Analysis of Synthetic Polymers and Rubbers

Smith, Patrick B.; Pasztor, Andrew J.; McKelvy, Marianne L.; Meunier, David M.; Froelicher, Stephen W.; Wang, F. C.-Y.

doi:10.1021/a19700020

Cited by 27 publications

(8 citation statements)

References 337 publications

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“…With the recent development of powerful soft ionization techniques, such as matrix-assisted laser desorption/ionization (MALDI) and electrospray ionization (ESI), mass spectrometry (MS) has become widely used for polymers. − The strength of MS is that it can provide the molecular formula for each component in a complex mixture such as polymers. The formula information coupled with knowledge of the chemistry is used to determine structural information such as end groups and monomer units.…”

mentioning

confidence: 99%

Gel Permeation Chromatography Coupled to Fourier Transform Mass Spectrometry for Polymer Characterization

1999

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We report an on-line coupling of gel permeation chromatography (GPC) to Fourier transform mass spectrometry (FTMS) using a modified commercial electrospray ionization (ESI) interface. Selected oligomer profiles for the sodiated (1+ through 5+ charge states) oligomer ions of a narrow-molecular-weight poly(methyl methacrylate) were generated and used for obtaining a calibration curve. Using the MS-generated calibration curve and the refractive index response for quantification, an accurate molecular weight distribution was calculated and showed an excellent agreement with the value specified by the supplier. GPC/ESI/FTMS also allowed for an unequivocal end-group determination and characterization of a secondary distribution due to the formation of cyclic reaction products. We analyzed a glycidyl methacrylate/butyl methacrylate copolymer with a broad molecular weight distribution, where fractionation and high resolving power were required for adequate characterization. Molecular weight distribution data showed the advantage of coupling high-resolution MS and GPC to overcome the difficulty of analyzing polydisperse polymers with MS alone.

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confidence: 99%

Gel Permeation Chromatography Coupled to Fourier Transform Mass Spectrometry for Polymer Characterization

1999

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“…In particular, it is desirable to characterize the morphology of polymers as non-destructively as possible. 1 The particle diameter is an essential property influencing the fluidity and stability of polymers as raw materials and various physical properties as products. 2 In recent years, water-based emulsions forming a polymer latex have become increasingly significant because of environmental concerns over the use of organic solvents for polymers.…”

Section: Introductionmentioning

confidence: 99%

Non‐destructive method for the quantification of the average particle diameter of latex as water‐based emulsions by near‐infrared Fourier transform Raman spectroscopy

Ito

Kato

Ona

2002

J Raman Spectroscopy

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Vibrational spectroscopy is utilized to characterize compounds, but it has never been applied to quantitative morphological analysis of polymers in a mass. By using near-infrared Fourier transform Raman spectroscopy coupled with multivariate data analysis, the average particle diameter of macroscopic size in water-based latex emulsions was successfully quantified with correlation coefficients >0.95, both in calibration (known samples, n = 36) and in prediction (unknown samples, n = 11) against conventionally measured values obtained by the dynamic laser diffraction scattering method. This method is valid for samples of various monomer compositions together with various fluorescence and Rayleigh scattering intensities causing different background levels in the spectra.

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“…Recent studies report hyphenated techniques for antioxidant determination at low concentration level such as gas chromatography coupled with mass spectrometry (GC-MS) [8], supercritical fluid and enhanced solvent extraction [9], supercritical fluid extraction combined with GC-MS [10], mass spectrometry coupled with HPLC (MS-HPLC) [11], size exclusion chromatography with on line UV, RMN, and MS detection [12], capillary liquid chromatography [13], and pyrolysis and pyrolysis-GC techniques [14,15].…”

Section: Introductionmentioning

confidence: 99%

Derivative spectrophotometry in the determination of phenyl-β-naphthylamine used as an antioxidant in rubber mixtures

Moldovan

Alexandrescu

2002

Analytical and Bioanalytical Chemistry

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A method for the determination of phenyl-beta-naphthylamine (PBN) in ternary mixtures by second-derivative spectrophotometry is described. The procedure works without any separation step of PBN from the other polymer additives. By applying the second-derivative spectrophotometry, Beer's law was valid over the range 0.25-10 micro g mL(-1). The proposed method has been applied to the determination PBN in synthetic ternary mixtures and rubber samples. A comparative study of the results obtained using the second and the third-derivative spectrophotometric methods is presented and evaluated. The derivative spectrophotometric method indicated that the amount of PBN found after extraction from the rubber samples was 0.97+/-0.02 g/100 g of sample.

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Analysis of Synthetic Polymers and Rubbers

Cited by 27 publications

References 337 publications

Gel Permeation Chromatography Coupled to Fourier Transform Mass Spectrometry for Polymer Characterization

Gel Permeation Chromatography Coupled to Fourier Transform Mass Spectrometry for Polymer Characterization

Non‐destructive method for the quantification of the average particle diameter of latex as water‐based emulsions by near‐infrared Fourier transform Raman spectroscopy

Derivative spectrophotometry in the determination of phenyl-β-naphthylamine used as an antioxidant in rubber mixtures

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