80 %, indicating some degree of successful compatibilization.

• Keywords: kompatibilizacija; PE; PA; PE-g-MA; mehanička svojstva; morfologija
• Keywords (english): compatibilization; PE; PA; PE-g-MA; mechanical properties; morphology
• Language: croatian
• URN:NBN: urn:nbn:hr:149:761877
• Study programme: Title: 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 resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-09-21 10:58:21