Low temperature degradation and characterization of natural rubber
Low temperature degradation of natural rubber was performed with potassium persulfate (K 2S 2O 8, KPS) in the latex stage at 30 °C to accomplish a good processability of the rubber. Various grades of natural rubbers were used as a source rubber. Gel content, molecular weight and chemical structure o...
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| Veröffentlicht in: | Polymer degradation and stability 2011-11, Vol.96 (11), p.1989-1995 |
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| container_end_page | 1995 |
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| container_issue | 11 |
| container_start_page | 1989 |
| container_title | Polymer degradation and stability |
| container_volume | 96 |
| creator | Chaikumpollert, Oraphin Sae-Heng, Kewwarin Wakisaka, Osamu Mase, Akio Yamamoto, Yoshimasa Kawahara, Seiichi |
| description | Low temperature degradation of natural rubber was performed with potassium persulfate (K
2S
2O
8, KPS) in the latex stage at 30
°C to accomplish a good processability of the rubber. Various grades of natural rubbers were used as a source rubber. Gel content, molecular weight and chemical structure of the rubbers were characterized by swelling method, size exclusion chromatography and
1H NMR spectroscopy, respectively. The well characterized natural rubber was subjected to oxidative degradation with KPS at 30
°C. Mooney viscosity decreased when the latex was degraded with 1.0
phr of KPS and it was dependent upon the amount of KPS. Molecular weight and gel content of the degraded natural rubber were about one-half as low as those of the source rubber. Chemical structure of the rubber was analyzed through Fourier transform infrared and
1H NMR spectroscopic methods. The degraded natural rubber was found to contain carbonyl and formyl groups as an evidence of the oxidative degradation. Tensile strength of a vulcanizate prepared from the degraded natural rubber was the same as that prepared from the source rubber, even though the gel content and the molecular weight of the degraded rubber were distinguished from those of the source rubber. |
| doi_str_mv | 10.1016/j.polymdegradstab.2011.08.010 |
| format | Article |
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2S
2O
8, KPS) in the latex stage at 30
°C to accomplish a good processability of the rubber. Various grades of natural rubbers were used as a source rubber. Gel content, molecular weight and chemical structure of the rubbers were characterized by swelling method, size exclusion chromatography and
1H NMR spectroscopy, respectively. The well characterized natural rubber was subjected to oxidative degradation with KPS at 30
°C. Mooney viscosity decreased when the latex was degraded with 1.0
phr of KPS and it was dependent upon the amount of KPS. Molecular weight and gel content of the degraded natural rubber were about one-half as low as those of the source rubber. Chemical structure of the rubber was analyzed through Fourier transform infrared and
1H NMR spectroscopic methods. The degraded natural rubber was found to contain carbonyl and formyl groups as an evidence of the oxidative degradation. Tensile strength of a vulcanizate prepared from the degraded natural rubber was the same as that prepared from the source rubber, even though the gel content and the molecular weight of the degraded rubber were distinguished from those of the source rubber.</description><identifier>ISSN: 0141-3910</identifier><identifier>EISSN: 1873-2321</identifier><identifier>DOI: 10.1016/j.polymdegradstab.2011.08.010</identifier><identifier>CODEN: PDSTDW</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; chemical structure ; Degradation ; Exact sciences and technology ; Fourier transforms ; gel chromatography ; gels ; Latex ; Molecular structure ; Molecular weight ; Natural polymers ; Natural rubber ; NMR ; nuclear magnetic resonance spectroscopy ; Oxidative degradation ; Physicochemistry of polymers ; potassium ; Rubber ; Size exclusion chromatography ; temperature ; tensile strength ; viscosity</subject><ispartof>Polymer degradation and stability, 2011-11, Vol.96 (11), p.1989-1995</ispartof><rights>2011 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c456t-8335b5cb8ac7c6a1fe98a00b4465ef213a4fd1f44cdae611d5982de0d5a5ce1b3</citedby><cites>FETCH-LOGICAL-c456t-8335b5cb8ac7c6a1fe98a00b4465ef213a4fd1f44cdae611d5982de0d5a5ce1b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.polymdegradstab.2011.08.010$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24579390$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Chaikumpollert, Oraphin</creatorcontrib><creatorcontrib>Sae-Heng, Kewwarin</creatorcontrib><creatorcontrib>Wakisaka, Osamu</creatorcontrib><creatorcontrib>Mase, Akio</creatorcontrib><creatorcontrib>Yamamoto, Yoshimasa</creatorcontrib><creatorcontrib>Kawahara, Seiichi</creatorcontrib><title>Low temperature degradation and characterization of natural rubber</title><title>Polymer degradation and stability</title><description>Low temperature degradation of natural rubber was performed with potassium persulfate (K
2S
2O
8, KPS) in the latex stage at 30
°C to accomplish a good processability of the rubber. Various grades of natural rubbers were used as a source rubber. Gel content, molecular weight and chemical structure of the rubbers were characterized by swelling method, size exclusion chromatography and
1H NMR spectroscopy, respectively. The well characterized natural rubber was subjected to oxidative degradation with KPS at 30
°C. Mooney viscosity decreased when the latex was degraded with 1.0
phr of KPS and it was dependent upon the amount of KPS. Molecular weight and gel content of the degraded natural rubber were about one-half as low as those of the source rubber. Chemical structure of the rubber was analyzed through Fourier transform infrared and
1H NMR spectroscopic methods. The degraded natural rubber was found to contain carbonyl and formyl groups as an evidence of the oxidative degradation. Tensile strength of a vulcanizate prepared from the degraded natural rubber was the same as that prepared from the source rubber, even though the gel content and the molecular weight of the degraded rubber were distinguished from those of the source rubber.</description><subject>Applied sciences</subject><subject>chemical structure</subject><subject>Degradation</subject><subject>Exact sciences and technology</subject><subject>Fourier transforms</subject><subject>gel chromatography</subject><subject>gels</subject><subject>Latex</subject><subject>Molecular structure</subject><subject>Molecular weight</subject><subject>Natural polymers</subject><subject>Natural rubber</subject><subject>NMR</subject><subject>nuclear magnetic resonance spectroscopy</subject><subject>Oxidative degradation</subject><subject>Physicochemistry of polymers</subject><subject>potassium</subject><subject>Rubber</subject><subject>Size exclusion chromatography</subject><subject>temperature</subject><subject>tensile strength</subject><subject>viscosity</subject><issn>0141-3910</issn><issn>1873-2321</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqNkMFu2zAMhoVhBZa1e4b5EvRkT7Qkxz700BVdViDADl3OAi1RmQLHSiWnQ_v0s-Fgh57KCwHi40_iY2wJvAAO1bd9cQzdy8HSLqJNA7ZFyQEKXhcc-Ae2gHol8lKU8JEtOEjIRQP8E_uc0p6PJRUs2PdN-JsNdDhSxOEUKZvTcPChz7C3mfmDEc1A0b_Ow-CyfkKxy-KpbSlesQuHXaIv537Jtj_uf9_9zDe_1g93t5vcSFUNeS2EapVpazQrUyE4amrkvJWyUuRKECidBSelsUgVgFVNXVriVqEyBK24ZNdz7jGGpxOlQR98MtR12FM4Jd2UlSiVrORI3sykiSGlSE4foz9gfNHA9aRO7_UbdXpSp3mtR3Xj_vJ8CZPBzkXsjU__Q0qpVo1oJu7rzDkMGndxZLaPY1A12l0JLiZiPRM0inn2FHUynnpD1kcyg7bBv_Onf12nmLE</recordid><startdate>20111101</startdate><enddate>20111101</enddate><creator>Chaikumpollert, Oraphin</creator><creator>Sae-Heng, Kewwarin</creator><creator>Wakisaka, Osamu</creator><creator>Mase, Akio</creator><creator>Yamamoto, Yoshimasa</creator><creator>Kawahara, Seiichi</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20111101</creationdate><title>Low temperature degradation and characterization of natural rubber</title><author>Chaikumpollert, Oraphin ; Sae-Heng, Kewwarin ; Wakisaka, Osamu ; Mase, Akio ; Yamamoto, Yoshimasa ; Kawahara, Seiichi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c456t-8335b5cb8ac7c6a1fe98a00b4465ef213a4fd1f44cdae611d5982de0d5a5ce1b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>chemical structure</topic><topic>Degradation</topic><topic>Exact sciences and technology</topic><topic>Fourier transforms</topic><topic>gel chromatography</topic><topic>gels</topic><topic>Latex</topic><topic>Molecular structure</topic><topic>Molecular weight</topic><topic>Natural polymers</topic><topic>Natural rubber</topic><topic>NMR</topic><topic>nuclear magnetic resonance spectroscopy</topic><topic>Oxidative degradation</topic><topic>Physicochemistry of polymers</topic><topic>potassium</topic><topic>Rubber</topic><topic>Size exclusion chromatography</topic><topic>temperature</topic><topic>tensile strength</topic><topic>viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chaikumpollert, Oraphin</creatorcontrib><creatorcontrib>Sae-Heng, Kewwarin</creatorcontrib><creatorcontrib>Wakisaka, Osamu</creatorcontrib><creatorcontrib>Mase, Akio</creatorcontrib><creatorcontrib>Yamamoto, Yoshimasa</creatorcontrib><creatorcontrib>Kawahara, Seiichi</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Polymer degradation and stability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chaikumpollert, Oraphin</au><au>Sae-Heng, Kewwarin</au><au>Wakisaka, Osamu</au><au>Mase, Akio</au><au>Yamamoto, Yoshimasa</au><au>Kawahara, Seiichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Low temperature degradation and characterization of natural rubber</atitle><jtitle>Polymer degradation and stability</jtitle><date>2011-11-01</date><risdate>2011</risdate><volume>96</volume><issue>11</issue><spage>1989</spage><epage>1995</epage><pages>1989-1995</pages><issn>0141-3910</issn><eissn>1873-2321</eissn><coden>PDSTDW</coden><abstract>Low temperature degradation of natural rubber was performed with potassium persulfate (K
2S
2O
8, KPS) in the latex stage at 30
°C to accomplish a good processability of the rubber. Various grades of natural rubbers were used as a source rubber. Gel content, molecular weight and chemical structure of the rubbers were characterized by swelling method, size exclusion chromatography and
1H NMR spectroscopy, respectively. The well characterized natural rubber was subjected to oxidative degradation with KPS at 30
°C. Mooney viscosity decreased when the latex was degraded with 1.0
phr of KPS and it was dependent upon the amount of KPS. Molecular weight and gel content of the degraded natural rubber were about one-half as low as those of the source rubber. Chemical structure of the rubber was analyzed through Fourier transform infrared and
1H NMR spectroscopic methods. The degraded natural rubber was found to contain carbonyl and formyl groups as an evidence of the oxidative degradation. Tensile strength of a vulcanizate prepared from the degraded natural rubber was the same as that prepared from the source rubber, even though the gel content and the molecular weight of the degraded rubber were distinguished from those of the source rubber.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.polymdegradstab.2011.08.010</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0141-3910 |
| ispartof | Polymer degradation and stability, 2011-11, Vol.96 (11), p.1989-1995 |
| issn | 0141-3910 1873-2321 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_926325464 |
| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences chemical structure Degradation Exact sciences and technology Fourier transforms gel chromatography gels Latex Molecular structure Molecular weight Natural polymers Natural rubber NMR nuclear magnetic resonance spectroscopy Oxidative degradation Physicochemistry of polymers potassium Rubber Size exclusion chromatography temperature tensile strength viscosity |
| title | Low temperature degradation and characterization of natural rubber |
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