Utjecaj nanopunila na biorazgradive kompozite

undergraduate thesis

• Title (english): Influence of nanofillers on biodegradable composites
• Author: Anthea Georgiev
• Mentor: Emi Govorčin Bajsić (mentor)
• Committee member: Emi Govorčin Bajsić (predsjednik povjerenstva)
• Committee member: Ljerka Kratofil Krehula (član povjerenstva)
• Committee member: Iva Movre Šapić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2022-09-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Kontinuirana isporuka E-otpada iz naftnih derivata predstavlja ekološki problem zbog bionerazgradivih polimera koji oslobađaju štetne kemikalije i otrovne plinove. U cilju rješavanja ove problematike radi se na razvoju biorazgradivih materijala na osnovi polimer/vlakana koji su biokompatibilni i razgrađuju se bez štetnog djelovanja na okoliš. Međutim, biorazgradivi materijali ne posjeduju određena svojstva kao što su fleksibilnost, dielektrična svojstva, električna svojstva, barijerna svojstva vezana za vodu i plinove. Današnja istraživanja usmjerena su na razvoj biorazgradivih kompozitnih materijala koji sadrže različite nanostrukturirane dodatke. U cilju očuvanja okoliša sve više se koriste sustavi biopolimeri/biovlakna. Nanopunila u nanokompozitnim materijalima djeluju kao aditivi i poboljšavaju različita svojstava kao što su mehanička i toplinska svojstva, otpornost na gorenje i apsorpciju vode kao i zadržavanje njihove optimalne gustoće. Primjena nanokompozita proširena je u različitim područjima zbog njihove velike površine te dobrih svojstava. U ovom radu prikazane su vrste nanokompozita na osnovi biovlakana/biopolimera i njihove karakteristike, vrste nanopunila i njihove karakteristike te su ukratko opisana različita funkcionalna svojstva nanokompozita i njihova primjena.

Abstract (english)

The continuos delivery of E-waste from petroleum-based products creates ecological and enviromental problems due to non-biodegradable polymers which release harmful chemicals and toxic gases. This results in biodegradable polymers/fibers appearance which are biocompatible and degrade in the surounding enviroments without causing any environmental pollution. However, the bio-based materials are unable to meet certain properties in the way of flexibility, dielectric properties, electrical properties, water and gas vapor barrier properties. The current day's research focus is towards the implementation of biodegradable composites properties by introducting different nanostructures. The biopolymers/biofibers are used as raw material in concern with environmetnal aspects. Nowdays researchers are supplementing a new form of materials known as nanofillers in various biopolymer-based composites in a small amount. This nanofillers will act as additives and helps in enhancing the different properties such as mechanical, thermal, flame retardancy and water absorption behaviour of the nano composite materials as well as maintaining the optimum density of them. The nanocomposites applications are extended in various sectors for the reason of higher surface area, aspect ratio and superior properties. This review outlines the types of biofibers/biopolymers and their characterization, types of nanofillers and their characterization and summarizes the various functional properties of nanocomposites with their applications.

• Keywords: biorazgradivi kompoziti; biovlakna; biopolimeri; celuloza; nanopunila
• Keywords (english): biodegradable composites; biofiber; biopolymer; cellulose; nanofillers
• Language: croatian
• URN:NBN: urn:nbn:hr:149:221167
• Study programme: Title: Materials Science and 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 resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-02-23 11:23:46