Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite

Natural rubber toughened poly lactic/graphene (PLA/NR/graphene) nanocomposites were prepared by two different processes known as in-situ melt mixing process (conventional) and integration of latex compounding - melt mixing process. These two processes were employed to compare the state of graphene d...

Full description

Saved in:

Bibliographic Details
Main Author:	Nordin, Nur Syahida Nafisah
Format:	Thesis
Language:	English
Published:	2018
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/86221/1/NurSyahidaNafisahMSChE2018.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.86221
record_format	uketd_dc
spelling	my-utm-ep.862212020-08-31T13:53:52Z Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite 2018 Nordin, Nur Syahida Nafisah TP Chemical technology Natural rubber toughened poly lactic/graphene (PLA/NR/graphene) nanocomposites were prepared by two different processes known as in-situ melt mixing process (conventional) and integration of latex compounding - melt mixing process. These two processes were employed to compare the state of graphene dispersion and distribution in the nanocomposite. The objectives of this research comprise the effect of different processing methods and graphene content on the morphology, mechanical and thermal properties of PLA/NR/graphene nanocomposite. The composition of PLA/NR blend was fixed at 80/20 wt% and the graphene content was varied at 0.1-0.4 phr. Mechanical properties were studied by tensile, flexural and impact test. The tensile and impact strength were slightly improved with increasing of graphene loading (from 0.1-0.3 phr) indicating that graphene significantly effective in increasing the mechanical properties of toughened PLA nanocomposite. The PLA/NR/graphene nanocomposite was characterized by field emission scanning electron microscopy and scanning electron microscopy. Integration of latex compounding and melt mixing process showed better graphene distribution and dispersion compared to the conventional processing method. Differential scanning calorimetry and thermogravimetric analysis were used to determine the temperature profile: glass transition temperature (Tg), melting temperature (Tm) and cold crystallization temperature (Tcc) and also to access thermal stability of the nanocomposite. The results also revealed that the PLA/NR blend was reinforced and toughened simultaneously by graphene. The simultaneous improvement in tensile strength and toughness could be attributed to the homogeneous dispersion of graphene in PLA/NR/graphene nanocomposite. The integration of latex compounding and melt mixing process had given a promising method to homogenously dispersed graphene in the polymer matrix. 2018 Thesis http://eprints.utm.my/id/eprint/86221/ http://eprints.utm.my/id/eprint/86221/1/NurSyahidaNafisahMSChE2018.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131995 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Nordin, Nur Syahida Nafisah Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite
description	Natural rubber toughened poly lactic/graphene (PLA/NR/graphene) nanocomposites were prepared by two different processes known as in-situ melt mixing process (conventional) and integration of latex compounding - melt mixing process. These two processes were employed to compare the state of graphene dispersion and distribution in the nanocomposite. The objectives of this research comprise the effect of different processing methods and graphene content on the morphology, mechanical and thermal properties of PLA/NR/graphene nanocomposite. The composition of PLA/NR blend was fixed at 80/20 wt% and the graphene content was varied at 0.1-0.4 phr. Mechanical properties were studied by tensile, flexural and impact test. The tensile and impact strength were slightly improved with increasing of graphene loading (from 0.1-0.3 phr) indicating that graphene significantly effective in increasing the mechanical properties of toughened PLA nanocomposite. The PLA/NR/graphene nanocomposite was characterized by field emission scanning electron microscopy and scanning electron microscopy. Integration of latex compounding and melt mixing process showed better graphene distribution and dispersion compared to the conventional processing method. Differential scanning calorimetry and thermogravimetric analysis were used to determine the temperature profile: glass transition temperature (Tg), melting temperature (Tm) and cold crystallization temperature (Tcc) and also to access thermal stability of the nanocomposite. The results also revealed that the PLA/NR blend was reinforced and toughened simultaneously by graphene. The simultaneous improvement in tensile strength and toughness could be attributed to the homogeneous dispersion of graphene in PLA/NR/graphene nanocomposite. The integration of latex compounding and melt mixing process had given a promising method to homogenously dispersed graphene in the polymer matrix.
format	Thesis
qualification_level	Master's degree
author	Nordin, Nur Syahida Nafisah
author_facet	Nordin, Nur Syahida Nafisah
author_sort	Nordin, Nur Syahida Nafisah
title	Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite
title_short	Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite
title_full	Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite
title_fullStr	Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite
title_full_unstemmed	Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite
title_sort	properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2018
url	http://eprints.utm.my/id/eprint/86221/1/NurSyahidaNafisahMSChE2018.pdf
_version_	1747818507796480000

Properties and characterization of poly lactic acid/natural rubber/graphene nanocomposite

Similar Items