1999
DOI: 10.1016/s0165-2370(98)00093-x
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Quantitative determination of acrylate-based copolymer retarding layers on drug granules using pyrolysis–gas chromatography

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Cited by 8 publications
(5 citation statements)
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“…In addition to identification Py-GCMS could also be applied for quantitative trace analysis of MP on a polymer specific level if the pyrolysis conditions are highly reproducible to generate a consistent composition of pyrolysis products. , In environmental samples this was seldom done to date and when attempted it was restricted on a few selected polymers (polyvinyl chloride (PVC) and polystyrene (PS), PS and modified polyamides . Very recently a promising thermogravimetric method for PE determination in environmental samples was introduced .…”
Section: Introductionmentioning
confidence: 99%
“…In addition to identification Py-GCMS could also be applied for quantitative trace analysis of MP on a polymer specific level if the pyrolysis conditions are highly reproducible to generate a consistent composition of pyrolysis products. , In environmental samples this was seldom done to date and when attempted it was restricted on a few selected polymers (polyvinyl chloride (PVC) and polystyrene (PS), PS and modified polyamides . Very recently a promising thermogravimetric method for PE determination in environmental samples was introduced .…”
Section: Introductionmentioning
confidence: 99%
“…Monomer identification of commercial dispersions was carried out by Py-GC/MS on the basis of the relative intensity of monomers and monomer-related compounds produced under drastic conditions of thermal degradation, thus assuming a good knowledge of the degradation mechanism which enables to distinguish between primary and secondary pyrolysis products [18,[20][21][22][23]. Figs.…”
Section: Resultsmentioning
confidence: 99%
“…Moreover, the parent alcohols as well as dimeric and oligomeric fragments were also identified [24]. In general, it is assumed that all of the main identified compounds are formed by direct pyrolytic decomposition of copolymers, in analogy with the thermal degradative behavior of reference homopolymers and commercial (meth)acrylic copolymers [18,[22][23][24]. The formation of various minor products of pyrolysis resulting from structural defects and small impurities of the monomers, often present in commercial samples, as well as of products of secondary decomposition of primary pyrolysis products was considered as uninfluent in the process of determination of the qualitative monomeric composition.…”
Section: Resultsmentioning
confidence: 99%
“…[8][9][10][11][12][13] Recent developments have focused on the enhanced detection of low level chemical species in polymers. 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.…”
Section: Introductionmentioning
confidence: 99%