Polycarbonate-SAN copolymer interaction

Callaghan, T. A.; Takakuwa, K.; Paul, Donald R; Padwa, Allen R.

doi:10.1016/0032-3861(93)90503-3

Cited by 102 publications

(67 citation statements)

References 68 publications

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“…These differences can be very narrow in blends of polycarbonate (PC) and poly(styrene-acrylonitrile) (SAN), when the acrylonitrile content is adjusted in a way to match the maximum blend compatibility. At acrylonitrile contents of around 25 wt.-% a maximum of interfacial thickness [22,23] and a minimum of interfacial energy [22][23][24][25] can be observed in PC/SAN systems. Commercial blends of PC and acryl-butadiene-styrene (ABS) are most frequently adjusted close to these specific AN contents as they correspond to the maximum synergisms, e.g., in toughness and ease of processing.…”

Section: Introductionmentioning

confidence: 90%

Selective Localization and Migration of Multiwalled Carbon Nanotubes in Blends of Polycarbonate and Poly(styrene‐acrylonitrile)

Göldel

Kasaliwal

Pötschke

2009

Macromol. Rapid Commun.

316

190

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Multiwalled carbon nanotubes (MWNTs) have been introduced into blends of polycarbonate (PC) and poly(styrene-acrylonitrile) (SAN) by melt mixing in a microcompounder. Co-continuous blends are prepared by either pre-compounding low amounts of nanotubes into PC or SAN or by mixing all three components together. Interestingly, in all blends, regardless of the way of introducing the nanotubes, the MWNTs were exclusively located within the PC phase, which resulted in much lower electrical resistivities as compared to PC or SAN composites with the same MWNT content. The migration of MWNTs from the SAN phase into the PC phase during common mixing is explained by interfacial effects.

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Section: Introductionmentioning

confidence: 90%

Selective Localization and Migration of Multiwalled Carbon Nanotubes in Blends of Polycarbonate and Poly(styrene‐acrylonitrile)

Göldel

Kasaliwal

Pötschke

2009

Macromol. Rapid Commun.

316

190

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“…Reported observations of shifts in glass transitions on blending of PC and styrene-co-acrylonitrile (SAN), which forms the matrix phase of the ABS copolymer, are not due to partial miscibility but can be attributed 14,15 to a redistribution or transfer of low molecular-weight species between phases.…”

Section: Model Correlation With Practical Observationsmentioning

confidence: 96%

Blend morphology development during melt flow: Correlation of a model concept based on dynamic phase volume with practical observations

Namhata

Guest

Aerts

1999

J. Appl. Polym. Sci.

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An approach is first developed that can be used to identify the global morphology of an immiscible two-phase polymer-polymer blend under shear flow. The basis for the modeling is the concept of a dynamic phase volume; this is based on relative abilities of the respective phases to flow when under stress, and determined by the actual phase volume fraction and the viscosity ratio between phases. One result of the modeling is a schematic diagram providing guidelines for morphology development during melt processing in a nonuniform stress field. Bisphenol A polycarbonate(PC)/ ABS blends were studied as an immiscible system, using variations of component ratio and viscosity ratio at constant composition. Blend morphology was characterized by scanning electron microscopy and solid-state dynamic mechanical spectroscopy. Model predictions correlate well with experimental observations of the frozen-in solid-state morphology following injection molding. Discussion also cover the utility of the model for blend design and limitations of the modeling approach.

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“…The application of blends with phase-separated structures is often limited because of their poor adhesion at the weld. [11][12][13][14][15] Other problems stem from the physical (or chemical) aging of butadiene rubber. Butadiene rubber, containing a double bond in its repeat unit, undergoes physical (or chemical) aging caused by ultraviolet (UV) radiation in outdoor applications.…”

Section: Introductionmentioning

confidence: 99%

“…For these reasons, blends of PC with ABS materials have been commercially available for many years. [1][2][3][4][5][6][7][8][9][10][11] However, these blends have two main drawbacks. In a typical PC/ABS blend, all rubber particles within the styreneco-acrylonitrile (SAN) copolymer form a dispersed phase in the matrix composed of PC and SAN.…”

Section: Introductionmentioning

confidence: 99%

Polycarbonate/acrylonitrile–styrene–acrylic elastomer terpolymer blends with enhanced interfacial adhesion and surface gloss

Seo

Kim

et al. 2005

J of Applied Polymer Sci

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A blend of bisphenol A polycarbonate (PC) and an acrylonitrile-styrene-acrylic elastomer (ASA) terpolymer with high surface gloss and excellent interfacial properties was developed for automobile applications. Because PC and the styrene-co-acrylonitrile (SAN) copolymer that formed the matrix in the PC/ASA blend were not miscible, two different types of compatibilizers were examined to improve the compatibility of the blend. A diblock copolymer composed of tetramethyl polycarbonate and poly(methyl methacrylate) (PMMA) was more effective than PMMA in increasing interfacial adhesion between PC and SAN. The surface gloss of the PC/ASA blend was always lower than that of the pure ASA included in the blend because of PC existing at the surface of the injection-molding specimen. The PC/ASA blend with optimum surface gloss and enhanced interfacial adhesion was developed through the control of the molecular weight of PC and the compatibilizer.

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Polycarbonate-SAN copolymer interaction

Cited by 102 publications

References 68 publications

Selective Localization and Migration of Multiwalled Carbon Nanotubes in Blends of Polycarbonate and Poly(styrene‐acrylonitrile)

Selective Localization and Migration of Multiwalled Carbon Nanotubes in Blends of Polycarbonate and Poly(styrene‐acrylonitrile)

Blend morphology development during melt flow: Correlation of a model concept based on dynamic phase volume with practical observations

Polycarbonate/acrylonitrile–styrene–acrylic elastomer terpolymer blends with enhanced interfacial adhesion and surface gloss

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