Thermal degradation of bisphenol A polycarbonate

Abbås, Kent B.

doi:10.1016/0032-3861(80)90251-7

Cited by 56 publications

(23 citation statements)

References 6 publications

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“…28 PC is susceptible to varities of chemical process by thermal and oxidative degradation mechanism at elevated temperature during melt processing. [29][30][31][32][33][34][35] PC can be modified and tailored by blending with other polymers for use in demanding applications particularly when its processability and impact strength is important. 36 Researchers 37,38 have made attempts to blend PC with Acrylonitrile-Butadiene-Styrene copolymer (ABS) to modify the properties of PC for commercial application.…”

Section: Introductionmentioning

confidence: 99%

Retracted: Mechanical and thermal properties enhancement of polycarbonate nanocomposites prepared by melt compounding

Nayak

Mohanty

Samal

2010

J of Applied Polymer Sci

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Polycarbonate (PC)/layered silicate nanocomposites were prepared by melt blending technique followed by injection molding from sodium montmorillonite (Na þ -MMT) and a series of organoclay (OMMT-I, Cloisite 20A, and Cloisite15A). The effect of clay types on the mechanical, morphological, and thermal behavior of PC matrix has been investigated. The structure and morphology of the nanocomposites were determined by wide angle Xray diffraction and transmission electron microscopy. Morphological observation revealed that the organoclay platelets are best exfoliated in PC/Cloisite15A nanocomposites whereas Na þ -MMT clay platelets are poorly dispersed in PC/Na þ -MMT nanocomposites. Differential scanning calorimetry results showed the existence of glass transition temperature (T g ) of PC and the nanocomposites. Thermogravimetric analysis indicated that the increase in onset decomposition temperature of nanocomposites mainly depend on the type of clay and organic modifier. The effect of organoclay on the storage modulus (E 0 ), loss modulus (E 00 ), and damping factor (tan d) as a function of temperature was measured by dynamic mechanical analysis.

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Section: Introductionmentioning

confidence: 99%

Retracted: Mechanical and thermal properties enhancement of polycarbonate nanocomposites prepared by melt compounding

Nayak

Mohanty

Samal

2010

J of Applied Polymer Sci

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“…While thermal degradation of polyesters takes place at an appreciable rate in the temperature range usually employed for PC/polyester meltmixing (270-30ODC), polycarbonates are more thermally stable under the same conditions and the effects of thermal chain scission during reactive blending can usually be neglected [86].…”

Section: Side Reactionsmentioning

confidence: 99%

Effects of Catalysts in the Reactive Blending of Bisphenol A Polycarbonate with Poly(alkylene terephthalate)s

Pilati¹,

Fiorini²,

Berti³

1999

Transreactions in Condensation Polymers

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“…However, in most of the cases, not only the intercalated clay morphology but also the development of the color in the nanocomposites limited the application of PC/clay nanocomposites. PC is susceptible to a variety of chemical processes caused by thermal and oxidative degradation mechanism at elevated temperature during melt processing18–21; these reactions may be significantly aggravated in presence of nanofillers. A specific concern is that the quaternary ammonium alkyl surfactants in the organoclay undergo complex degradation reaction at high temperature (≥180°C) 13, 14, 22.…”

Section: Introductionmentioning

confidence: 99%

Preparation of highly exfoliated and transparent polycarbonate/clay nanocomposites by melt blending of polycarbonate and poly(methyl methacrylate)/clay nanocomposites

Dhibar

Kar

Khatua

2012

J of Applied Polymer Sci

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In this report, we introduce an industrially feasible method that involves melt blending of polycarbonate (PC) and in situ suspension polymerized exfoliated PMMA/clay (Na þ MMT) nanocomposites to prepare highly exfoliated PC/clay nanocomposites. The rational behind this is that PC is well known to form miscible blend with low molecular weight PMMA. Thus, low molecular weight PMMA/clay exfoliated nanocomposites were prepared by suspension polymerization using preexfoliated clay (Na þ MMT) in water media during the polymerization. The (80/20 w/w) PC/PMMA blends without and with Na þ MMT showed single glass transition temperature (T g ), indicating complete miscibility of the polymers in the blend. The surface morphologies of the composites were studied by scanning electron micros-copy (SEM). Wide-angle X-ray diffraction and transmission electron microscope (TEM) studies of the nanocomposites revealed delamination of the clay silicate layers in the PC matrix. The properties of the (80/20 w/w) PC/PMMA-Na þ MMT nanocomposites were significantly higher than that of the pure PC. Moreover, retention of the optical transparency of PC in the nanocomposites could be due to the presence of unmodified clay (Na þ MMT), which did not contain any organic modifier (quaternary ammonium salt) that could decompose during melt mixing of PC at high temperature (% 280 C). V C 2012 Wiley Periodicals, Inc. J Appl Polym Sci 125: E601-E609, 2012

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Thermal degradation of bisphenol A polycarbonate

Cited by 56 publications

References 6 publications

Retracted: Mechanical and thermal properties enhancement of polycarbonate nanocomposites prepared by melt compounding

Retracted: Mechanical and thermal properties enhancement of polycarbonate nanocomposites prepared by melt compounding

Effects of Catalysts in the Reactive Blending of Bisphenol A Polycarbonate with Poly(alkylene terephthalate)s

Preparation of highly exfoliated and transparent polycarbonate/clay nanocomposites by melt blending of polycarbonate and poly(methyl methacrylate)/clay nanocomposites

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