Effect of the thermodynamic affinity of plasticizers for polyvinyl chloride on the heat of its interaction with fillers

Yushkova, S.M.; Tager, A.A.; Bessonov, Yu.S.; Guzeyev, V.V.; Yezhov, V.S.

doi:10.1016/0032-3950(82)90436-1

Cited by 7 publications

(3 citation statements)

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“…These authors developed a method for estimating thermodynamic parameters of mixing of filled composites that is based on the use of the ther modynamic cycle including dissolution of a composite and wetting of the filler surface. This approach was successfully applied in [8,9] to describe the thermody namics of mixing of glassy composites based on PVC; PMMA; and their VC-MMA copolymers filled with chalk, pearlite, aerosol, and a number of other dis persed inorganic and organic materials. Investigations were mostly performed for composites containing small amounts of fillers.…”

Section: Introductionmentioning

confidence: 98%

“…One of the approaches to solv ing this problem includes measurement of increments for basic thermodynamic functions of the system dur ing introduction of the filler into it and formation of corresponding structures linked to the interfacial layer. analysis of composite materials were laid by Tager and Yushkova [8,9]. These authors developed a method for estimating thermodynamic parameters of mixing of filled composites that is based on the use of the ther modynamic cycle including dissolution of a composite and wetting of the filler surface.…”

Section: Introductionmentioning

confidence: 99%

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Influence of interfacial adhesion and the nonequilibrium glassy structure of a polymer on the enthalpy of mixing of polystyrene-based filled composites

et al. 2012

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For composites based on polystyrene, the styrene-butadiene copolymer, and polybutadiene filled with various kinds of zinc oxide powder, the enthalpy of mixing is calculated in the entire range of filler con tents on the basis of calorimetric measurements with the use of the thermochemical cycle. It is shown that, when the polymer is in excess in the composites based on polystyrene and its copolymer, the enthalpy of mix ing is negative, whereas at a high content of the filler, this value is positive. The alternating sign pattern of the concentration dependence of the enthalpy of mixing is interpreted in terms of the superposition of the nega tive contribution of the enthalpy of the interfacial adhesion interaction of a polymer matrix with the filler and the positive contribution due to a gain in the level of nonequilibrium of the glassy matrix near the surface. A thermodynamic model that makes it possible to separate these contributions and to describe the experi mental curves of the enthalpy of mixing for the composites is advanced.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Influence of interfacial adhesion and the nonequilibrium glassy structure of a polymer on the enthalpy of mixing of polystyrene-based filled composites

et al. 2012

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“…However, we failed to evaluate unambiguously the contribution of this factor for all the plasticizers in question. Along with the formation of hydrogen bonds, an additional interaction is possible in the PVC3DOP system: formation of the donor3acceptor bonds between p electrons of the DOP benzene ring and free 3d orbitals of chlorine atoms in the PVC macromolecules [19]. Possibly, the stronger total interaction of PVC with DOP and the steric hindrance to diffusion of DOP in the film due to the presence of the benzene ring and branched hydrocarbon radicals lead to a decrease in the diffusion coefficient of DOP in comparison with DBEA and DBS.…”

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confidence: 99%