Characterisation of macrogel composition from industrial natural rubber samples: Influence of proteins on the macrogel crosslink density
The insoluble (macrogel) and soluble fractions of 11 commercial natural rubber (NR) samples (Technically specified rubber) were separated. Nitrogen titrations and lipid extractions enabled a quantitative assessment of the proteins and extractable lipids in each fraction. Swelling was measured in tet...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology and Economics
2016-05-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0006776&mi=cd |
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| author | S. Rolere C. Bottier L. Vaysse J. Sainte-Beuve F. Bonfils |
| author_facet | S. Rolere C. Bottier L. Vaysse J. Sainte-Beuve F. Bonfils |
| author_sort | S. Rolere |
| collection | DOAJ |
| description | The insoluble (macrogel) and soluble fractions of 11 commercial natural rubber (NR) samples (Technically specified rubber) were separated. Nitrogen titrations and lipid extractions enabled a quantitative assessment of the proteins and extractable lipids in each fraction. Swelling was measured in tetrahydrofuran in order to evaluate the crosslink density (Mc–1) of each macrogel. While the soluble fraction had a high lipid concentration, the majority of non-isoprene compounds of the macrogel were found to be proteins, which accounted for 4.6 to 50.8% (w/w) of the macrogel. Indeed, the macrogels contained less than 0.5% (w/w) extractable lipids. However, our results showed that the soluble fraction contained large quantities of proteins (16–66% of the nitrogen content of the raw NR sample), probably structuring microaggregates. An exponential correlation (R2 > 0.96) was found between the crosslink density and the protein concentration of macrogel, suggesting that proteins are involved in the majority of crosslinks in macrogel. |
| format | Article |
| id | doaj-art-bc62852ec1dd421dbdcc84013bd55122 |
| institution | Kabale University |
| issn | 1788-618X |
| language | English |
| publishDate | 2016-05-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-bc62852ec1dd421dbdcc84013bd551222025-08-20T03:57:44ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2016-05-0110540841910.3144/expresspolymlett.2016.38Characterisation of macrogel composition from industrial natural rubber samples: Influence of proteins on the macrogel crosslink densityS. RolereC. BottierL. VaysseJ. Sainte-BeuveF. BonfilsThe insoluble (macrogel) and soluble fractions of 11 commercial natural rubber (NR) samples (Technically specified rubber) were separated. Nitrogen titrations and lipid extractions enabled a quantitative assessment of the proteins and extractable lipids in each fraction. Swelling was measured in tetrahydrofuran in order to evaluate the crosslink density (Mc–1) of each macrogel. While the soluble fraction had a high lipid concentration, the majority of non-isoprene compounds of the macrogel were found to be proteins, which accounted for 4.6 to 50.8% (w/w) of the macrogel. Indeed, the macrogels contained less than 0.5% (w/w) extractable lipids. However, our results showed that the soluble fraction contained large quantities of proteins (16–66% of the nitrogen content of the raw NR sample), probably structuring microaggregates. An exponential correlation (R2 > 0.96) was found between the crosslink density and the protein concentration of macrogel, suggesting that proteins are involved in the majority of crosslinks in macrogel.http://www.expresspolymlett.com/letolt.php?file=EPL-0006776&mi=cdPolymer gelsNatural RubberMacrogelProteinsCrosslink density |
| spellingShingle | S. Rolere C. Bottier L. Vaysse J. Sainte-Beuve F. Bonfils Characterisation of macrogel composition from industrial natural rubber samples: Influence of proteins on the macrogel crosslink density eXPRESS Polymer Letters Polymer gels Natural Rubber Macrogel Proteins Crosslink density |
| title | Characterisation of macrogel composition from industrial natural rubber samples: Influence of proteins on the macrogel crosslink density |
| title_full | Characterisation of macrogel composition from industrial natural rubber samples: Influence of proteins on the macrogel crosslink density |
| title_fullStr | Characterisation of macrogel composition from industrial natural rubber samples: Influence of proteins on the macrogel crosslink density |
| title_full_unstemmed | Characterisation of macrogel composition from industrial natural rubber samples: Influence of proteins on the macrogel crosslink density |
| title_short | Characterisation of macrogel composition from industrial natural rubber samples: Influence of proteins on the macrogel crosslink density |
| title_sort | characterisation of macrogel composition from industrial natural rubber samples influence of proteins on the macrogel crosslink density |
| topic | Polymer gels Natural Rubber Macrogel Proteins Crosslink density |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0006776&mi=cd |
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