Two‐Cycle Strain‐Induced Crystallization Behavior of Peroxide Cross‐Linked Solid Guayule Natural Rubber
Abstract Peroxide cross‐linked guayule natural rubbers (P‐gGR) are prepared from non‐acetone‐extracted solid green guayule natural rubber (gGR) made by drying latex. Tensile and dynamic mechanical properties of P‐gGR samples of three different network chain densities are characterized. All P‐gGR sam...
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Wiley-VCH
2025-06-01
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| Series: | Macromolecular Materials and Engineering |
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| Online Access: | https://doi.org/10.1002/mame.202400439 |
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| author | Preeyanuch Junkong Takumi Ohashi Treethip Phakkeeree Kosuke Miyaji Shotaro Iwasaki Katrina Cornish Yuko Ikeda |
| author_facet | Preeyanuch Junkong Takumi Ohashi Treethip Phakkeeree Kosuke Miyaji Shotaro Iwasaki Katrina Cornish Yuko Ikeda |
| author_sort | Preeyanuch Junkong |
| collection | DOAJ |
| description | Abstract Peroxide cross‐linked guayule natural rubbers (P‐gGR) are prepared from non‐acetone‐extracted solid green guayule natural rubber (gGR) made by drying latex. Tensile and dynamic mechanical properties of P‐gGR samples of three different network chain densities are characterized. All P‐gGR samples demonstrate highly reproducible tensile behaviors under two repeated cycles. For the first time, strain‐induced crystallization (SIC) behaviors of P‐gGR are measured with synchrotron wide‐angle X‐ray diffraction measurements under two repeated cycles by exposing the incident beam for 70 ms every 3 s. Highly reproducible SIC phenomena are observed, and apparent crystallite sizes, average volumes, indexes of average number, and orientation fluctuations of crystallites are confirmed to not change significantly during cyclic deformation. Non‐rubber components such as phospholipids, glycolipids, fatty acids, esters, sterols, and terpenes in gGR barely inhibit the second SIC of the P‐gGR and do not cause deterioration of its mechanical properties. The reproducibility of cyclic stress–strain curves and cyclic SIC behavior of the P‐gGR sample is ascribed to the thermodynamically stable peroxide cross‐linking network. As a viable alternative to Hevea natural rubber in the rubber industry, these findings on gGR provide valuable insights for manufacturing both conventional and high‐quality products. |
| format | Article |
| id | doaj-art-c1690abb9ea74b3485ae40ca6c2d43d4 |
| institution | DOAJ |
| issn | 1438-7492 1439-2054 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Wiley-VCH |
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| series | Macromolecular Materials and Engineering |
| spelling | doaj-art-c1690abb9ea74b3485ae40ca6c2d43d42025-08-20T03:21:23ZengWiley-VCHMacromolecular Materials and Engineering1438-74921439-20542025-06-013106n/an/a10.1002/mame.202400439Two‐Cycle Strain‐Induced Crystallization Behavior of Peroxide Cross‐Linked Solid Guayule Natural RubberPreeyanuch Junkong0Takumi Ohashi1Treethip Phakkeeree2Kosuke Miyaji3Shotaro Iwasaki4Katrina Cornish5Yuko Ikeda6Faculty of Science Mahidol University Ratchathewi Bangkok 10400 ThailandGraduate School of Science and Technology Kyoto Institute of Technology Matsugasaki Sakyo Kyoto 6068585 JapanGraduate School of Science and Technology Kyoto Institute of Technology Matsugasaki Sakyo Kyoto 6068585 JapanGraduate School of Science and Technology Kyoto Institute of Technology Matsugasaki Sakyo Kyoto 6068585 JapanSchool of Science and Technology Kyoto Institute of Technology Matsugasaki Sakyo Kyoto 6068585 JapanU.S. Arid Land Agricultural Research Center Maricopa AZ 85138 USAResearch Institute for Production Development Shimogamo Sakyo Kyoto 6060805 JapanAbstract Peroxide cross‐linked guayule natural rubbers (P‐gGR) are prepared from non‐acetone‐extracted solid green guayule natural rubber (gGR) made by drying latex. Tensile and dynamic mechanical properties of P‐gGR samples of three different network chain densities are characterized. All P‐gGR samples demonstrate highly reproducible tensile behaviors under two repeated cycles. For the first time, strain‐induced crystallization (SIC) behaviors of P‐gGR are measured with synchrotron wide‐angle X‐ray diffraction measurements under two repeated cycles by exposing the incident beam for 70 ms every 3 s. Highly reproducible SIC phenomena are observed, and apparent crystallite sizes, average volumes, indexes of average number, and orientation fluctuations of crystallites are confirmed to not change significantly during cyclic deformation. Non‐rubber components such as phospholipids, glycolipids, fatty acids, esters, sterols, and terpenes in gGR barely inhibit the second SIC of the P‐gGR and do not cause deterioration of its mechanical properties. The reproducibility of cyclic stress–strain curves and cyclic SIC behavior of the P‐gGR sample is ascribed to the thermodynamically stable peroxide cross‐linking network. As a viable alternative to Hevea natural rubber in the rubber industry, these findings on gGR provide valuable insights for manufacturing both conventional and high‐quality products.https://doi.org/10.1002/mame.202400439cyclic deformationguayule natural rubbernon‐rubber componentsperoxide cross‐linkingstrain‐induced crystallization |
| spellingShingle | Preeyanuch Junkong Takumi Ohashi Treethip Phakkeeree Kosuke Miyaji Shotaro Iwasaki Katrina Cornish Yuko Ikeda Two‐Cycle Strain‐Induced Crystallization Behavior of Peroxide Cross‐Linked Solid Guayule Natural Rubber Macromolecular Materials and Engineering cyclic deformation guayule natural rubber non‐rubber components peroxide cross‐linking strain‐induced crystallization |
| title | Two‐Cycle Strain‐Induced Crystallization Behavior of Peroxide Cross‐Linked Solid Guayule Natural Rubber |
| title_full | Two‐Cycle Strain‐Induced Crystallization Behavior of Peroxide Cross‐Linked Solid Guayule Natural Rubber |
| title_fullStr | Two‐Cycle Strain‐Induced Crystallization Behavior of Peroxide Cross‐Linked Solid Guayule Natural Rubber |
| title_full_unstemmed | Two‐Cycle Strain‐Induced Crystallization Behavior of Peroxide Cross‐Linked Solid Guayule Natural Rubber |
| title_short | Two‐Cycle Strain‐Induced Crystallization Behavior of Peroxide Cross‐Linked Solid Guayule Natural Rubber |
| title_sort | two cycle strain induced crystallization behavior of peroxide cross linked solid guayule natural rubber |
| topic | cyclic deformation guayule natural rubber non‐rubber components peroxide cross‐linking strain‐induced crystallization |
| url | https://doi.org/10.1002/mame.202400439 |
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