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...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Universiti Kebangsaan Malaysia
2015
|
Online Access: | http://journalarticle.ukm.my/8963/1/09_Hazwani_Syaza_Ahmad.pdf |
_version_ | 1796930881170964480 |
---|---|
author | Hazwani Syaza Ahmad, Hanafi Ismail, Azura Abd Rashid, |
author_facet | Hazwani Syaza Ahmad, Hanafi Ismail, Azura Abd Rashid, |
author_sort | Hazwani Syaza Ahmad, |
collection | UKM |
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. |
first_indexed | 2024-03-06T04:09:45Z |
format | Article |
id | ukm.eprints-8963 |
institution | Universiti Kebangsaan Malaysia |
language | English |
last_indexed | 2024-03-06T04:09:45Z |
publishDate | 2015 |
publisher | Universiti Kebangsaan Malaysia |
record_format | dspace |
spelling | ukm.eprints-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 |
spellingShingle | Hazwani Syaza Ahmad, Hanafi Ismail, Azura Abd Rashid, ENR-50 compatibilized natural rubber/recycled acrylonitrile-butadiene rubber blends |
title | 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_short | ENR-50 compatibilized natural rubber/recycled
acrylonitrile-butadiene rubber blends |
title_sort | enr 50 compatibilized natural rubber recycled acrylonitrile butadiene rubber blends |
url | http://journalarticle.ukm.my/8963/1/09_Hazwani_Syaza_Ahmad.pdf |
work_keys_str_mv | AT hazwanisyazaahmad enr50compatibilizednaturalrubberrecycledacrylonitrilebutadienerubberblends AT hanafiismail enr50compatibilizednaturalrubberrecycledacrylonitrilebutadienerubberblends AT azuraabdrashid enr50compatibilizednaturalrubberrecycledacrylonitrilebutadienerubberblends |