Investigation of miscibility by spectroscopic methods IV. How far is poly(vinyl chloride) miscible with s‐poly(methyl methacrylate) and poly(styrene‐co‐acrylonitrile)? An answer from nonradiative energy transfer

Albert, B.; Jérôme, Robert; Teyssié, Ph.

doi:10.1002/pola.1986.080240313

Cited by 19 publications

(4 citation statements)

References 24 publications

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“…The rubber particles are elongated and spherical, which could be attributable to the easy flow of EPDM rubber of low crosslinking density. The average dimensions of the rubber particles vary from 0.1 to 0.5 μm, which is in accord with the report that effective toughening occurs at an optimum particle size of 0.1–1 μm for SAN 14. The vague interface indicates interfacial penetration between the two phases (i.e., grafting of the SAN molecular chain onto EPDM improves the miscibility between the two phases).…”

Section: Resultssupporting

confidence: 86%

Synthesis of high rubber styrene–EPDM–acrylonitrile graft copolymer and its toughening effect on SAN

Zeng

Wang

Cai

et al. 2004

J of Applied Polymer Sci

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High rubber styrene-EPDM-acrylonitrile (AES) was prepared by the graft copolymerization of styrene (St) and acrylonitrile (AN) onto ethylene-propylene-diene terpolymer (EPDM) in n-heptane/toluene cosolvent using benzoyl peroxide as an initiator. The effects of reaction conditions, such as reaction temperature, initiator concentration, EPDM content, the solvent component, and reaction time, on the graft copolymerization are discussed. In addition, according to the research on mechanical properties of the SAN/AES blend, a remarkable toughening effect of AES on SAN resin was found. By means of scanning electron microscopy, the toughening mechanism is proposed to be crazing initiation from rubber particles and shear deformation of SAN matrix. Uniform dispersion of rubber particles, as shown by transmission electron microscopy, is attributed to the good compatibility of SAN and AES.

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Section: Resultssupporting

confidence: 86%

Synthesis of high rubber styrene–EPDM–acrylonitrile graft copolymer and its toughening effect on SAN

Zeng

Wang

Cai

et al. 2004

J of Applied Polymer Sci

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“…This blend was first studied by Shurer et al6, using dynamic mechanical analysis. Subsequently, the miscibility of the blend has been studied by thermally stimulated depolarization current method (TSDC),7 fluorescence nonradiative energy transfer,8 X‐ray diffraction9, and NMR 10. Theoretical studies have also been undertaken for this blend 11.…”

Section: Introductionmentioning

confidence: 99%

Correlating miscibility of PVC/PMMA blend with polymer chain orientation

Deshpande

Singh

2006

J of Applied Polymer Sci

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Blends of poly (vinyl chloride) (PVC) and poly (methyl methacrylate) (PMMA) with varying concentrations of the polymers were prepared in a film form by standard solution casting method, using methyl ethyl ketone (MEK) as a common solvent. The miscibility of the blend was studied by dynamic mechanical analysis. The chain orientation behaviors of PVC and PMMA in the stretched blend films were studied by infrared dichroism method. Up to 60 wt % PVC concentration in the blend, PVC showed negative values for orientation function whereas PMMA showed independent positive values for its orientation function. On further increasing PVC concentration in the blend, the orientation function of PVC flipped to positive values, and both PVC and PMMA showed same magnitude and trend in orientation behavior. The chain orientation behavior of individual polymers in the immiscible compositions of the blend was observed to be independent, while there was a high degree of cooperation for chain orientation in the miscible composition. Change in the miscibility of the blend was simultaneously accompanied by conformational changes in PVC. The change in orientation behavior is interpreted in terms of curling of polymer chains in the immiscible phase. The polymer chain curling hypothesis used here is applicable independent of the type of polymers in the blend.

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“…The fluorescence technique, nonradiative energy transfer (NRET),3 has been applied to polymer blends by Albert et al 4 In this method the two polymers composing the blend are labeled with a donor and an acceptor. The efficiency of the energy transfer from donor to acceptor depends on the distance r-6.…”

Section: Introductionmentioning

confidence: 99%

Miscibility in PMMA/poly(vinylidene fluoride) blends, studied by fluorine-19-enhanced carbon 13 CPMAS NMR

Douwel¹,

Maas²,

Veeman³

et al. 1990

Macromolecules

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Blends of poly (methyl methacrylate) (PMMA) with poly(vinylidene fluoride) (PVF2) are studied by fluorine-enhanced 13C solid-state nuclear magnetic resonance, while spinning at the magic angle (19F-13C CPMAS NMR). Data were acquired under simultaneous proton and fluorine dipolar decoupling. From these experiments it can be concluded that PMMA/PVF2 blends with weight ratios 80/20, 60/40, 40/60, and 20/80 are mixed at the molecular level. The average distance between PMMA C=0 and OCHa carbons and PVF2 fluorines in all blends is found to be between 2.6 and 3.1 Á.

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Investigation of miscibility by spectroscopic methods IV. How far is poly(vinyl chloride) miscible with s‐poly(methyl methacrylate) and poly(styrene‐co‐acrylonitrile)? An answer from nonradiative energy transfer

Cited by 19 publications

References 24 publications

Synthesis of high rubber styrene–EPDM–acrylonitrile graft copolymer and its toughening effect on SAN

Synthesis of high rubber styrene–EPDM–acrylonitrile graft copolymer and its toughening effect on SAN

Correlating miscibility of PVC/PMMA blend with polymer chain orientation

Miscibility in PMMA/poly(vinylidene fluoride) blends, studied by fluorine-19-enhanced carbon 13 CPMAS NMR

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