Tensile Recovery in Nylon 6/Modified Butyl-Rubber Blend System Consisting of Rubber Particles Distributed in a Nylon Matrix
The effect of morphology on the tensile recovery was studied for a series of blends of nylon 6 (PA6) and a brominated poly (isobutylene-co-p-methylstyrene) copolymer (BIMS rubber) having wide variations in composition and morphology. To modify the morphology of the simple blends consisting of the tw...
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| Published in | KOBUNSHI RONBUNSHU Vol. 62; no. 7; pp. 301 - 309 |
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| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
The Society of Polymer Science, Japan
01.01.2005
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0386-2186 1881-5685 |
| DOI | 10.1295/koron.62.301 |
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| Abstract | The effect of morphology on the tensile recovery was studied for a series of blends of nylon 6 (PA6) and a brominated poly (isobutylene-co-p-methylstyrene) copolymer (BIMS rubber) having wide variations in composition and morphology. To modify the morphology of the simple blends consisting of the two components, we added a small amount of sulfur (0.5 wt% of the rubber component) and kneaded the mixtures by two different manners at around 250°C. Microscopic observations of a simple blend of PA6/BIMS=60/40 revealed that rubber particles of a diameter=0.2-0.8μm were uniformly dispersed in the continuous PA6 matrix. However, upon kneading of sulfur, the rubber particles aggregated to form a large domain (1-5μm) with an irregular shape; such domains were distributed in the PA6 matrix. Closer inspections of the transmission electron micrographs revealed that small domains of the PA6 component were included within a larger rubber domain. Such blends with heterogeneous morphology showed a lower dynamic Young's modulus and a superior strain recovery compared to those with uniformly dispersed rubber particles. It was found that the tensile set for a series of the blends could be represented by a unique function of the dynamic Young's modulus, independently of the blend composition. |
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| AbstractList | The effect of morphology on the tensile recovery was studied for a series of blends of nylon 6 (PA6) and a brominated poly (isobutylene-co-p-methylstyrene) copolymer (BIMS rubber) having wide variations in composition and morphology. To modify the morphology of the simple blends consisting of the two components, we added a small amount of sulfur (0.5 wt% of the rubber component) and kneaded the mixtures by two different manners at around 250°C. Microscopic observations of a simple blend of PA6/BIMS=60/40 revealed that rubber particles of a diameter=0.2-0.8μm were uniformly dispersed in the continuous PA6 matrix. However, upon kneading of sulfur, the rubber particles aggregated to form a large domain (1-5μm) with an irregular shape; such domains were distributed in the PA6 matrix. Closer inspections of the transmission electron micrographs revealed that small domains of the PA6 component were included within a larger rubber domain. Such blends with heterogeneous morphology showed a lower dynamic Young's modulus and a superior strain recovery compared to those with uniformly dispersed rubber particles. It was found that the tensile set for a series of the blends could be represented by a unique function of the dynamic Young's modulus, independently of the blend composition. |
| Author | SAWAI, Daisuke ENOMOTO, Tatsuya SOEDA, Yoshihiro HARA, Yuichi MOROOKA, Naoyuki KAIDO, Hiroyuki KANAMOTO, Tetsuo |
| Author_xml | – sequence: 1 fullname: KAIDO, Hiroyuki organization: Research and Development Center, The YOKOHAMA RUBBER CO., LTD – sequence: 1 fullname: ENOMOTO, Tatsuya organization: Department of Applied Chemistry, Tokyo University of Science – sequence: 1 fullname: SAWAI, Daisuke organization: Department of Applied Chemistry, Tokyo University of Science – sequence: 1 fullname: HARA, Yuichi organization: Research and Development Center, The YOKOHAMA RUBBER CO., LTD – sequence: 1 fullname: KANAMOTO, Tetsuo organization: Department of Applied Chemistry, Tokyo University of Science – sequence: 1 fullname: MOROOKA, Naoyuki organization: Department of Applied Chemistry, Tokyo University of Science – sequence: 1 fullname: SOEDA, Yoshihiro organization: Research and Development Center, The YOKOHAMA RUBBER CO., LTD |
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| References_xml | – reference: 1) A.Y. Coran and R. Patel, Rubber Chem. Technol., 53, 141 (1980). – reference: 3) T. Aoyama, A.J. Carlos, H. Saito, and T. Inoue, Polymer, 40, 3657 (1999). – reference: 5) M.C. Boyce, O. Yeh, S. Socrate, K. Kear, and K. Shaw, J. Mech. Phys. Solids, 49, 1343 (2001). – reference: 4) M.C. Boyce, S. Socrate, K. Kear, O. Yeh, and K. Shaw, J. Mech. Phys. Solids, 49, 1323 (2001). – reference: 9) J. Oderkerk, G. Groeninckx, and M. Soliman, Macromolecules, 35, 3946 (2002). – reference: 2) M. Okamoto, K. Shiomi, and T. Inoue, Polymer, 35, 4618 (1994). – reference: 8) Y. Yang, T. Chiba, H. Saito, and T. Inoue, Polymer, 39, 3365 (1998). – reference: 7) M.C. Boyce, K. Kear, S. Socrate, and K. Shaw, J. Mech. Phys. Solids, 49, 1073 (2001). – reference: 10) J. Oderkerk, G. de Schaetzen, B. Goderis, L. Hellemans, and G. Groeninckx, Macromolecules, 35, 6623 (2002). – reference: 15) D. Dompas and G. Groeninckx, Polymer, 35, 4743 (1994). – reference: 16) I. Narisawa, T. Kuriyama, B. Schemer, and K. Fredrich, Macromol. Symp., 101, 273 (1996). – reference: 6) S. Kawabata, S. Kitawaki, H. Arisawa, Y. Yamashita, and X. Guo, J. Appl. Polym. Sci., Appl. Polym. Symp., 50, 245 (1992). – reference: 13) B. Wunderlich, “Macromolecular Physics”, Vol. 1, Crystal Structure, Morphology, Defects, Academic Press, New York (1973), p.389. – reference: 14) 添田善弘, 杉田篤史, 田坂茂, 日ゴム協誌, 76, 436 (2003). – reference: 12) K. Ueda, K. Yamada, M. Nakai, T. Matsuda, M. Hosoda, and K. Tai, Polym. J., 28, 446 (1996). – reference: 11) 師岡直之, 原祐一, 澤井大輔, 添田善弘, 金元哲夫, 高分子論文集, 60, 475 (2003). |
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| Snippet | The effect of morphology on the tensile recovery was studied for a series of blends of nylon 6 (PA6) and a brominated poly (isobutylene-co-p-methylstyrene)... |
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| SubjectTerms | Morphology Nylon 6-Modified Butyl-Rubber Blends Tensile Recovery Tensile Set Young's Modulus |
| Title | Tensile Recovery in Nylon 6/Modified Butyl-Rubber Blend System Consisting of Rubber Particles Distributed in a Nylon Matrix |
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