Refractometric and calorimetric studies of the van der Waals interactions between the molecules of polycarbonate and of the additives acting as plasticizers or antiplasticizers

Makaruk, Leszek; Polanska, Hanna; Staros, Elżbieta

doi:10.1002/app.1976.070200106

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…Adiabatic calorimetry has also been used to measure directly the heat of mixing (156,168). Measurements of this type are quite difficult due to the extremely slow solution kinetics.…”

Section: Calorimetrymentioning

confidence: 99%

Thermodynamics of PVC—plasticizer interaction: A review

Foss

Shaw

1985

J. Vinyl Addit. Technol.

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In this review we evaluate many of the experimental techniques for measurement of polymer solvent interaction thermodynamics, placing special emphasis on the interaction between plasticizers and semicrystalline materials. Methods are reviewed for measurement of heat and volume of mixing, Flory-Higgins interaction parameter (chi), virial coefficients, and empirical compatibility measurements. dn dcKc .

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“…Adiabatic calorimetry has also been used to measure directly the heat of mixing (156,168). Measurements of this type are quite difficult due to the extremely slow solution kinetics.…”

Section: Calorimetrymentioning

confidence: 99%

Thermodynamics of PVC—plasticizer interaction: A review

Foss

Shaw

1985

J. Vinyl Addit. Technol.

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“…A second way would be changing the spenon has sometimes been called antiplasticization effect. [27][28][29] This means that specific interactions cific interactions between PC and PMMA. Studies showed that intermolecular interactions between between the polymers will lead to a T g curve above the simple additivity line while T g curve below it PC and PMMA are localized between the two phenyl rings of PC and the carbonyl groups of can be related to miscible blends with only Van der Waals interactions.…”

Section: Introductionmentioning

confidence: 99%

Blends of bisphenol-A polycarbonate and acrylic polymers: III. Effect of imide concentration on compatibility

Debier

Legras

1997

J. Polym. Sci. B Polym. Phys.

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Imide units copolymerized with MMA units have been selected in order to improve compatibility between PC and acrylics through specific interaction or internal repulsion. Good dispersion of acrylic inside a PC matrix has been observed upon melt mixing, which can be partially explained by the good rheological agreement between these two polymers. Transmission electron microscopy has shown that the system remains phase separated from 5 to 95 wt % of PC. Phase diagrams for three different imide concentrations have been drawn. Results obtained by DSC (conventional and with enthalpy relaxation) are similar to those obtained by optical cloud point detection. The phase diagrams show the raise of the PC/PMMA demixtion curve (LCST type) when percentage of imide increases in the acrylic phase. Theoretical calculations on binary interaction energy density show a slight improvement of the interaction between acrylic and PC when imide percentage increases. Cloud point measurements on 50/50 PC/acrylic blends varying the imide concentration show that the improvement of compatibility deduced from the raise of the demixtion curve (LCST type) is more related to a kinetic effect (the high Tg of imidized samples is reducing macromolecule mobility) than specific interactions. The calculated favorable interactions are probably too weak to be detected with cloud point measurements. The microstructures obtained after crystallization of the PC phase under solvent vapors in phase separated PC/acrylics blends can also be explained by Tg effects. Moreover, solvent vapor exposure could be a powerful tool to determine the real thermodynamic behavior of the blends at room temperature. © 1997 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 35: 749–761, 1997

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The effect of chemical structure of derivatives of 1,1‐bis(4‐hydroxyphenyl)‐2,2‐propane on the antiplasticization of polycarbonate

Makaruk¹,

Polanska²,

Mizerski³

1979

J of Applied Polymer Sci

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SynopsisThe antiplasticizing effect of ester derivatives of bisphenol A: l,l-bis(4-hydroxyphenyl)-2,2-propane diacetate (DAPP), 1,1-bis(4-hydroxy-3,5-dichlorophenyl)-2,2-propane diacetate (DACPP), 1,1-bis(4-hydroxy-3,5-dibromophenyl)-2,2-propane diacetate (DABPP), l,l-bis(4-hydroxy-3,5-dichlorophenyl)-2,2-propane dibenzoate (DBCPP), l,l-bis(4-hydroxy-3,5-dichlorophenyl)-2,2-propane di-2,4-dichlorobenzoate (DCBCPP) on polycarbonate was investigated. Obtained results indicate that antiplasticizing abilities of these compounds depend on the number of polar groups in the molecule, as well as on the possibility of tight filling the free volume by the molecules in polymer-antiplasticizer system.

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Refractometric and calorimetric studies of the van der Waals interactions between the molecules of polycarbonate and of the additives acting as plasticizers or antiplasticizers

Cited by 7 publications

References 5 publications

Thermodynamics of PVC—plasticizer interaction: A review

Thermodynamics of PVC—plasticizer interaction: A review

Blends of bisphenol-A polycarbonate and acrylic polymers: III. Effect of imide concentration on compatibility

The effect of chemical structure of derivatives of 1,1‐bis(4‐hydroxyphenyl)‐2,2‐propane on the antiplasticization of polycarbonate

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