Laser-induced decomposition of 2,2-dimethoxy-2-phenylacetophenone and benzoin in methyl methacrylate homopolymerization studied via matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

Barner-Kowollik, C., Vana, P., & Davis, T. P. (2002) Laser-induced decomposition of 2,2-dimethoxy-2-phenylacetophenone and benzoin in methyl methacrylate homopolymerization studied via matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Journal of Polymer Science, Part A: Polymer Chemistry, 40(5).

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Abstract

Pulsed laser polymerization (PLP) experiments were performed on the bulk polymerization of methyl methacrylate (MMA) at -34 °C. The aim of this study was to investigate the polymer end groups formed during the photoinitiation process of MMA monomer using 2,2-dimethoxy-2-phenylacetophenone (DMPA) and benzoin as initiators via matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry. Analysis of the MALDI-TOF spectra indicated that the two radical fragments generated upon pulsed laser irradiation show markedly different reactivity toward MMA: whereas the benzoyl fragment-common to both DMPA and benzoin-clearly participates in the initiation process, the acetal and benzyl alcohol fragments cannot be identified as end groups in the polymer. The complexity of the MALDI-TOF spectrum strongly increased with increasing laser intensity, this effect being more pronounced in the case of benzoin. This indicates that a cleaner initiation process is at work when DMPA is used as the photoinitiator. In addition, the MALDI-TOF spectra were analyzed to extract the propagation-rate coefficient, kp, of MMA at -34 °C. The obtained value of kp = 43.8 L mol-1 s-1 agrees well with corresponding numbers obtained via size exclusion chromatography (kp = 40.5 L mol-1 s-1). © 2002 John Wiley & Sons, Inc. J. Polym. Sci. Part A: Polym. Chem.

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ID Code: 99051
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By :24
Export Date: 5 September 2016
CODEN: JPACE
Correspondence Address: Barner-Kowollik, C.; Ctr. for Adv. Macromolecular Design, Sch. of Chem. Eng. and Indust. Chem., University of New South Wales, Sydney, NSW 2052, Australia; email: t.davis@unsw.edu.au
References: Olaj, O.F., Bitai, I., Gleixner, G., (1985) Makromol Chem, 186, p. 2569; Buback, M., Gilbert, R.G., Hutchinson, R.A., Klumperman, B., Kuchta, F.-D., Manders, B.G., O'Driscoll, K.F., Schweer, J., (1995) Macromol Chem Phys, 196, p. 3267; Beuermann, S., Buback, M., Davis, T.P., Gilbert, R.G., Hutchinson, R.A., Olaj, O.F., Russell, G.T., Van Herk, A.M., (1997) Macromol Chem Phys, 198, p. 1545; Beuermann, S., Buback, M., Davis, T.P., Gilbert, R.G., Hutchinson, R.A., Kajiwara, A., Klumperman, B., Russell, G.T., (2000) Macromol Chem Phys, 201, p. 1355; Buback, M., Hippler, H., Schweer, J., Vögele, H.P., (1987) Macromol Chem Rapid Commun, 8, p. 473; Buback, M., Busch, M., Kowollik, C., (2000) Macromol Theory Simul, 9, p. 442; Kowollik, C., (1999), Ph.D. Thesis, University of GöttingenFischer, H., Baer, R., Hany, R., Verhoolen, I., Walbiner, M., (1990) J Chem Soc Perkin Trans 2, 5, p. 787; Hutchison, J., Lamber, M.C., Ledwith, A., (1973) Polymer, 14, p. 250; Kuhlmann, R., Schnabel, W., (1977) Polymer, 18, p. 1163; Thomson, B., Suddaby, K., Rudin, A., Lajoie, G., (1996) Eur Polym J, 32, p. 239; Zammit, M.D., Davis, T.P., Haddleton, D.M., (1996) Macromolecules, 29, p. 492; Danis, P.O., Karr, D.E., Westmoreland, D.G., Piton, M.C., Christie, D.I., Clay, P.A., Kable, S.H., Gilbert, R.G., (1993) Macromolecules, 26, p. 6684; Schweer, J., Sarnecki, J., Mayer-Posner, F., Muellen, K., Raeder, H.J., Spickermann, J., (1996) Macromolecules, 29, p. 4536; Davis, T.P., O'Driscoll, K.F., Piton, M.C., Winnik, M.A., (1989) Macromolecules, 22, p. 2785; Beuermann, S., Buback, M., Russell, G.T., (1995) Macromol Chem Phys, 196, p. 2493; Olaj, O.F., Vana, P., Kornherr, A., Zifferer, G., (2000) Macromol Rapid Commun, 21, p. 913; Vana, P., (1999), Ph.D. Thesis, University of Vienna, p 27noteZammit, M.D., Davis, T.P., Haddleton, D.M., Suddaby, K.G., (1997) Macromolecules, 30, p. 1915; Davis, T.P., (1994) J Photochem Photobiol A, 77, p. 1; Scaiano, J.C., Tanner, M., Weir, D., (1985) J Am Chem Soc, 107, p. 4396; McGimpsey, W.G., Scaiano, J.C., (1987) J Am Chem Soc, 109, p. 2179; Nielen, M.W.F., (1999) Mass Spectrom Rev, 18, p. 309
Keywords: Initiators, Laser-induced polymers, MALDI, Methyl methacrylate, Propagation-rate coefficient, Desorption, Irradiation, Laser applications, Mass spectrometry, Photoionization, Polymerization, Size exclusion chromatography, Pulsed laser polymerization (PLP), Polymethyl methacrylates, chromatography, laser, polymethyl methacrylate
DOI: 10.1002/pola.10150
ISSN: 0887624X
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 22 Sep 2016 04:50
Last Modified: 22 Sep 2016 04:50

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