Evidence for the low thermal stability of poly(methyl methacrylate) polymer produced by atom transfer radical polymerisation

Borman, Christopher D.; Jackson, Anthony T.; Bunn, Alan; Cutter, A.L; Irvine, Derek J.

doi:10.1016/s0032-3861(00)00020-3

Cited by 96 publications

(93 citation statements)

References 17 publications

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“…The choice of the cation to be adducted to polymer molecules was also shown to have a great impact in the production of informative fragment ions under CID conditions. For example, while dissociation of protonated poly(methyl methacrylate) (PMMA) was shown to proceed via charge-induced eliminations of methanol from the pendant ester groups [4], alkali-cationized PMMA mainly dissociates to yield low-mass radical ions carrying one of the original chain ends, according to charge-remote mechanisms [5][6][7][8]. Within the same class of metals, the nature of the adducted cation can also influence MS/MS results, as shown in the case of poly(ethylene glycol) for which dissociation of lithiated molecules generates polymeric product ions after internal backbone cleavages or rearrangements, whereas a bare alkali cation was often the only reported product ion arising from dissociation of sodium or potassium adducts [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Tandem Mass Spectrometry of Trimethylsilyl-Terminated Poly(Dimethylsiloxane) Ammonium Adducts Generated by Electrospray Ionization

Fouquet

Humbel

Charles

2011

J. Am. Soc. Mass Spectrom.

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Ammonium adducts of trimethylsilyl-terminated poly(dimethylsiloxane) (CH 3 -PDMS) produced by electrospray ionization were submitted to collision induced dissociation and revealed a particular MS/MS behavior: the same three main product ions at m/z 221, 295, and 369 were always generated in very similar relative abundances regardless of the size of the precursor ion. Combining accurate mass measurements and ab initio calculation allowed very stable cyclic geometries to be obtained for these ionic species. Dissociation mechanisms were proposed to account for the three targeted ions to be readily generated in a two-step or a three-step reaction from any CH 3 -PDMS ammonium adducts. A second set of three product ions was also observed with low abundance at m/z 207, 281, and 355, which were shown in MS 3 experiments to be formed in secondary reactions. An alternative dissociation process was shown to consist of a concerted elimination of ammonia and methane and the need for a methyl of an end-group to be involved in the released methane molecule would account for this reaction to mainly proceed from the smallest precursor ions.

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Section: Introductionmentioning

confidence: 99%

Tandem Mass Spectrometry of Trimethylsilyl-Terminated Poly(Dimethylsiloxane) Ammonium Adducts Generated by Electrospray Ionization

Fouquet

Humbel

Charles

2011

J. Am. Soc. Mass Spectrom.

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“…will be obtained after depolymerizaion. 28 To decrease this adverse effects on thermal stability, various efforts have been made. Schmalz and Reinicke designed to replace the terminal halogen of the ATRP-derived polymer with azide and the subsequent click reaction by alkynyl compounds, which confirmed effectively.…”

Section: 12mentioning

confidence: 99%

Star‐shaped POSS–methacrylate copolymers with phenyl–triazole as terminal groups, synthesis, and the pyrolysis analysis

Qiang

Chen

et al. 2014

J of Applied Polymer Sci

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Star-shaped polyhedral oligomeric silsesquioxane (POSS)-methacrylate hybrid copolymers with phenyl-triazole as terminal groups had been designed and synthesized via sequential atom transfer radical polymerization (ATRP), azidation, and phenylacetylene-terminated procedures, and the hybrid copolymers here could be denoted as POSS-(PXMA-Pytl) 8 , where X can be M, B, L, and S, represented four different methacrylate monomers, such as methacrylate (MMA), butyl methacrylate (BMA), lauryl methacrylate (LMA), and stearyl methacrylate (SMA), respectively. Thermal gravimetric analysis (TGA) and in situ Fourier transform infrared spectroscopy (FTIR) were applied for studying the thermal stability and degradation mechanism, and it was found that all of the POSS-(PXMA-Cl) 8 and POSS-(PXMA-Pytl) 8 copolymers exhibited excellent thermal stabilities, which had great potential in heat-resistant material application. Different tendencies of decomposition temperatures at 5% and 10% weight loss (T 5 and T 10 ) dependent on the side-chain length and terminal group species were investigated respectively. The longer alkyl side chains of the monomers, the lower thermal stabilities, and enhanced T 5 and T 10 were also shown with the introduction of phenyl-triazole groups instead of chlorine groups.

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“…As a result of these findings, it must be concluded MALDI is a choice method for analyzing polymer standards [25], including standards used for the generation of Mark -Houwink -Sakurada parameters [26], and the PMMA standards used in this study. Previously, MALDI has been used to characterize biopolymers [16,27 -29], synthetic polymers [19,30 -32], and dendrimers [33,34], and to study the thermal degradation of PMMA [35]; however, no previous work has been done in which MALDI was used to study radiation damage of a polymer sample.…”

Section: Introductionmentioning

confidence: 99%

A MALDI, TGA, TG/MS, and DEA study of the irradiation effects on PMMA

Tatro

Baker

Bisht

et al. 2003

Polymer

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Evidence for the low thermal stability of poly(methyl methacrylate) polymer produced by atom transfer radical polymerisation

Cited by 96 publications

References 17 publications

Tandem Mass Spectrometry of Trimethylsilyl-Terminated Poly(Dimethylsiloxane) Ammonium Adducts Generated by Electrospray Ionization

Tandem Mass Spectrometry of Trimethylsilyl-Terminated Poly(Dimethylsiloxane) Ammonium Adducts Generated by Electrospray Ionization

Star‐shaped POSS–methacrylate copolymers with phenyl–triazole as terminal groups, synthesis, and the pyrolysis analysis

A MALDI, TGA, TG/MS, and DEA study of the irradiation effects on PMMA

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