Synthesis of 4-arm methyl methacrylate star polymer by atom transfer radical polymerization

Abstract

The synthesis of 4-arm methyl methacrylate star polymer had been achieved successfully by atom transfer radical polymerization using CuCl as catalyst, 2, 2¢- bipyridyl as ligand and pentaerythritol tetrakis (2-bromoisobutyrate) as the initiator. The star polymer was characterized by ¹H-NMR and GPC, by which the precise 4-arm structure of the PMMA was confirmed.

Keywords

living radical polymerization / atom transfer radical polymerization / star polymer / methyl methacrylate

References

[1] Kamigaito M, Ando T, Sawamoto M. Metal-catalyzed living radical polymerization. Chem Rev, 2001, 101(12): 3689–746

[2] Matyjaszewski K, Xia J. Atom transfer radical polymerization. Chem Rev, 2001, 101(9): 2921–90

[3] Wang J S, Matyjaszewski K. Controlled/“living” radical polymerization. atom transfer radical polymerization in the presence of transition-metal complexes. Journal of the American Chemical Society, 1995, 117(20): 5614–15

[4] Gao H, Ohno S, Matyjaszewski K. Low polydispersity star polymers via cross-linking macromonomers by ATRP. J Am Chem Soc, 2006, 128(47): 15111–3

[5] Min K, Gao H, Matyjaszewski K. Preparation of homopolymers and block copolymers in miniemulsion by ATRP using activators generated by electron transfer (AGET). J Am Chem Soc, 2005, 127(11): 3825–30

[6] Hong K, Uhrig D, Mays J W. Living anionic polymerization. Current Opinion in Solid State & Materials Science, 2000, 4(6): 531–538

[7] Schaefgen J R, Flory P J. Synthesis of multichain polymers and investigation of their viscosities. Journal of the American Chemical Society, 1948, 70: 2709–18

[8] Matyjaszewski K, Miller P J, Pyun J, Kickelbick G, Diamanti S. Synthesis and Characterization of Star Polymers with Varying Arm Number, Length, and Composition from Organic and Hybrid Inorganic/Organic Multifunctional Initiators. Macromolecules, 1999, 32(20): 6526–6535

[9] Xu Y, Pan C. Block and Star-Block Copolymers by Mechanism Transformation. 3. S-(PTHF-PSt)4 and S-(PTHF-PSt-PMMA)4 from Living CROP to ATRP. Macromolecules, 2000, 33(13): 4750–4756

[10] Hadjichristidis N. Synthesis of Miktoarm star (micro-star) polymers. Journal of Polymer Science, Part A: Polymer Chemistry, 1999, 37(7): 857–871

[11] Hirao A, Kawasaki K, Higashihara T. Precise synthesis of asymmetric star-shaped polymers by coupling reactions of new specially designed polymer anions with chain-end-functionalized polystyrenes with benzyl bromide moieties. Science and Technology of Advanced Materials, 2004, 5(4): 469–477

[12] Zhang X, Xia J, Matyjaszewski K. End-functional poly(tert-butyl acrylate) star polymers by controlled radical polymerization. Macromolecules, 2000, 33(7): 2340–2345

[13] Kasko A M, Heintz A M, Pugh C. The effect of molecular architecture on the thermotropic behavior of poly[11-(4'-cyanophenyl-4''-phenoxy)undecyl acrylate] and its relation to polydispersity. Macromolecules, 1998, 31(2): 256–271

[14] Heise A, Hedrick J L, Trollss M, Miller R D, Frank C W.Novel starlike poly(methyl methacrylate)s by controlled dendritic free radical initiation. Macromolecules, 1999, 32(1): 231–235

[15] Dayananda K, Dhamodharan R. ATRP of methyl methacrylate using a novel binol ester-based bifunctional initiator. Journal of Polymer Science, Part A: Polymer Chemistry, 2004, 42(4): 902–915

RIGHTS & PERMISSIONS

Higher Education Press and Springer-Verlag Berlin Heidelberg