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2013 | 15 | 4 | 71-74
Tytuł artykułu

Influence of heterogeneous nucleation on thermodynamic properties of isotactic polypropylene

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this paper we have investigated the effect of 1,2,3-trideoxy-4,6:5,7-bis-O-[(4-propylphenyl)methylene]-nonitol sorbitol used in varying amounts (0.01 - 1 wt %) on isotactic polypropylene (iPP) matrix. We have used dynamic mechanical thermal analysis (DMTA) and differential scanning calorimetry (DSC) to study glass transition temperatures and crystallinity as a function of the nucleating agent concentration. Isotactic polypropylene samples showed a strong dependency on amount of α nucleating agent used. An increasing content of sorbitol based nucleating agent led to an increase of crystallization temperature upon cooling from the melt at constant rate and a decrease of the glass transition temperatures.
Słowa kluczowe
Wydawca

Rocznik
Tom
15
Numer
4
Strony
71-74
Opis fizyczny
Daty
wydano
2013-12-01
online
2013-12-31
Twórcy
Bibliografia
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  • 2. Sterzynski, T. (2000). Nucleation by additives in semicrystalline polymers: Effects of mechanical behaviour Ch. 12. In W. Brostow (Ed.), Performance of Plastics (pp. 254-282). Munich - Cincinnati, Hanser.
  • 3. Lotz, B., Wittmann, J.C. & Lovinger, A.J. (1996). Structure and morphology of poly(propylenes): A molecular analysis. Polymer 37(22), 4979-4992. DOI: 10.1016/0032-3861(96)00370-9.[Crossref]
  • 4. Varga, J. (1992). Supermolecular structure of isotactic polypropylene. J. Mater. Sci. 27(10), 2557-2579. DOI: 10.1007/ BF00540671.[Crossref]
  • 5. Jakubowska, P., Sterzyński, T. & Królikowski, B. (2008). The properties of polyolefl ns modifi ed with PET powder. J. Appl. Polym. Sci. 109, 1993-1999. DOI: 10.1002/app.27704.[Crossref]
  • 6. Menard, K.P. (2000). Thermal transitions and their measurement Ch. 8. In W. Brostow (Ed.), Performance of Plastics (pp. 254-282). Munich - Cincinnati, Hanser.
  • 7. Gahleitner, M., Grein, C., Kheirandish, S. & Wolfschwenger, J. (2011). Nucleation of Polypropylene Homo- and Copolymers. Int. Polym. Proc. 26(1), 2-20. DOI: 10.3139/217.2411.[Crossref]
  • 8. Varga, J. (2002). β-modifi cation of isotactic polypropylene: Preparation, structure, processing, properties, and application. J. Macromol. Sci., Phys. B 41(4-6), 1121-1171. DOI: 10.1081/ MB-120013089.[Crossref]
  • 9. Di Lorenzo, M.L. (1999). Non-isothermal crystallization of polymers. Prog. Polym. Sci. 24(6), 917-950. DOI: 10.1016/ S0079-6700(99)00019-2.[Crossref]
  • 10. Paukszta, D. & Garbarczyk, J. (2003). Crystallization of isotactic polypropylene with β-nucleating agents under elevated pressure. Fibres Text. East. Eur. 11(5), 50-53.
  • 11. Garbarczyk, J., Paukszta, D. & Borysiak, S. (2002). Polymorphism of isotactic polypropylene in presence of additives, in blends and in composites. J. Macromol. Sci., Phys.41B(4-6), 1267-1278. DOI: 10.1081/MB-120013096.[Crossref]
  • 12. Romankiewicz, A., Sterzyński, T. & Brostow, W. (2004). Structural characterization of α- and β-nucleated isotactic polypropylene. Polym. Int. 53(12), 2086-2091. DOI: 10.1002/pi.1632.[Crossref]
  • 13. Brostow, W., Datashvili, T., Geodakyan, J. & Lou, J. (2011). Thermal and mechanical properties of EPDM/PP + thermal shock-resistant ceramic composites. J. Mater. Sci. 46, 2445-2455. DOI: 10.1007/s10853-010-5091-2.[Crossref]
  • 14. Budinski-Simendić, J., Petrović, Z., Lazić, V., Radičević, R. & Divjaković, V. (2004). The effect of nucleants on the crystallization behavior of isotactic polypropylene. Mater. Sci. Forum 453-454, 509-514. DOI: 10.4028/www.scientifi c.net/ MSF.453-454.509.[Crossref]
  • 15. Romankiewicz, A., Jurga, J. & Sterzyński, T. (2003). Study of Nucleation Induced Structure Modifi cation in Isotactic Polypropylene by DMTA and Solid State NMR. Macromol. Symp. 202, 281-290. DOI: 10.1002/masy.200351224.[Crossref]
  • 16. Gnatkowski, A., Kwiatkowski, D. & Nabiałek, J. (2011). DMTA and DSC analyses of composite PA 6,6 with glass fi bre after dye addition and ageing. Composites Theory and Practice 11, 247-251.
  • 17. Sui, G., Zhong, W.H., Fuqua, M.A. & Ulven, C.A. (2007). Crystalline structure and properties of carbon nanofi ber composites prepared by melt extrusion. Macromol. Chem. Phys. 208, 1928-1936. DOI: 10.1 002/macp.200700 170.[Crossref]
Typ dokumentu
Bibliografia
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Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_pjct-2013-0071
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