Reduction of Offensive Odor from Natural Rubber Using Zinc-Modified Bentonite
Natural bentonite was modified with zinc ions and was used as a filler to reduce the offensive odor from raw natural rubber (NR). Characterization of filler shows the limited exchange of inherent calcium ions and the preferred adsorption of zinc ions on the surface of natural bentonite during modifi...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/9102825 |
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| _version_ | 1832556978017140736 |
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| author | Bryan B. Pajarito Kayla C. Castañeda Sofia Denise M. Jeresano Dominique Ann N. Repoquit |
| author_facet | Bryan B. Pajarito Kayla C. Castañeda Sofia Denise M. Jeresano Dominique Ann N. Repoquit |
| author_sort | Bryan B. Pajarito |
| collection | DOAJ |
| description | Natural bentonite was modified with zinc ions and was used as a filler to reduce the offensive odor from raw natural rubber (NR). Characterization of filler shows the limited exchange of inherent calcium ions and the preferred adsorption of zinc ions on the surface of natural bentonite during modification. The modification process was also accompanied by bassanite formation due to sulfate ions brought by the zinc salt. Zinc-modified bentonite demonstrates an antimicrobial effect against microorganisms that are known to degrade or produce offensive odor from raw NR. Due to its antimicrobial and adsorption properties, zinc-modified bentonite significantly reduces the offensive odor from raw NR at loadings of 2.5–7.5 phr as shown by the olfactometry test. In terms of vulcanization characteristics, the loading of zinc-modified bentonite at 7.5 phr caused a slight decrease in elastic torque and increase in scorch and curing times of NR. The hardness and tensile properties of vulcanized NR are maintained after compounding with zinc-modified bentonite at 7.5 phr. |
| format | Article |
| id | doaj-art-bdffcf48b032430a87e81f90aa0c2235 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-bdffcf48b032430a87e81f90aa0c22352025-02-03T05:44:03ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/91028259102825Reduction of Offensive Odor from Natural Rubber Using Zinc-Modified BentoniteBryan B. Pajarito0Kayla C. Castañeda1Sofia Denise M. Jeresano2Dominique Ann N. Repoquit3Polymer Research Laboratory, Department of Chemical Engineering, University of the Philippines, Diliman, Quezon City 1101, PhilippinesPolymer Research Laboratory, Department of Chemical Engineering, University of the Philippines, Diliman, Quezon City 1101, PhilippinesPolymer Research Laboratory, Department of Chemical Engineering, University of the Philippines, Diliman, Quezon City 1101, PhilippinesPolymer Research Laboratory, Department of Chemical Engineering, University of the Philippines, Diliman, Quezon City 1101, PhilippinesNatural bentonite was modified with zinc ions and was used as a filler to reduce the offensive odor from raw natural rubber (NR). Characterization of filler shows the limited exchange of inherent calcium ions and the preferred adsorption of zinc ions on the surface of natural bentonite during modification. The modification process was also accompanied by bassanite formation due to sulfate ions brought by the zinc salt. Zinc-modified bentonite demonstrates an antimicrobial effect against microorganisms that are known to degrade or produce offensive odor from raw NR. Due to its antimicrobial and adsorption properties, zinc-modified bentonite significantly reduces the offensive odor from raw NR at loadings of 2.5–7.5 phr as shown by the olfactometry test. In terms of vulcanization characteristics, the loading of zinc-modified bentonite at 7.5 phr caused a slight decrease in elastic torque and increase in scorch and curing times of NR. The hardness and tensile properties of vulcanized NR are maintained after compounding with zinc-modified bentonite at 7.5 phr.http://dx.doi.org/10.1155/2018/9102825 |
| spellingShingle | Bryan B. Pajarito Kayla C. Castañeda Sofia Denise M. Jeresano Dominique Ann N. Repoquit Reduction of Offensive Odor from Natural Rubber Using Zinc-Modified Bentonite Advances in Materials Science and Engineering |
| title | Reduction of Offensive Odor from Natural Rubber Using Zinc-Modified Bentonite |
| title_full | Reduction of Offensive Odor from Natural Rubber Using Zinc-Modified Bentonite |
| title_fullStr | Reduction of Offensive Odor from Natural Rubber Using Zinc-Modified Bentonite |
| title_full_unstemmed | Reduction of Offensive Odor from Natural Rubber Using Zinc-Modified Bentonite |
| title_short | Reduction of Offensive Odor from Natural Rubber Using Zinc-Modified Bentonite |
| title_sort | reduction of offensive odor from natural rubber using zinc modified bentonite |
| url | http://dx.doi.org/10.1155/2018/9102825 |
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