Pyrolysis-GC/MS: An alternative approach to characterize cycloolefin copolymers (COC)

Donner, Matthias; Kiesewetter, Jens; Kaminsky, Werner

doi:10.1016/j.jaap.2007.02.011

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…Thermoplastic polymers recently synthesized by means of metallocene‐based catalysts have attracted the attention of many researchers and producers 16–24. Particular interest has been focused on the synthesis and characterization of cycloolefin copolymers (COCs),14, 25–36 which are amorphous thermoplastics obtained by copolymerization of norbornene and ethylene. COCs show remarkable properties, such as stiffness, high chemical resistance, good moisture barrier properties, low moisture absorption, and low density.…”

Section: Introductionmentioning

confidence: 99%

Cycloolefin copolymer/fumed silica nanocomposites

Dorigato

Pegoretti

Fambri

et al. 2010

J of Applied Polymer Sci

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We prepared cycloolefin copolymer (COC)/ fumed silica nanocomposites by melt compounding to study the effect of the filler dimensions (filler surface area) on the physical properties, with particular attention to their thermal, mechanical, and optical behaviors. Thermogravimetric analysis revealed a positive contribution of silica nanoparticles to the thermal degradation resistance of COC, as the decomposition temperature of the nanofilled samples increased by 40C with respect to that of the unfilled matrix. Dynamic mechanical thermal analysis and quasi-static tensile tests of the nanocomposites evidenced a slight stiffening effect, proportional to the nanofiller surface area, without any reduction in the fracture toughness. Creep resistance of the nanocomposites was increased by the addition of silica nanoparticles, especially when high-surface-area nanoparticles were used. The positive effect of the nanoparticles on the viscoelastic and fracture behavior was related to the uniform dispersion of silica aggregates in the matrix. Ultravioletvisible spectrometry measurements evidenced that the original transparency of neat COC was practically maintained after the addition of silica nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Cycloolefin copolymer/fumed silica nanocomposites

Dorigato

Pegoretti

Fambri

et al. 2010

J of Applied Polymer Sci

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“…The detection of low content additives, including fillers, pigments, antioxidants, stabilizers, flame retardants, plasticizers, lubricants and other modifiers in the polymer, was simplified by using a combination of multiple temperature step and selected ion chromatography. [14][15][16] These methods take advantage of thermal desorption to separate the low molecular weight additives before the polymer chain undergoes decomposition. [17][18][19] Wang studied the analysis of the additives in several types of polymer, in order to demonstrate the utility of pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) as a tool for the characterization of such polymeric materials.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Minor Additives and Polymer in Used-stripper Using Pyrolysis-Gas Chromatography/Mass Spectrometry and Electrospray Mass Spectrometry

Koo¹,

Park

Han³

et al. 2009

Bulletin of the Korean Chemical Society

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The trace polymer and additives in used stripper solutions were analyzed by a combination of Py-GC/MS and ESI-MS. In the comparison of the pyrolysates produced by the pyrolysis of the pure stripper and photoresist at 500 o C, the presence of novolac polymer in the used stripper was confirmed by the presence of the characteristic peaks of its pyrolysates, such as those of the methylphenol, di-methylphenol and methylenebis(methylphenol) isomers. The intact trace polymer was measured by ESI-MS, which showed the distribution of oligomers at intervals of 120 Da, indicating di-methylphenol to be the repeat unit. Additional MS/MS measurements demonstrated that the end group is methylphenol and the repeat groups are di-methylphenol. Some modified oligomers caused by the methylation or di-methylation of the repeat unit were also identified. Although the polymer is only present at a trace level in the used stripper, these combined analytical methods provided the means to qualify the stripper solution through the identification and structural determination of the polymer.

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Current literature in mass spectrometry

2008

J. Mass Spectrom.

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Pyrolysis-GC/MS: An alternative approach to characterize cycloolefin copolymers (COC)

Cited by 5 publications

References 32 publications

Cycloolefin copolymer/fumed silica nanocomposites

Cycloolefin copolymer/fumed silica nanocomposites

Analysis of Minor Additives and Polymer in Used-stripper Using Pyrolysis-Gas Chromatography/Mass Spectrometry and Electrospray Mass Spectrometry

Current literature in mass spectrometry

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