Time-resolved FTIR Spectroscopy를 이용한 Syndiotactic Polypropylene의 변형현상 연구

진정희; 옥재훈; 송기국

Polymer(Korea), Vol.21, No.5, 830-835, September, 1997

Export Citation

Time-resolved FTIR Spectroscopy를 이용한 Syndiotactic Polypropylene의 변형현상 연구

Studies of Deformation Pheomena in Syndiotactic Polypropylene Using Time-resolved FTIR Spectroscopy

진정희, 옥재훈, 송기국

초록

고분자의 변형현상을 분자차원에서 이해하기 위하여 time-resolved FTIR spectroscopy를 이온히여 s-PP 필름의 연신에 따른 IR 스펙트럼의 변화를 조사함으로써stress-strain diagram에서 얻어진 고분자의 거시적인 변형현상을 고분자 구조와 배향의 변화와 상관지어 설명할 수 있었다. s-PP 필름을 연신할 때 necking이 일어나게 되면 일차적으로 사슬의 conformation이 helix에서 planar zigzag 구조로 변하기 시작한 후, 계속하여 사슬의 conformation 변화와 배향치 변화가 같이 나타났다. 연신에 따른 사슬의 배향은 nocking legion에서는 결정이나 무정형 영역에 존재하는 모든 s-PP 사슬들이 연신 방향으로 배향이 되는 반면 strain hardening legion에서는 결정영역엔 존재하는 고분자 사슬들만 배향이 일어나는 것을 알 수 있었다.

In order to understand polymer deformation phenomena at the molecular level, the time-resolved FTIR spectroscopy was employed. By investigating the changes in IR spectra with drawing the s-PP film. the macroscopic deformation properties reflected by stressstrain diagrams were correlated with polymer structure and orientations. Once the neck was formed by stretching the s-PP film, at first the chain conformation transformed from helix to planar zigzag structure, and then changes in the chain orientation were observed. In the necking region, the polymer chains of the amorphous as well as the crystalline domains were oriented, whereas only the chains in the crystalline domain were oriented in the strain hardening region.

Keywords:syndiotactic polypropylene;time-resolved FTIR spectroscopy;deformation;conformation;orientation

[References]

Natta G, Pasquon I, Corradini P, Peraldo M, Pegoraro M, Zambelli A, Rend. Accad. Naz. Lincei., 28, 539 (1960)
Haftka S, Koennecke K, J. Macromol. Sci.-Phys., 30(4), 319 (1991)
Rodriguez J, Bu Z, Cheng SZD, Rev. Macromol. Chem. Phys., C35(1), 117 (1995)
Lovinger AJ, Davis DD, Macromolecules, 24, 552 (1991)
Rodriguezarnold J, Bu ZZ, Cheng SZ, Hsieh ET, Johnson TW, Geerts RG, Palackal SJ, Hawley GR, Welch MB, Polymer, 35(24), 5194 (1994)
Marchetti A, Martuscelli E, J. Polym. Sci. A: Polym. Chem., 2(12), 1649 (1974)
Chatani Y, Maruyama H, Noguchi K, J. Polym. Sci. C: Polym. Lett., 28, 393 (1990)
Peraldo M, Cambini M, Spectrochemica Acta, 21, 1500 (1965)
Schachtschneider JH, Snyder RG, Spectrochemica Acta, 21, 1527 (1965)
Bayer G, Hoffmann W, Polymer, 21, 235 (1980)
Holland-Moritz K, Siesler W, Polym. Bull., 4, 165 (1981)
Gupta MK, Carlsson DJ, Wiles DM, J. Polym. Sci. B: Polym. Phys., 22, 1011 (1984)
Buffeteau T, Desbat B, Bokobza L, Polymer, 36(22), 4339 (1995)
Mirabella FM, J. Polym. Sci. B: Polym. Phys., 25, 591 (1987)
Uehara H, Yamazaki Y, Kanamoto T, Polymer, 37(1), 57 (1996)
Tashiro K, Minami S, Wu G, Kobayashi M, J. Polym. Sci. B: Polym. Phys., 30, 1143 (1992)
Ok J, Song K, Polym.(Korea), 20(6), 1042 (1996)

[Referenced By]

[1] Natta G, Pasquon I, Corradini P, Peraldo M, Pegoraro M, Zambelli A, Rend. Accad. Naz. Lincei., 28, 539 (1960)

[2] Haftka S, Koennecke K, J. Macromol. Sci.-Phys., 30(4), 319 (1991)

[3] Rodriguez J, Bu Z, Cheng SZD, Rev. Macromol. Chem. Phys., C35(1), 117 (1995)

[4] Lovinger AJ, Davis DD, Macromolecules, 24, 552 (1991)

[5] Rodriguezarnold J, Bu ZZ, Cheng SZ, Hsieh ET, Johnson TW, Geerts RG, Palackal SJ, Hawley GR, Welch MB, Polymer, 35(24), 5194 (1994)

[6] Marchetti A, Martuscelli E, J. Polym. Sci. A: Polym. Chem., 2(12), 1649 (1974)

[7] Chatani Y, Maruyama H, Noguchi K, J. Polym. Sci. C: Polym. Lett., 28, 393 (1990)

[8] Peraldo M, Cambini M, Spectrochemica Acta, 21, 1500 (1965)

[9] Schachtschneider JH, Snyder RG, Spectrochemica Acta, 21, 1527 (1965)

[10] Bayer G, Hoffmann W, Polymer, 21, 235 (1980)

[11] Holland-Moritz K, Siesler W, Polym. Bull., 4, 165 (1981)

[12] Gupta MK, Carlsson DJ, Wiles DM, J. Polym. Sci. B: Polym. Phys., 22, 1011 (1984)

[13] Buffeteau T, Desbat B, Bokobza L, Polymer, 36(22), 4339 (1995)

[14] Mirabella FM, J. Polym. Sci. B: Polym. Phys., 25, 591 (1987)

[15] Uehara H, Yamazaki Y, Kanamoto T, Polymer, 37(1), 57 (1996)

[16] Tashiro K, Minami S, Wu G, Kobayashi M, J. Polym. Sci. B: Polym. Phys., 30, 1143 (1992)

[17] Ok J, Song K, Polym.(Korea), 20(6), 1042 (1996)