The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants

Viscosity inducing agents are commonly used to modify the rheological properties of emulsions. The objective of the study was to determine the effects of the concentration of Carbopo1 940 on the physical stability and rheological properties of palm olein-in-water emulsions prepared with Span 20/Twee...

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Main Authors:	Mohd. Nawi, Mohamed Sufian, Ahmad, Kausar
Format:	Conference or Workshop Item
Language:	English
Published:	2008
Subjects:	QD Chemistry
Online Access:	http://irep.iium.edu.my/44976/ http://irep.iium.edu.my/44976/1/Conference_MPS2008_RheologyPalmOleinEmulsionsCarbopol_kausar_20151007.pdf

id	iium-44976
recordtype	eprints
spelling	iium-449762018-04-27T01:00:59Z http://irep.iium.edu.my/44976/ The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants Mohd. Nawi, Mohamed Sufian Ahmad, Kausar QD Chemistry Viscosity inducing agents are commonly used to modify the rheological properties of emulsions. The objective of the study was to determine the effects of the concentration of Carbopo1 940 on the physical stability and rheological properties of palm olein-in-water emulsions prepared with Span 20/Tween 20 and Span 20/Tween 80. Based on the creaming behaviour and particle size analysis, 0.1 to 0.3% (w/w) of Carbopo1 940 was found to be suitable for the further stabilisation of the emulsions with Span 20/Tween 20. However, the emulsions with a combination of Carbopol 940 and Span 20/Tween 80 were not stable. Destabilisation could have resulted from the depletion of water molecules as a result of further hydration of hydrophilic Carbopol 940 and thus adversely affected the hydration of the hydrophilic moieties of the non-ionic surfactants used. This tendency is suspected to be more prominent for the Tween 80 as it is less hydrophilic than Tween 20. The stable emulsions produced exhibited viscoelastic and pseudoplastic behaviour with yield stress. Within the linear viscoelastic region, the emulsions were elastic in nature. Desired rheological properties can be obtained by changing the concentration of Carbopol 940 to make it suitable for the development of topical cream and lotion. 2008 Conference or Workshop Item NonPeerReviewed application/pdf en http://irep.iium.edu.my/44976/1/Conference_MPS2008_RheologyPalmOleinEmulsionsCarbopol_kausar_20151007.pdf Mohd. Nawi, Mohamed Sufian and Ahmad, Kausar (2008) The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants. In: 8th MPS Pharmacy Scientific Conference 2008, 15th-14th August 2008, Swiss Garden Resort & Spa, Kuantan, Pahang. (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Mohd. Nawi, Mohamed Sufian Ahmad, Kausar The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants
description	Viscosity inducing agents are commonly used to modify the rheological properties of emulsions. The objective of the study was to determine the effects of the concentration of Carbopo1 940 on the physical stability and rheological properties of palm olein-in-water emulsions prepared with Span 20/Tween 20 and Span 20/Tween 80. Based on the creaming behaviour and particle size analysis, 0.1 to 0.3% (w/w) of Carbopo1 940 was found to be suitable for the further stabilisation of the emulsions with Span 20/Tween 20. However, the emulsions with a combination of Carbopol 940 and Span 20/Tween 80 were not stable. Destabilisation could have resulted from the depletion of water molecules as a result of further hydration of hydrophilic Carbopol 940 and thus adversely affected the hydration of the hydrophilic moieties of the non-ionic surfactants used. This tendency is suspected to be more prominent for the Tween 80 as it is less hydrophilic than Tween 20. The stable emulsions produced exhibited viscoelastic and pseudoplastic behaviour with yield stress. Within the linear viscoelastic region, the emulsions were elastic in nature. Desired rheological properties can be obtained by changing the concentration of Carbopol 940 to make it suitable for the development of topical cream and lotion.
format	Conference or Workshop Item
author	Mohd. Nawi, Mohamed Sufian Ahmad, Kausar
author_facet	Mohd. Nawi, Mohamed Sufian Ahmad, Kausar
author_sort	Mohd. Nawi, Mohamed Sufian
title	The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants
title_short	The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants
title_full	The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants
title_fullStr	The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants
title_full_unstemmed	The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants
title_sort	effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants
publishDate	2008
url	http://irep.iium.edu.my/44976/ http://irep.iium.edu.my/44976/1/Conference_MPS2008_RheologyPalmOleinEmulsionsCarbopol_kausar_20151007.pdf
first_indexed	2023-09-18T21:03:58Z
last_indexed	2023-09-18T21:03:58Z
_version_	1777410809028149248

The effect of carbopol 940 on physical stability of palm olein emulsions stabilised by span and tween surfactants

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