Degradation of polymer blends—III. Radiolysis of blends of poly(methyl methacrylate) with styrene-acrylonitrile copolymers

Daro, Arlette; Zabeau, Françoise; David, Christiane

doi:10.1016/0014-3057(89)90211-5

Cited by 7 publications

(1 citation statement)

References 10 publications

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“…If PPC contain polymeric sensitiser constituents, chain scission reactions become more important, while cross-linking of polymer chains, which can also occur, appears to be less significant. No preferential degradation of a particular component was observed in studies of the blends of LLDPE 332 or LDPE 333,334 and styrene ± butadiene copolymer.…”

Section: Fields Of Application Of In Situ Prepared Polymer ± Polymer ...mentioning

confidence: 93%

Molecular polymer–polymer compositions. Synthetic aspects

Pomogailo¹

2002

Russ. Chem. Rev.

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The main ways of improving the compatibility of The main ways of improving the compatibility of polymer ± polymer compositions containing polyolefins as one polymer ± polymer compositions containing polyolefins as one component are considered. Considerable attention is given to the component are considered. Considerable attention is given to the preparation of polyolefins in the presence of an ingredient bound preparation of polyolefins in the presence of an ingredient bound to the catalyst in the catalytic (including consecutive) polymer-to the catalyst in the catalytic (including consecutive) polymerisation of olefins. The so-called reactor blends and the synthesis isation of olefins. The so-called reactor blends and the synthesis and structure of diblock and conducting composites are described. and structure of diblock and conducting composites are described. The important role of compatibilisation of polymers of different The important role of compatibilisation of polymers of different nature with the use of a third component is pointed out. The nature with the use of a third component is pointed out. The formation mechanism of molecular compositions, the structure formation mechanism of molecular compositions, the structure and properties of the intermediate layer and the main fields of and properties of the intermediate layer and the main fields of application of synthetic polyolefin ± polymer compositions are application of synthetic polyolefin ± polymer compositions are discussed. The bibliography includes 335 references discussed. The bibliography includes 335 references. .

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Section: Fields Of Application Of In Situ Prepared Polymer ± Polymer ...mentioning

confidence: 93%

Molecular polymer–polymer compositions. Synthetic aspects

Pomogailo¹

2002

Russ. Chem. Rev.

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Radiation Chemical Yields:GValues

Perera

Hill

1999

The Wiley Database of Polymer Properties

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Influence of reprocessing on the mechanical properties of a commercial polysulfone/polycarbonate blend

Sánchez

Remiro

Nazábal

1992

Polymer Engineering & Sci

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Commercial polysulfone/polycarbonate (PSU/PC) polymer blends were repre cessed up to five times to determine the influence that reprocessing has on their structure and physical properties. All the high strain properties, mainly ductility, significantly decreased under harsh processing conditions, such as five cycles at 320°C. The results of reprocessing the blends at 320°C have been compared with results at a lower temperature and also with those of the separate components with the aim of clarifying the origin of the degradation. These results plus Fourier transform infrared spectroscopy (FTIR), dynamic mechanical analysis, and melt flow index measurements (MFI) indicate that the presence of the two polymers together clearly decreases the resistance to degradation of each component. Moreover, degradation under the stated conditions is mainly thermal and does not change the chemical nature of the blends. However, a clear decrease in molecular weight was observed both by viscosimetry and MFI measurements as was a shift to higher temperatures of the low temperature secondary transition of both PC and PSU. Both molecular weight and secondary transition changes usually deteriorate mechanical properties but not in the degree observed here. This probably means that the fine and difficult-to-observe structure of the blend has also changed.

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Degradation of polymer blends—III. Radiolysis of blends of poly(methyl methacrylate) with styrene-acrylonitrile copolymers

Cited by 7 publications

References 10 publications

Molecular polymer–polymer compositions. Synthetic aspects

Molecular polymer–polymer compositions. Synthetic aspects

Radiation Chemical Yields:GValues

Influence of reprocessing on the mechanical properties of a commercial polysulfone/polycarbonate blend

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