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Ethylene Extrusion Polymerization by Heterogeneous bi-Supported Ziegler-Natta Catalysts

Mohammad Ali Semsarzadeh and Alireza Aghili
Affiliation: 
Polymer Engineering Group, Tarbiat Modares University, Jalal Al-e-Ahmad Highway, Tehran, PO. Box: 14115-111, Iran semsarzadeh@modares.ac.ir
DOI: 
https://doi.org/10.23939/chcht03.01.067
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Keywords:

Abstract: 
The MCM-41 (Mobil Composition of Matter) and SBA-16 (Santa Barbara Amorphous) supported TiCl4 and TiCl4/MgCl2 catalysts with different molar ratios of Mg/Ti were synthesized and used for ethylene polymerization under atmospheric pressure. The nanochannels of these supports serve as a nanoscale polymerization reactor and the polyethylene nanofibers were extruded during the reaction. The effect of MgCl2 on catalytic activity and morphology of resulting polyethylene has been investigated too. MgCl2 has enhanced the catalytic activities and made the SBA-16/MgCl2/TiCl4 catalytic system has fibrous morphology.
References: 

[1] Lu H. and Xiao S.: Macromol. Chem., 1993, 194, 421.

[2] de Santa Maria L., Soga K. and Shiono T.: Macromol. Chem. Phys., 1994, 195, 2591.
https://doi.org/10.1002/macp.1994.021950726

[3] Kim I., Kim J. and Woo S.: J. Appl. Polym. Sci., 1990, 39, 837.
https://doi.org/10.1002/app.1990.070390406

[4] Lehmus P. and Rieger B.: Science, 1991, 285, 2081.
https://doi.org/10.1126/science.285.5436.2081

[5] Sano T. and Yasunori O.: Catal. Surv. Asia, 2004, 8, 295.

[6] Kageyama K., Tamazawa J. and Aida T.: Science, 1999, 285, 2113.
https://doi.org/10.1126/science.285.5436.2113

[7] Ye Z., Zhu S., Wang W. et al.: J. Polym. Sci. B., 2003, 41, 2433.
https://doi.org/10.1002/polb.10588

[8] Turunen J. and Pakkanen T.: J. Molecul. Catalys. A, 2007, 263, 1.
https://doi.org/10.1016/j.molcata.2006.07.072

[9] Dong X., Wang L., Wang J. et al.: J. Phys. Chem. B, 2006, 110, 9100.

[10] Nair S., Naredi P. and Kim S.: J. Phys. Chem. B, 2005, 109, 12491.
https://doi.org/10.1021/jp051772q

[11] Chen S., Guo C., Liuc L. et al.: Polymer, 2005, 46, 11093.
https://doi.org/10.1016/j.polymer.2005.09.033

[12] Kageyama K., Ng S., Ichikawa H. and Aida T.: Macromol. Symp., 2000, 157, 137.
https://doi.org/10.1002/1521-3900(200007)157:1<137::AID-MASY137>3.0.CO;2-U

[13] Guo C., Zhang D., Wang F. and Jin G.: J. Catal., 2005, 234, 356.
https://doi.org/10.1016/j.jcat.2005.06.002

[14] Turunen J., Venalainen T., Suvanto S. and Pakkanen T.: J. Polym. Sci. A, 2007, 45, 4002.
https://doi.org/10.1002/pola.22154

[15] Guo C., Jin G. and Wang F.: J. Polym. Sci. A., 2004, 42, 4830.
https://doi.org/10.1002/pola.20306

[16] Dong X., Wang L., Wang W. et al.: Macromol. Mater. Eng., 2005, 290, 31.
https://doi.org/10.1002/mame.200400262

[17] Nakajima H., Yamada K., Iseki Y. et al.: J. Polym. Sci. B, 2003, 40, 3324.

[18] Silveira F., Petry C., Pozebon D. et al.: Appl. Catal. A, 2007, 333, 96.
https://doi.org/10.1016/j.apcata.2007.09.010

[19] Dong X., Wang L., Jiang G. et al.: J. Molecul. Catalys. A, 2005, 240, 239.

[20] Dong X., Wang L., Wang W. et al.: Eur. Polym. J., 2005, 41, 797.
https://doi.org/10.1016/j.eurpolymj.2004.11.001

[21] Dong X., Wang L., Zhou J. et al.: Catalys. Commun., 2006, 7, 1.

[22] Zhang W., Zhou S. and Zhang R.: Des. Monom. Polym., 2007, 10, 469.
https://doi.org/10.1163/156855507781833639

[23] Semsarzadeh M. and Aghili A.: J. Macromol. Sci. A., accepted in Jan. 2008.

[24] Grun M., Unger K., Matsumoto A. and Tsutsumi K.: Micropor. Mesopor. Mater., 1999, 27, 207.
https://doi.org/10.1016/S1387-1811(98)00255-8

[25] Zhao D., Huo Q., Feng J. et al.: J. Am. Chem. Soc., 1998, 120, 6024.
https://doi.org/10.1021/ja974025i

[26] Kim T., Ryoo R., Kruk M. et al.: J. Phys. Chem. B, 2004, 108, 11480.
https://doi.org/10.1021/jp048582k

[27] Soga K., Ohnishi R. and Doi Y.: Polym. Bull., 1983, 9, 299.

[28] Rong J., Jing Z., Li H. and Sheng M.: Macromol. Rapid Commun., 2001, 22, 329.
https://doi.org/10.1002/1521-3927(20010301)22:5<329::AID-MARC329>3.0.CO;2-4

[29] Tajima K. and Aida T.: Chem. Commun., 2000, 24, 2399.
https://doi.org/10.1039/b007618j