Efficiency enhancement of chemical recycling process of degradable polylactic acid by employing microwave and magnetic nanoparticle catalyst

Name: Therakanya Sripho

keyword: PLA

; Chemical recycling

; Glycolysis

; Microwave irradiation

; Magnetic nano particle (MNPs)

; Microwave ovens

; Chemical plants

Abstract: The aim of this research is enhancement PLA chemical recycling efficiency. Glycolysis reaction via ethylene glycol was selected as chemical recycling method. Microwave irradiation and magnetic nano particle (MNPs) catalyst were introduced to improve the performance of glycolysis reaction. 1H-NMR, GPC, FT-IR, and SEM were used for characterization chemical structure and degree of polymerization (DP) of products. The results reveal that glycolyzed PLA (GlyPLA) is the main products from this recycling process. The reaction time can be dramatically decreased when microwave irradiation is employed. Additionally, dramatic decreasing of GlyPLA chain lengths is achieved when MNPs catalyst is introduced in the reaction. However, chemical structures of the GlyPLA are not affected by employing microwave irradiation and MNPs catalyst. Therefore, employing microwave irradiation as a heating source and MNPs as a catalyst can enhance the performance of PLA chemical recycling

Thammasat University. Thammasat University Library

Address: BANGKOK

Email: preserv@tu.ac.th

Name: Pakorn Opaprakasit

Role: advisor

Name: Atitsa Petchsuk

Role: co-advisor

Created: 2015

Modified: 2021-10-15

Issued: 2021-10-15

วิทยานิพนธ์/Thesis

application/pdf

DOI: 10.14457/TU.the.2015.26

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Engineering Technology

Grantor: Thammasat University

©copyrights Thammasat University

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