The time of flight static secondary negative ion mass spectra of poly(methylmethacrylate), poly(ethylmethacrylate), and poly(methylmethacrylate‐co‐ethylmethacrylate). Ion structures and quantification

Lub, Johan; Vroonhoven, F.C.B.M. van; Leyen, D. van; Benninghoven, A.

doi:10.1002/polb.1989.090271011

Cited by 45 publications

(20 citation statements)

References 11 publications

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“…These results indicate that (7 can directly be correlated to the geometrical size of sputtered molecules. a seems to be independent of matrix effects or the charge state of the desorbed species.…”

Section: Disappearance Cross Sections and Transformation Probabilimentioning

confidence: 70%

Time-of-flight secondary ion mass spectrometry of polymer materials

Leyen

Hagenhoff

Niehuis

et al. 1989

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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Articles you may be interested inTime-of-flight secondary ion mass spectrometry with transmission of energetic primary cluster ions through foil targets Rev. Sci. Instrum. 85, 033107 (2014); 10.1063/1.4869036Self-assembled monolayers for polymer and protein cationization with time-of-flight secondary ion mass spectrometry J.Timeofflight static secondary ion mass spectrometry of additives on polymer surfaces J. Vac. Sci. Technol. A 9, 1307 (1991); 10.1116/1.577617 MASTIF: Mass analysis of secondaries by timeofflight technique. A new approach to secondary ion mass spectrometry Rev. Sci. Instrum. 60, 3188 (1989);A pulsed alkaliion gun for timeofflight secondary ion mass spectrometry Rev.Secondary ion formation from polystyrene standards with well-defined molecular weight distributions between 10 3 and 10 6 amu has systematically been investigated. Maximum yields of cationized fragments and oligomers are obtained from silver substrates covered by about one monolayer of polymer material. Intact o1igomers of polystyrene are detected in the mass range up to 10 000 amu. Disappearance cross sections of sputtered molecules are correlated to the size of the des orbed species and increase almost linearly with mass. Transformation probabilities of catlonized oligomers decrease by about three orders of magnitude between 1000 and 10 000 amu. Number and weight average molecular weights (M", Mw) determined from peak intensities of intact polymer molecules compare well with data from gel permeation chromatography, A correction of Mn and Mw for decreasing transformation probabilities is necessary for broad molecular weight distributions. The formation of high molecular weight fragment ions can be explained by a statistical main chain scission. For polystyrenes with Mn > 10 000 amu the emission offragment ions in the mass range between 500 and 5000 amu seems to be independent of the chain length of the original polymer.

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Section: Disappearance Cross Sections and Transformation Probabilimentioning

confidence: 70%

Time-of-flight secondary ion mass spectrometry of polymer materials

Leyen

Hagenhoff

Niehuis

et al. 1989

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

Self Cite

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“…There is a claim that careful “ratioing” of MS intensities yields copolymer sequence (Galuska, 1996). Other systems studied include copoly (ether‐ester)s (Bhatia & Burrell, 1991; Burrell, Bhatia, & Michael RS, 1994) glycolide/trimethylene carbonate copolymers (Brinen et al, 1993; Brinen, Greenhouse, & Jarrett, 1991), ethylene/vinylacvetate (Galuska, 1994), nylon6/nylon66 (Briggs, 1987), and some copolymers containing ethyl methacrylate (Briggs & Ratner, 1988; Lub et al, 1989).…”

Section: Copolymer Compositionmentioning

confidence: 99%

Mass spectra of copolymers

Montaudo¹

2002

Mass Spectrometry Reviews

104

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Recent and older literature (covering the last 12-13 years) in the field of mass spectra of random and block copolymers is reviewed. A detailed description is given of the information on copolymer properties that can be recovered from the analysis of the low-mass region of the spectrum (the region below 500 Da) and the high-mass region. The features of mass spectra of copolymers obtained by different synthetic routes are discussed, such as free radical, condensation, ring-chain equilibration, microbial synthesis, ring-opening, simple anionic, cationic, Ziegler-Natta, and/or metallocene catalysis, along with some random and block copolymers that occur in Nature. The emphasis is on copolymer composition and average molar mass determination, and on the benefits of coupling mass spectrometry (MS) with separation techniques such as size-exclusion chromatography (SEC) and high performance liquid chromatography (HPLC).

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“…In that investigation, H 2 O was replaced by D 2 O in order to discriminate the H contributions coming from the polymer itself and the atmospheric moisture from the water deliberately mixed to the plasmogen gas. This approach exploited the high sensitivity and selectivity of the SIMS technique for the detection of H isotopes contained in molecular ion fragments present in the outermost layer of the specimen, a capability that is out of reach of XPS . The H‐D exchange in the surface region was thoroughly studied.…”

Section: Introductionmentioning

confidence: 99%

Molecular Surface Analysis and Depth-Profiling of Polyethylene Modified by an Atmospheric Ar-D₂O Post-Discharge

Cristaudo

Collette

Tuccitto

et al. 2016

Plasma Process. Polym.

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The injection of water vapor into ambient “open air” plasmas for the treatment of polymers represents a promising functionalization route for industrial and medical applications. The present study reports a scientist‐independent methodology, based on the ToF‐SIMS (time‐of‐flight secondary ion mass spectrometry) technique coupled with PCA/Wavelet‐PCA (principal component analysis), to probe the (sub) surface chemical/structural modifications induced by an atmospheric Ar‐D2O post‐discharge on low density polyethylene (LDPE) films as a function of two external plasma parameters, namely sample‐torch distance and treatment time. The SIMS characterization identifies two different families of samples (type I and II) as a function of time and distance. The highest reactivity of the D2O vapors with the LDPE films is achieved for times of few tens of seconds at a distance of 5 mm from the plasma source.

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The time of flight static secondary negative ion mass spectra of poly(methylmethacrylate), poly(ethylmethacrylate), and poly(methylmethacrylate‐co‐ethylmethacrylate). Ion structures and quantification

Cited by 45 publications

References 11 publications

Time-of-flight secondary ion mass spectrometry of polymer materials

Time-of-flight secondary ion mass spectrometry of polymer materials

Mass spectra of copolymers

Molecular Surface Analysis and Depth-Profiling of Polyethylene Modified by an Atmospheric Ar-D₂O Post-Discharge

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The time of flight static secondary negative ion mass spectra of poly(methylmethacrylate), poly(ethylmethacrylate), and poly(methylmethacrylate‐co‐ethylmethacrylate). Ion structures and quantification

Cited by 45 publications

References 11 publications

Time-of-flight secondary ion mass spectrometry of polymer materials

Time-of-flight secondary ion mass spectrometry of polymer materials

Mass spectra of copolymers

Molecular Surface Analysis and Depth-Profiling of Polyethylene Modified by an Atmospheric Ar-D2O Post-Discharge

Contact Info

Product

Resources

About

Molecular Surface Analysis and Depth-Profiling of Polyethylene Modified by an Atmospheric Ar-D₂O Post-Discharge