Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films

Poly(n-butyl acrylate-co-methacrylic acid) (PBA-MAA) latex series that contained polystyrene(PS) seed was prepared by seeded emulsion polymerisation. The seed-shell nanoparticles were designed with high (PS seed) and low glass transition temperature (Tg), respectively. Two types of monomer crosslink...

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Main Author:	Rasol, Nurfadilah
Format:	Thesis
Language:	English
Published:	2019
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/86207/1/NurfadilahRasolMSChE2019.pdf
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spelling	my-utm-ep.862072020-08-30T09:07:51Z Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films 2019 Rasol, Nurfadilah TP Chemical technology Poly(n-butyl acrylate-co-methacrylic acid) (PBA-MAA) latex series that contained polystyrene(PS) seed was prepared by seeded emulsion polymerisation. The seed-shell nanoparticles were designed with high (PS seed) and low glass transition temperature (Tg), respectively. Two types of monomer crosslinkers i.e. ethylene glycol and 1,3-butanediol dimethacrylate (1,3-BDDMA) were added into the formulation to prevent the particles from agglomeration, as well as to increase the covalent-crosslinked of polymer chains. In this study, the effects of PS content, surfactant addition mode, the degree of neutralisation, and types of monomer crosslinkers on the physical and mechanical properties of samples were investigated. Analysis using dynamics light scattering showed that the addition of PS seed increased consistency of particle size. The strains of the films were improved when surfactant was added at an initial charge compared to the feeding during polymerisation. The addition of a small percentage of ionic groups zinc oxide (ZnO) and monomeric crosslinkers increased the stress and modulus of the films. By contrast, they decreased the strain and tackiness of the films. Meanwhile, spectra from Fourier transform infrared spectroscopy confirmed that the ZnO had bonded to the carboxylic groups –RCOOH. The stress-strain data showed the neutralisation at 100n was required to increase the stress-at-break up to 0.5 MPa and to decrease strain-at-break by a factor of 2. The addition of 1,3-BDDMA crosslinker had increased the stress-at-break by the factor of 1. Meanwhile, the Tg of the films did not significantly affect by the addition of crosslinkers and ZnO, as shown by differential scanning calorimetry data. 2019 Thesis http://eprints.utm.my/id/eprint/86207/ http://eprints.utm.my/id/eprint/86207/1/NurfadilahRasolMSChE2019.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:131870 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 Rasol, Nurfadilah Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films
description	Poly(n-butyl acrylate-co-methacrylic acid) (PBA-MAA) latex series that contained polystyrene(PS) seed was prepared by seeded emulsion polymerisation. The seed-shell nanoparticles were designed with high (PS seed) and low glass transition temperature (Tg), respectively. Two types of monomer crosslinkers i.e. ethylene glycol and 1,3-butanediol dimethacrylate (1,3-BDDMA) were added into the formulation to prevent the particles from agglomeration, as well as to increase the covalent-crosslinked of polymer chains. In this study, the effects of PS content, surfactant addition mode, the degree of neutralisation, and types of monomer crosslinkers on the physical and mechanical properties of samples were investigated. Analysis using dynamics light scattering showed that the addition of PS seed increased consistency of particle size. The strains of the films were improved when surfactant was added at an initial charge compared to the feeding during polymerisation. The addition of a small percentage of ionic groups zinc oxide (ZnO) and monomeric crosslinkers increased the stress and modulus of the films. By contrast, they decreased the strain and tackiness of the films. Meanwhile, spectra from Fourier transform infrared spectroscopy confirmed that the ZnO had bonded to the carboxylic groups –RCOOH. The stress-strain data showed the neutralisation at 100n was required to increase the stress-at-break up to 0.5 MPa and to decrease strain-at-break by a factor of 2. The addition of 1,3-BDDMA crosslinker had increased the stress-at-break by the factor of 1. Meanwhile, the Tg of the films did not significantly affect by the addition of crosslinkers and ZnO, as shown by differential scanning calorimetry data.
format	Thesis
qualification_level	Master's degree
author	Rasol, Nurfadilah
author_facet	Rasol, Nurfadilah
author_sort	Rasol, Nurfadilah
title	Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films
title_short	Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films
title_full	Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films
title_fullStr	Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films
title_full_unstemmed	Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films
title_sort	preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2019
url	http://eprints.utm.my/id/eprint/86207/1/NurfadilahRasolMSChE2019.pdf
_version_	1747818504598323200

Preparation and characterization of polystryrene/poly(butylacrylate methacrylate acid) core-shell nanostructured films

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