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Ring Oxpening Polymerization of D,L-Lactide on Magnetite Nanoparticles  

Tian Jing (School of Chemical Engineering and Technology, TianJin University)
Feng Ya-Kai (School of Chemical Engineering and Technology, TianJin University)
Xu Yong-Shen (School of Chemical Engineering and Technology, TianJin University)
Publication Information
Macromolecular Research / v.14, no.2, 2006 , pp. 209-213 More about this Journal
Abstract
The ring-opening polymerization of D,L-lactide initiated by tin(II) 2-ethylhexanoate $(Sn(Oct)_2)$ on the surface-initiated magnetite $(Fe_{3}O_4)$ nanoparticles was performed at $130^{\circ}C$. The effects of the polymer molar mass and concentration on the amount of surface polymer were investigated. The number average molecular weights, $M_n$, obtained by both NMR and GPC methods fit well within the accuracy of the applied methods and ranged from 1,100 to $4,040g\;mol^{-1}$. A surface functionalization density of up to 625 initiation sites per particle was obtained. The composition of various core-shell particles was determined by TGA, with results indicating magnetite $(Fe_{3}O_4)$ contents, ${\mu}m$, between 17 and 59 wt%. Under the influence of a magnetic field, the heating generated by superparamagnetic core-shell particles suspended in toluene presented guidelines for an optimization of magnetic particle systems with respect to an application for hyperthermia.
Keywords
alternating magnetic field; D,L-lactide; hyperthermia; ring-opening polymerization; surface-initiated magnetite nanoparticles;
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1 J. L. Dormann, D. Fiorani, and E. Tronc, Adv. Chem. Phys., 98, 283 (1997)   DOI
2 Y. X. Wang, S. M. Hussain, and G. P. Krestin, European radiology, 11, 2319 (2001)   DOI   ScienceOn
3 M. Babincova, P. Cicmanec, P. Babinec, and V. Altanerova, et al., Z Naturforsch (Sect C), 56, 909 (2001)
4 L. Babes, B. Denizot, G. Tanguy, and J. Le Jeune, et al., J. Colloid Int. Sci., 212, 474 (1999)   DOI   ScienceOn
5 B. Bonnemain, J. Drug Target, 6, 167 (1998)   DOI   ScienceOn
6 G. Carrot, S. M. Scholz, C. J. G. Plummer, and J. G. Hilborn, Chem. Mater., 11, 3571 (1999)   DOI   ScienceOn
7 I. S. Choi and R. Langer. Macromolecules, 34, 5361 (2001)   DOI   ScienceOn
8 K. R. Yoon, Y. W. Lee, J. K. Lee, and I. S. Choi, Macromol. Rapid Comm., 25, 1510 (2004)   DOI   ScienceOn
9 Y. Zhang, N. Kohler, and M. Q. Zhang, Biomaterials, 23, 1553 (2002)   DOI   ScienceOn
10 J. P. Dailey, J. P. Phillipsb, C. Lib, and J. S. Riffleb, J. Magn. Magn. Mater., 194, 140 (1999)   DOI
11 J. Lahann and R. Langer, Macromol. Rapid Comm., 22, 968 (2001)   DOI   ScienceOn
12 B. M. Berkovsky and V. Bashtovoy, Magnetic fluids and applications handbook, Begell House, Inc., New York, Wallingford, UK, 1996
13 W. F. Brown Jr., Phys. Rev., 130, 1677 (1963)   DOI
14 P. Dubois, M. Krishnanb, and R. Narayanb, Polymer, 40, 3091 (1999)   DOI   ScienceOn
15 U. Schwertmann and R. M. Cornell, Iron oxides in the laboratory: preparation and characterization, Weinheim, Cambridge, VCH, 1991
16 N. Ramachandran and K. Mazuruk, Ann. NY Acad. Sci., 1027, 99 (2004)   DOI
17 H. Schenk, M. Svensson, and A. C. Albertsson, Macromolecules, 34, 3877 (2001)   DOI   ScienceOn
18 M. E. Fleet, Acta Crystallogr. B, 37, 917 (1981)   DOI
19 G. Carrot, D. Rutot-Houze, A. Pottier, and P Degee, et al., Macromolecules, 35, 8400 (2002)   DOI   ScienceOn
20 M. D. Butterworth, L. Illum, and S. S. Davis, Colloid Surface A, 179, 93 (2001)   DOI   ScienceOn
21 M. Moller, R. Kange, and J. L. Hedrick, J. Polym. Sci.; Part A: Polym. Chem., 38, 2067 (2000)   DOI   ScienceOn
22 K. R. Yoon, Y. J. Koh, and I. S. Choi, Macromol. Rapid Comm., 24, 207 (2003)   DOI   ScienceOn
23 S. H. Kim, Y. K. Han, Y. H. Kim, and S. I. Hong, Die Makromolekulare Chemie, 193, 1623 (2003)   DOI
24 R. Massart, IEEE T. Magn., 17, 1247 (1981)   DOI
25 M. Joubert, C. Delaite, E. Bourgeat-Lami, and P Dumas, J. Polym. Sci.; Part A: Polym. Chem., 42, 1976 (2004)   DOI   ScienceOn
26 M. Moller, F. Nederberg, L. S. Lim, and R Kange, et al., J. Polym. Sci.; Part A: Polym. Chem., 39, 3529 (2001)   DOI   ScienceOn
27 K. Ishihara, M. Kubota, and H. Yamamoto, Synlett, 3, 265 (1996)