ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends

Epoxidized natural rubber (ENR-50) has been used as a compatibilizer for natural rubber-recycled acrylonitrile-butadiene rubber (NR/NBRr) blends, vulcanized by sulfur. NBR gloves have excellent resistance to punctures, tear and many types of chemicals, while NR has good physical and mechanical prope...

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Main Authors:	Hazwani Syaza Ahmad, Hanafi Ismail, Azura Abd Rashid
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2015
Online Access:	http://journalarticle.ukm.my/8963/ http://journalarticle.ukm.my/8963/ http://journalarticle.ukm.my/8963/1/09_Hazwani_Syaza_Ahmad.pdf

id	ukm-8963
recordtype	eprints
spelling	ukm-89632016-12-14T06:48:34Z http://journalarticle.ukm.my/8963/ ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends Hazwani Syaza Ahmad, Hanafi Ismail, Azura Abd Rashid, Epoxidized natural rubber (ENR-50) has been used as a compatibilizer for natural rubber-recycled acrylonitrile-butadiene rubber (NR/NBRr) blends, vulcanized by sulfur. NBR gloves have excellent resistance to punctures, tear and many types of chemicals, while NR has good physical and mechanical properties. Incorporation of ENR-50 into the rubber blends has improved processability, stiffness, resilience and excellent oil resistance. NR/NBRr blends were prepared by two-roll mill with five different compositions with the ENR-50 content fixed at 10 phr. Cure characteristics, mechanical properties and morphology (SEM) studies were performed to determine the compatibility of NR/NBRr blends in the presence of ENR-50. The cure characteristics showed that NR/NBRr blends with the presence of ENR-50 have lower scorch time (ts2) and cure time (t90) than NR/NBRr blends without ENR-50. However, the NR/NBRr blends with ENR-50 exhibited higher minimum torque (ML) and maximum torque (MH) which indicated difficult processability of the blends after compatibilization. Incorporation of ENR-50 into NR/NBRr blends improved all the tensile properties (tensile strength, tensile modulus and elongation at break) compared with NR/NBRr blends without ENR-50. The improvement in hardness upon compatibilization is due to an increase in crosslink density. Scanning electron microscopy (SEM images) of the fracture surfaces indicates that, with the addition of ENR-50 in NR/NBRr blends, better adhesion between NR and NBRr was obtained, thus improving the compatibility of NR/NBRr blends. Universiti Kebangsaan Malaysia 2015-06 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/8963/1/09_Hazwani_Syaza_Ahmad.pdf Hazwani Syaza Ahmad, and Hanafi Ismail, and Azura Abd Rashid, (2015) ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends. Sains Malaysiana, 44 (6). pp. 835-842. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid44bil6_2015/KandunganJilid44Bil6_2015.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Epoxidized natural rubber (ENR-50) has been used as a compatibilizer for natural rubber-recycled acrylonitrile-butadiene rubber (NR/NBRr) blends, vulcanized by sulfur. NBR gloves have excellent resistance to punctures, tear and many types of chemicals, while NR has good physical and mechanical properties. Incorporation of ENR-50 into the rubber blends has improved processability, stiffness, resilience and excellent oil resistance. NR/NBRr blends were prepared by two-roll mill with five different compositions with the ENR-50 content fixed at 10 phr. Cure characteristics, mechanical properties and morphology (SEM) studies were performed to determine the compatibility of NR/NBRr blends in the presence of ENR-50. The cure characteristics showed that NR/NBRr blends with the presence of ENR-50 have lower scorch time (ts2) and cure time (t90) than NR/NBRr blends without ENR-50. However, the NR/NBRr blends with ENR-50 exhibited higher minimum torque (ML) and maximum torque (MH) which indicated difficult processability of the blends after compatibilization. Incorporation of ENR-50 into NR/NBRr blends improved all the tensile properties (tensile strength, tensile modulus and elongation at break) compared with NR/NBRr blends without ENR-50. The improvement in hardness upon compatibilization is due to an increase in crosslink density. Scanning electron microscopy (SEM images) of the fracture surfaces indicates that, with the addition of ENR-50 in NR/NBRr blends, better adhesion between NR and NBRr was obtained, thus improving the compatibility of NR/NBRr blends.
format	Article
author	Hazwani Syaza Ahmad, Hanafi Ismail, Azura Abd Rashid,
spellingShingle	Hazwani Syaza Ahmad, Hanafi Ismail, Azura Abd Rashid, ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends
author_facet	Hazwani Syaza Ahmad, Hanafi Ismail, Azura Abd Rashid,
author_sort	Hazwani Syaza Ahmad,
title	ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends
title_short	ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends
title_full	ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends
title_fullStr	ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends
title_full_unstemmed	ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends
title_sort	enr-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends
publisher	Universiti Kebangsaan Malaysia
publishDate	2015
url	http://journalarticle.ukm.my/8963/ http://journalarticle.ukm.my/8963/ http://journalarticle.ukm.my/8963/1/09_Hazwani_Syaza_Ahmad.pdf
first_indexed	2023-09-18T19:53:36Z
last_indexed	2023-09-18T19:53:36Z
_version_	1777406382046183424

ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends

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