Tensile and structural properties of natural rubber vulcanizates with different mastication times
Abstract Mastication reduced the molecular weight of natural rubber (NR). This would affect the tensile properties and strain-induced crystallization of the rubber vulcanizates due to the structural changes of the rubber molecules. In this study, influences of mastication time on tensile response, d...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Polímeros
2021-05-01
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| Series: | Polímeros |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282021000100403&tlng=en |
| _version_ | 1818951645480878080 |
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| author | Nabil Hayeemasae Siriwat Soontaranon Mohamad Syahmie Mohamad Rasidi Abdulhakim Masa |
| author_facet | Nabil Hayeemasae Siriwat Soontaranon Mohamad Syahmie Mohamad Rasidi Abdulhakim Masa |
| author_sort | Nabil Hayeemasae |
| collection | DOAJ |
| description | Abstract Mastication reduced the molecular weight of natural rubber (NR). This would affect the tensile properties and strain-induced crystallization of the rubber vulcanizates due to the structural changes of the rubber molecules. In this study, influences of mastication time on tensile response, deformation-induced crystallization, and structural effects of crosslinked NR were investigated. The crystallization behavior and structural changes during stretching were studied by means of wide angle X-ray scattering (WAXS) and small angle X-ray scattering (SAXS). Increased mastication time significantly affected modulus at specified strain and upturn point of strain-induced crystallization of the crosslinked samples while the tensile strength was influenced slightly by mastication. During stretching, degree of crystallinity at given strain was found to decrease with increasing mastication time, while the crystallite size was reduced. Moreover, the size of crosslinked network structures induced by crosslinking also decreased slightly with increasing mastication time, as suggested by SAXS measurement. |
| first_indexed | 2024-12-20T09:37:47Z |
| format | Article |
| id | doaj.art-79b0810679e8479c841f94f0abe592f6 |
| institution | Directory Open Access Journal |
| issn | 1678-5169 |
| language | English |
| last_indexed | 2024-12-20T09:37:47Z |
| publishDate | 2021-05-01 |
| publisher | Associação Brasileira de Polímeros |
| record_format | Article |
| series | Polímeros |
| spelling | doaj.art-79b0810679e8479c841f94f0abe592f62022-12-21T19:44:57ZengAssociação Brasileira de PolímerosPolímeros1678-51692021-05-0131110.1590/0104-1428.09120Tensile and structural properties of natural rubber vulcanizates with different mastication timesNabil Hayeemasaehttps://orcid.org/0000-0002-9924-582XSiriwat SoontaranonMohamad Syahmie Mohamad RasidiAbdulhakim Masahttps://orcid.org/0000-0002-0577-4844Abstract Mastication reduced the molecular weight of natural rubber (NR). This would affect the tensile properties and strain-induced crystallization of the rubber vulcanizates due to the structural changes of the rubber molecules. In this study, influences of mastication time on tensile response, deformation-induced crystallization, and structural effects of crosslinked NR were investigated. The crystallization behavior and structural changes during stretching were studied by means of wide angle X-ray scattering (WAXS) and small angle X-ray scattering (SAXS). Increased mastication time significantly affected modulus at specified strain and upturn point of strain-induced crystallization of the crosslinked samples while the tensile strength was influenced slightly by mastication. During stretching, degree of crystallinity at given strain was found to decrease with increasing mastication time, while the crystallite size was reduced. Moreover, the size of crosslinked network structures induced by crosslinking also decreased slightly with increasing mastication time, as suggested by SAXS measurement.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282021000100403&tlng=enmasticationnatural rubberstrain-induced crystallizationtensile properties |
| spellingShingle | Nabil Hayeemasae Siriwat Soontaranon Mohamad Syahmie Mohamad Rasidi Abdulhakim Masa Tensile and structural properties of natural rubber vulcanizates with different mastication times Polímeros mastication natural rubber strain-induced crystallization tensile properties |
| title | Tensile and structural properties of natural rubber vulcanizates with different mastication times |
| title_full | Tensile and structural properties of natural rubber vulcanizates with different mastication times |
| title_fullStr | Tensile and structural properties of natural rubber vulcanizates with different mastication times |
| title_full_unstemmed | Tensile and structural properties of natural rubber vulcanizates with different mastication times |
| title_short | Tensile and structural properties of natural rubber vulcanizates with different mastication times |
| title_sort | tensile and structural properties of natural rubber vulcanizates with different mastication times |
| topic | mastication natural rubber strain-induced crystallization tensile properties |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282021000100403&tlng=en |
| work_keys_str_mv | AT nabilhayeemasae tensileandstructuralpropertiesofnaturalrubbervulcanizateswithdifferentmasticationtimes AT siriwatsoontaranon tensileandstructuralpropertiesofnaturalrubbervulcanizateswithdifferentmasticationtimes AT mohamadsyahmiemohamadrasidi tensileandstructuralpropertiesofnaturalrubbervulcanizateswithdifferentmasticationtimes AT abdulhakimmasa tensileandstructuralpropertiesofnaturalrubbervulcanizateswithdifferentmasticationtimes |