FT-IR Spectroscopic Studies of Uniaxial Orientation Changes in Poly(tetrafluoroethylene)

Jin-Who Hong; Byung-Wook Jo

Journal of Industrial and Engineering Chemistry, Vol.3, No.2, 99-104, June, 1997

Department of Chemical Engineering, Chosun University, Kwangju 501-759, Korea

Presence of transitions in the orientation function-strain profiles of poly(tetrafluoro-ethylene) (PTFE) has been studied spectroscopically. In contrast to polyethylene and other polymers, FT-lR strain dichroism measurements conducted on PTFE films show three transitions in the orientation function-strain curves. The first transition is detected in the 7-15% extension ratio range, whereas the other two transitions occur at ∼100 and ∼160% extensions. The first transition is believed to be attributed to the negative Poisson ratio, whereas the ∼100 and ∼160% strain transition are most likely attributed to yielding or cracking of PTFE.

[References]

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[Related Articles]

[1] Encyclopedia of Polymer Science, 16, 577 (1976)

[2] Sperati CA, Starkweather HW, Fortschr. Hochpolym. Forsch., 2, 465 (1961)

[3] Weeker SM, J. Appl. Phys., 43, 4344 (1972)

[4] Weeker SM, Cohen JB, Davidson T, J. Appl. Phys., 45, 4453 (1974)

[5] Yeung CK, Jasse B, J. Appl. Polym. Sci., 27, 4587 (1982)

[6] Davidson T, Gounder RN, Polym. Sci. Technol., 12B, 775 (1984)

[7] Zerbi G, Sacchi M, Macromolecules, 6, 692 (1973)

[8] Masetti G, Cabassi F, Zerbi G, Macromolecules, 6, 700 (1973)

[9] Chantry GW, Nicol RG, Willis HA, Cudby MEA, Polymer, 18, 37 (1977)

[10] Urbanczyk GW, J. Polym. Sci. Polym. Symp., 58, 311 (1977)

[11] Lauer JL, Bunting G, Jones WR, NASA Tech. Memo, NASA-TM-89844, E-3505, NASA 15:89844, 16 (1987)

[12] Piseri L, Cabassi F, Massetti G, Chem. Phys. Lett., 32, 378 (1975)

[13] Brandolini AJ, Alvey MD, Dybowski C, J. Polym. Sci. B: Polym. Phys., 21, 2511 (1983)

[14] Davidson T, Natarajan RT, Am. Chem. Soc. Div. Org. Coat. Plat. Chem. Pap., 34, 491 (1974)

[15] Bunn CW, Cobbold AJ, Palmer RP, J. Polym. Sci., 28, 365 (1958)

[16] Symons NKJ, J. Polym. Sci., 51, S21 (1961)

[17] Ward IM, "Structure and Properties of Oriented Polymers," Wiley, New York (1975)

[18] Chanzy HD, Smith P, J. Polym. Sci. C: Polym. Lett., 24, 557 (1986)

[19] Samuels RJ, "Structural Polymer Properties," Wiley, New York (1974)

[20] Evans KE, J. Phys. D, 22, 1870 (1989)

[21] Caddock BD, Evans KE, J. Phys. D, 22, 1877 (1989)

[22] Evans KE, Caddock BD, J. Phys. D, 22, 1883 (1989)

[23] Liang CY, Krimm S, J. Chem. Phys., 25, 563 (1956)

[24] Moynihan RE, J. Am. Chem. Soc., 81, 1045 (1959)

[25] Zbinden R, "Infrared Spectroscopy of High Polymers," Academic Press, New York (1964)

[26] Glenz W, Peterlin A, J. Polym. Sci. A: Polym. Chem., 2(9), 1191 (1971)

[27] Stein RS, J. Appl. Polym. Sci., 5, 96 (1961)

[28] Hsu SL, "Comprehensive Polymer Science," (Eds C. Booth and C. Price), 1, Pergamon Press, Oxford (1989)

[29] Jasse B, Koenig JL, J. Macromol. Sci.-Rev. Macromol. Chem. Phys., 17, 61 (1979)