Ultra-Drawing and the Resultant Structure and Properties of Poly (acrylonitrile) and Its Copolymers with Different Thermal Stabilities
A two-stage draw technique, consisting of the initial solid-state coextrusion followed by the second-stage tensile drawing, was applied. for ultradrawing ofthree acrylic polymers with different thermal stabilities, i. e., poly (acrylonitrile) (PAN) and two copolymers of acrylonitrile with methyl met...
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| Published in | KOBUNSHI RONBUNSHU Vol. 59; no. 5; pp. 274 - 280 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Japanese |
| Published |
Tokyo
The Society of Polymer Science, Japan
01.01.2002
Tsukiji daisan nagaoka |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0386-2186 1881-5685 |
| DOI | 10.1295/koron.59.274 |
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| Abstract | A two-stage draw technique, consisting of the initial solid-state coextrusion followed by the second-stage tensile drawing, was applied. for ultradrawing ofthree acrylic polymers with different thermal stabilities, i. e., poly (acrylonitrile) (PAN) and two copolymers of acrylonitrile with methyl methacrylate (AN/MA) or methacrylic acid (AN/MAA). Although optimum draw temperatures for the second-stage draw were 170-180°C for all of the three polymers, the maximum achieved total draw ratios (DRt) were-70 for PAN and AN/MA and-45 for thermally less stable AN/MAA. Thus, the highest achieved chain orientation function fc=0.988 for AN/MAA was significantly lower than fc=0.995 for the other two polymers. It is noted, however, that the fc value achieved for AN/MAA was significantly higher than the highest fc value of-0.97 previously reported for tensile drawing of a PAN fiber. These facts indicate that the two-stage draw technique is an excellent technique for achieving higher draw and chain orientation. The highest tensile modulus and strength were obtained by drawing of AN/MA; the values were 24 and 1.3 GPa, respectively. |
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| AbstractList | A two-stage draw technique, consisting of the initial solid-state coextrusion followed by the second-stage tensile drawing, was applied. for ultradrawing ofthree acrylic polymers with different thermal stabilities, i. e., poly (acrylonitrile) (PAN) and two copolymers of acrylonitrile with methyl methacrylate (AN/MA) or methacrylic acid (AN/MAA). Although optimum draw temperatures for the second-stage draw were 170-180°C for all of the three polymers, the maximum achieved total draw ratios (DRt) were-70 for PAN and AN/MA and-45 for thermally less stable AN/MAA. Thus, the highest achieved chain orientation function fc=0.988 for AN/MAA was significantly lower than fc=0.995 for the other two polymers. It is noted, however, that the fc value achieved for AN/MAA was significantly higher than the highest fc value of-0.97 previously reported for tensile drawing of a PAN fiber. These facts indicate that the two-stage draw technique is an excellent technique for achieving higher draw and chain orientation. The highest tensile modulus and strength were obtained by drawing of AN/MA; the values were 24 and 1.3 GPa, respectively. |
| Author | SAWAI, Daisuke HATAKEYAMA, Kazuto KANAMOTO, Tetsuo |
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| References_xml | – reference: 12) 稲垣道夫, 菱山幸宥, “ニューカーボン材料”, 技報堂出版, 東京 (1994). – reference: 15) P.D. Griswald, A.E. Zachariades, and R.S. Porter, Polym. Eng. Sci., 18, 861 (1978). – reference: 7) A. Yamane, D. Sawai, T. Kameda, T. Kanamoto, M. Ito, and R.S. Porter, Macromolecules, 30, 4170 (1997). – reference: 10) A. K. Gupta, D.K. Paliwal, and P. Bayaj, JMS, Rev. Macromol. Chem. Phys., C31 (1), 1 (1991). – reference: 1) C.R. Bohn, J.R. Schaefgen, and W.O. Statton, J. Polym. Sci., 31, 55 (1961). – reference: 22) J. Rault, JMS, Rev. Macromol. Chem. Phys., C37 (2), 335 (1997). – reference: 5) T. Kameda and T. Kanamoto, J. Soc, Rheol. Jpn., 21, 156 (1993). – reference: 14) 小川博靖, 日本化学会誌, 1994, 809. – reference: 8) D. Sawai, A. Yamane, H. Takahashi, T. Kanamoto, M. Ito, and R.S. Porter, J. Polym. Sci., Polym. Phys. Ed., 36, 629 (1998). – reference: 19) R. Saraf and R.S. Porter, J. Polym. Sci., Polym. Phys. Ed., 26, 1049 (1988). – reference: 23) O.P. Bahl and R.B. Mathur, Fibre Sci. Technol., 12, 31 (1979). – reference: 17) 永井雅之, 上原宏樹, 金元哲夫, 高分子論文集, 53, 555 (1996). – reference: 9) D. Sawai, A. Yamane, T. Kameda, T. Kanamoto, M. Ito, H. Yamazaki, and K. Hisatani, Macromolecules, 32, 5622 (1999). – reference: 6) T. Kameda, A. Yamane, T. Kanamoto, M. Ito, and R.S. Porter, Polym. Sci. U.S.S.R., 38, 737 (1996). – reference: 3) W.R. Krigbaum and N. Tokita, J. Polym. Sci., 43, 647 (1960). – reference: 2) Z. Bahir, J. Polym. Sci., Polym. Phys. Ed., 32, 1125 (1994). – reference: 18) S.M. Aharoni and J.P. Sibilia, J. Appl. Polym. Sci., 23, 133 (1979). – reference: 24) S.L. Dobretsov, N.V. Lomonosova, V.P. Stelmakh, and S.Y. Frenkel, Vysokomol. Soedin. Ser. A, 14, 1143 (1972). – reference: 13) 島村昭治, “カーボンファイバ”, オーム社, 東京 (1984). – reference: 16) 柿田秀人, 高分子加工, 42, 574 (1993). – reference: 4) J. Smook, G.J.H. Vos, and H.L. Doppert, J. Appl. Polym. Sci., 41, 105 (1990). – reference: 11) 横山昭, エレクトロニク・セラミクス, 23, 47 (1992). – reference: 20) W.G. Hu and K. Schmidt-Rohr, Acta Polym., 50, 271 (1999). – reference: 21) P. Smith, P.J. Lemstra, and H.C. Booij, J. Polym. Sci., Polym. Phys. Ed., 19, 877 (1981). |
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| SubjectTerms | Acrylonitrile Copolymers Chain Orientation Poly (acrylonitrile) Tensile Properties Ultra-Drawing |
| Title | Ultra-Drawing and the Resultant Structure and Properties of Poly (acrylonitrile) and Its Copolymers with Different Thermal Stabilities |
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