Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa

The world are facing excessive dumping of plastics wastes especially from packaging food industries. The food industries also need long shelf life as food degradation caused by the growth of microorganism, had reduced the quality of food products. Fresh food product packaging during import and expor...

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Main Author:	Mohd Isa, Siti Aishah
Format:	Thesis
Language:	English
Published:	2022
Subjects:	Chitosan
Online Access:	https://ir.uitm.edu.my/id/eprint/75817/2/75817.pdf
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id	my-uitm-ir.75817
record_format	uketd_dc
spelling	my-uitm-ir.758172023-03-31T01:04:09Z Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa 2022 Mohd Isa, Siti Aishah Chitosan The world are facing excessive dumping of plastics wastes especially from packaging food industries. The food industries also need long shelf life as food degradation caused by the growth of microorganism, had reduced the quality of food products. Fresh food product packaging during import and export process especially for fruit product need proper packaging. In this study, an antimicrobial agent and polymer which are in demand for food packaging application had been developed. This research is related to the production of an antibacterial packaging which use chitosan and cinnamaldehyde acting as antibacterial (AM) agent. Different varying compositions 5 to 15wt% of chitosan with fixed 1% cinnamaldehyde were compounded with 85-95wt% of Linear Low- Density Polyethylene (LLDPE) using Twin Screw extruder and Blown film process, to produce two different antibacterial packaging, LLDPE/Chitosan/Cinnamaldehyde and LLDPE/Chitosan. The effects of chitosan incorporation on LLDPE were tested for physical, mechanical, thermal, morphology, antibacterial and rheological behaviour. For first stage blending process, increase percentage of chitosan/LLDPE with cinnamaldehyde had resulted in increased melt flow index (MFI) than Chitosan/LLDPE blend. The MFI value showed two different composites suitable for film blowing process which are in range of 0.34 g/10min to 0.78 g/10min. In general, addition of increase chitosan in LLDPE film blend with and without cinnamaldehyde showed an increase in 21% to 32% of tensile strength and young modulus. 15wt% chitosan/LLDPE with 1% cinnamaldehyde showed highest increase in tensile strength and young modulus, and decrease in elongation at break. From Zone of inhibition test, antibacterial action were found to exhibit Gram-negative bacteria (E.coli) with the presence of chitosan in the film blend. The highest zone of inhibition was found for 5% chitosan/LLDPE film without cinnamaldehyde having zone inhibition at 11.25mm compared to 15% chitosan. 2022 Thesis https://ir.uitm.edu.my/id/eprint/75817/ https://ir.uitm.edu.my/id/eprint/75817/2/75817.pdf text en public phd doctoral Universiti Teknologi MARA (UiTM) Faculty of Applied Sciences Mohamed, Rahmah
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Mohamed, Rahmah
topic	Chitosan
spellingShingle	Chitosan Mohd Isa, Siti Aishah Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa
description	The world are facing excessive dumping of plastics wastes especially from packaging food industries. The food industries also need long shelf life as food degradation caused by the growth of microorganism, had reduced the quality of food products. Fresh food product packaging during import and export process especially for fruit product need proper packaging. In this study, an antimicrobial agent and polymer which are in demand for food packaging application had been developed. This research is related to the production of an antibacterial packaging which use chitosan and cinnamaldehyde acting as antibacterial (AM) agent. Different varying compositions 5 to 15wt% of chitosan with fixed 1% cinnamaldehyde were compounded with 85-95wt% of Linear Low- Density Polyethylene (LLDPE) using Twin Screw extruder and Blown film process, to produce two different antibacterial packaging, LLDPE/Chitosan/Cinnamaldehyde and LLDPE/Chitosan. The effects of chitosan incorporation on LLDPE were tested for physical, mechanical, thermal, morphology, antibacterial and rheological behaviour. For first stage blending process, increase percentage of chitosan/LLDPE with cinnamaldehyde had resulted in increased melt flow index (MFI) than Chitosan/LLDPE blend. The MFI value showed two different composites suitable for film blowing process which are in range of 0.34 g/10min to 0.78 g/10min. In general, addition of increase chitosan in LLDPE film blend with and without cinnamaldehyde showed an increase in 21% to 32% of tensile strength and young modulus. 15wt% chitosan/LLDPE with 1% cinnamaldehyde showed highest increase in tensile strength and young modulus, and decrease in elongation at break. From Zone of inhibition test, antibacterial action were found to exhibit Gram-negative bacteria (E.coli) with the presence of chitosan in the film blend. The highest zone of inhibition was found for 5% chitosan/LLDPE film without cinnamaldehyde having zone inhibition at 11.25mm compared to 15% chitosan.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Mohd Isa, Siti Aishah
author_facet	Mohd Isa, Siti Aishah
author_sort	Mohd Isa, Siti Aishah
title	Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa
title_short	Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa
title_full	Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa
title_fullStr	Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa
title_full_unstemmed	Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa
title_sort	mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / siti aishah mohd isa
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Applied Sciences
publishDate	2022
url	https://ir.uitm.edu.my/id/eprint/75817/2/75817.pdf
_version_	1783736085311913984

Mechanical, melt flow, morphological, thermostructural and antibacterial properties of chitosan/ linear low-density polyethylene blend for selected food (banana) packaging film / Siti Aishah Mohd Isa

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