Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa

Buffer capacity of Delonix regia and Hevea brasiliensis are expected to be different according to species where Hevea brasiliensis contains mostly latex and Delonix regia contains mostly essential oils causing different impact and different pH value. This phenomenon leads to differing behaviour a...

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Main Author:	Vanessa, Alexander
Format:	Student Project
Language:	English
Published:	Faculty of Applied Sciences 2015
Subjects:	Plant anatomy Plant physiology Plant ecology
Online Access:	http://ir.uitm.edu.my/id/eprint/20185/ http://ir.uitm.edu.my/id/eprint/20185/2/PPb_VANESSA%20ALEXANDER%20AS%20C%2015_5.pdf

id	uitm-20185
recordtype	eprints
spelling	uitm-201852018-11-02T07:29:41Z http://ir.uitm.edu.my/id/eprint/20185/ Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa Vanessa, Alexander Plant anatomy Plant physiology Plant ecology Buffer capacity of Delonix regia and Hevea brasiliensis are expected to be different according to species where Hevea brasiliensis contains mostly latex and Delonix regia contains mostly essential oils causing different impact and different pH value. This phenomenon leads to differing behaviour and cure properties for urea formaldehyde and phenol formaldehyde. To ensure good bonding quality between resin and substrate, different glue mix formulation is needed. Both wood species has been proven to have an effect with gelation time that reduces the time taken for the curing of urea and phenol formaldehyde. Curing time of urea and phenol formaldehyde was significantly influenced by the extractive content and the pH value of both Delonix regia and Hevea brasiliensis. The pHs value obtained for Delonix regia according to samples mean value for chips are 4.79, flakes are 4.95 and sawdust are 4.74 respectively. Whereas pHs for Hevea brasiliensis according to samples of chips are 5.77, flakes are 5.84 and sawdust are 5.66. This affects the curing rate of urea formaldehyde and phenol formaldehyde by decreasing the curing time for both selected adhesives whereby the Delonix regia shows significant effect at less than' 0.05 significant for both urea formaldehyde (0.047) and phenol formaldehyde (0.005) differ with Hevea brasiliensis that shows no significant effect at more than 0.05 significant for urea formaldehyde (0.067) and phenol formaldehyde (0.205) when using T-Test Faculty of Applied Sciences 2015 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/20185/2/PPb_VANESSA%20ALEXANDER%20AS%20C%2015_5.pdf Vanessa, Alexander (2015) Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa. [Student Project] (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Plant anatomy Plant physiology Plant ecology
spellingShingle	Plant anatomy Plant physiology Plant ecology Vanessa, Alexander Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa
description	Buffer capacity of Delonix regia and Hevea brasiliensis are expected to be different according to species where Hevea brasiliensis contains mostly latex and Delonix regia contains mostly essential oils causing different impact and different pH value. This phenomenon leads to differing behaviour and cure properties for urea formaldehyde and phenol formaldehyde. To ensure good bonding quality between resin and substrate, different glue mix formulation is needed. Both wood species has been proven to have an effect with gelation time that reduces the time taken for the curing of urea and phenol formaldehyde. Curing time of urea and phenol formaldehyde was significantly influenced by the extractive content and the pH value of both Delonix regia and Hevea brasiliensis. The pHs value obtained for Delonix regia according to samples mean value for chips are 4.79, flakes are 4.95 and sawdust are 4.74 respectively. Whereas pHs for Hevea brasiliensis according to samples of chips are 5.77, flakes are 5.84 and sawdust are 5.66. This affects the curing rate of urea formaldehyde and phenol formaldehyde by decreasing the curing time for both selected adhesives whereby the Delonix regia shows significant effect at less than' 0.05 significant for both urea formaldehyde (0.047) and phenol formaldehyde (0.005) differ with Hevea brasiliensis that shows no significant effect at more than 0.05 significant for urea formaldehyde (0.067) and phenol formaldehyde (0.205) when using T-Test
format	Student Project
author	Vanessa, Alexander
author_facet	Vanessa, Alexander
author_sort	Vanessa, Alexander
title	Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa
title_short	Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa
title_full	Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa
title_fullStr	Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa
title_full_unstemmed	Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa
title_sort	buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / alexander vanessa
publisher	Faculty of Applied Sciences
publishDate	2015
url	http://ir.uitm.edu.my/id/eprint/20185/ http://ir.uitm.edu.my/id/eprint/20185/2/PPb_VANESSA%20ALEXANDER%20AS%20C%2015_5.pdf
first_indexed	2023-09-18T23:04:07Z
last_indexed	2023-09-18T23:04:07Z
_version_	1777418368480968704

Buffer capacity effects of delonix regia and hevea brasiliensis extractives on reactivity of selected adhesives / Alexander Vanessa

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