Der Einfluß von Kristallviolett auf die Strukturbildung von Poly(vinylidenfluorid)

Schmolke, R.; Elling, Benjamin R.; Künstler, W.; Danz, R.; Geiß, D.

doi:10.1002/actp.1988.010390403

Cited by 11 publications

(2 citation statements)

References 15 publications

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“…[13] does not contradict the conclusions drawn in ref. [13] does not contradict the conclusions drawn in ref.…”

Section: Polymorphism and Polymorphic Transitions In P V D Fsupporting

confidence: 80%

“…Another interpretation of this fact [13] is based on the assumption that when microscopic crystallites of the polar /?-form are generated, polarizing charges appear on their surface and prevent the formation and growth of the pstructure for energetic reasons. From this viewpoint, it becomes clear that the introduction of a polar additive stimulates the formation of the 8-form.…”

Section: Polymorphism and Polymorphic Transitions In P V D Fmentioning

confidence: 99%

See 1 more Smart Citation

Thermokinetic analysis of polymorphous transformations in the crystallization and orientation of flexible‐chain polymers

Elyashevich

Poddubny²,

Bezprozvannykh³

1990

Acta Polymerica

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Acta Polymericr 41 (1990) Nr. 3 1 47 aM. Figure 2 shows also the discrepancy between curves of NOE(w,B) a t aM = 54 (approximate solution) and corresponding t o a = 45 for precise solution. The value of parameter a M is one of the values which have been obtained in ref. [4] on the base of eqs. (13), (17) and experimental data for aromatic/aliphatic polyester in CDCl,.The crystallization of flexible-chain polymers capable of forming different polymorphous modifications was considered by using the thermodynamic approach and taking into account kinetic factors. Taking as examples poly(caproamide) and poly(viny1idene fluoride), the changes in free energies in the generation of different crystalline forms were calculated and phase diagrams were plotted in the coordinates degree of coiling of macromolecules and temperature. It was thus possible to establish the thermokinetic conditions for the formation of equilibrium and metastable modifications and the transitions between them. Thermokinetische Analyse der polyrnorphen Tramformationen bei der Kristallisation und Orienfierung von flexibelkettigen PolymerenDie Kristallisation von flexibelkettigen Polymeren, die unterschiedliche polymorphe Modifikationen bilden konnen, wurde unter thermodynamischen Aspekten und unter Berucksichtigung kinetischer Faktoren betrachtet. An den Beispielen Poly(caproamid) und Poly(vinylidenf1uorid) wurden die Anderungen der freien Energie bei der Bildung unterschiedlicher kristalliner Modifikationen berechnet, und Phasendiagramme in den Koordinaten Knauelungsgrad der Makromolekule und Temperatur wurden dargestellt. Auf diese Weise war es moglich, die thermokinetischen Bedingungen fur die Bildung der Gleichgewichts-und der metastabilen Modifikationen sowie fur die Uhergange zwischen ihncn anzugeben. TepfiommemuuecicuC. urbaaua noauopg(inazx npeepau{efiuG npu r;pucmannuaayuu u opuerbmayuu 2 u 6~o q e n~b u noamepocHa OCHOBe TepMOAHHaMHYeCKOI'O IIOAXOAa C YYeTOM KHHeTHYeCKHX @aKTOpOB IIpOBeAeHO PaCCMOTpeHHe IIpOIleCCa K P R C T~J I J I H~~~H H r m b~o q e n~b~x nOJIBMepOB, CIIOCO6HbiX K 06Pa30BaHHIO pa3JlHYHblX IIOJIHMOp@HMX MOAH@HKaqHn. Ha IIpHMepe IIOJlIIKaIIpOaMHAa R IIOJlHBHHHnHgeH@TOpUAa PaCCYIITaHM H3MeHeHIIR CBO6OAHbIX BHeprHi IIpB o6pa-30BaHBH Pa3JlHYHbIX KPHCTaJl.JlBYeCKBX @OPM H IIOCTpOeHM @a30BbIe AHaI'paMMbI B KOOpAHHaTaX: CTeIIeHb CBepHy-TOCTR MaKpOMOJleKyJl -TeMIIepaTypa, n03BOnMBIIJHe YCTaHOBHTb TepMOKHHeTHYeCKBe YCJlOBHR BO3HHKHOBeHHR paBHOBeCHbIX €3 leTaCTa6HJIbHbIX MOAH@RKal@ R IIepeXOAbI MeXgy HBMII.

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“…[13] does not contradict the conclusions drawn in ref. [13] does not contradict the conclusions drawn in ref.…”

Section: Polymorphism and Polymorphic Transitions In P V D Fsupporting

confidence: 80%

Section: Polymorphism and Polymorphic Transitions In P V D Fmentioning

confidence: 99%