Abstract
The multiple endothermic peaks of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (P(HB-co-HV)) in differential scanning calorimetry (DSC) results, as one representative phenomenon of polymer with unique cocrystallization behavior, were generally considered as the results of melting/recrystallization. In this study, wide angle X-ray diffraction (WAXD) and small angle X-ray scattering (SAXS) experiments were conducted to analyze the phenomena of multiple endothermic peaks in DSC results. The results of these analyses indicated that the multiple endotherms were mainly caused by different lamellae structures. For P(HB-co-HV) with lower HV content, it was comprised of two structures of HV total exclusion and HV partial inclusion in the crystal lamellae. For P(HB-co-HV) with higher HV content, it was also comprised of two structures of HV total inclusion and HV partial inclusion in the crystal lamellae. However, only structure with HV partial inclusion in the crystal lamellae remained existing after first melting peak for all samples.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
Flory, P.J., Trans. Faraday Soc., 1955, 51: 848
William, J.O., Robert, H.M. and Terry, L.B., Macromolecules, 1991, 24: 6435
Sanchez, I.C. and Eby, R.K., Macromolecules, 1973, 77: 353
Sanchez, I.C. and Eby, R.K., Macromolecules, 1975, 8: 638
Naoko, Y., Miwa, S. and Yoshio, Y., Macromolecules, 2001, 34: 8953
Allerga, G. and Bassi, I.W., Adv. Polym. Sci., 1969, 6: 549
Naoko, Y., Akeshi, A. and Yoshio, I., Macromolecules, 2004, 37: 3770
Naoko, K., Yoshio, I., Yasuhiko, Y., Riichirô, C. and Yoshiharu, D., Macromolecules, 1990, 23: 1313
Schlegel, H.G., Gottschalk, G. and Bastha, R.V., Nature, 1961, 191: 463
Lundgren, D.G., Alper, R., Schanaitman, C. and Marchessault, R.H., J. Bacteriol., 1965, 89: 245
Holmes, P.A., Wright, L.F. and Collins, S.H., Eur. Pat. Appl, 1982 0052459
Holmes, P.A., Wright, L.F. and Collins, S.H., Eur. Pat. Appl 1983, 0069497
Cornibert, J. and Marchessault, R.H., J. Mol. Biol., 1972, 71: 735
Yokouchi, M., Chatani, Y., Tadokoro, H., Teranishi, K. and Tani, H., Polymer, 1973, 14: 267
Yokouchi, M., Chatani, Y., Tadokoro, H. and Tani, H., Polym. J., 1974, 6: 248
Mitomo, H., Morishita, N. and Doi, Y., Macromolecules, 1993, 26: 5809
Yamada, S., Wang, L., Asakawa, N., Yoshie, N. and Inoue, Y., Macromolecules, 2001, 34: 4659
Naoko, K., Yasuhiko, Y., Yoshio, I., Chûjô, R. and Yoshiharu, D., Macromolecules, 1989, 22: 1676
Naoko, Y., Hiroyuki, M., Hidenori, S. and Yoshio, I., Macromolecules, 1995, 28: 6516
Mitomo, H., Barham, P.J. and Keller, A., Polym. J., 1987, 19: 1241
Mitomo, H., Barham, P.J. and Keller, A., Seni-Gakkaishi, 1986, 42: T589
Organ, S.J. and Barham, P.J., J. Mater. Sci., 1991, 26: 1368
Rule, R.J. and Liggat, J.J., Polymer, 1995, 36: 3831
Holmes, P.A., Phys. Technol., 1985, 16: 32
Doi, Y., Tamaki, A., Kunioka, M. and Soga, K., Appl. Microbiol. Biotechnol., 1988, 28: 330
Vonk, C.G., Kortleve, G. and Koll, Z.Z., Polymer, 1967, 220: 19
Vonk, C.G., J. Appl. Cryst., 1971, 4: 340
Strobl, G.R. and Schneider, M.J., J. Polym. Sci., Polym. Phys. Ed., 1980, 18: 1343
Inoue, Y., Kamiya, N., Yamamoto, Y., Chûjô, R. and Yoshiharu, D., Macromolecules, 1989, 22: 3800
Cuesta, M.S., Salazar, J.M., Barker, P.A. and Barham, P.J., J. Mater. Sci., 1992, 27: 5335
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was financially supported by Natural Science Foundation of Zhejiang Province (No. LY15B040003) and K.C. Wong Magna Fund in Ningbo University.
Rights and permissions
About this article
Cite this article
Lv, Y., Zhu, H., An, Mf. et al. Multiple endothermic peaks resulted from different crystal structures in an isomorphous copolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Chin J Polym Sci 34, 1510–1522 (2016). https://doi.org/10.1007/s10118-016-1866-5
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10118-016-1866-5