Morphology and phase behavior of blends of a styrenic block copolymer ionomer and polycaprolactone

Lu, Xinya; Weiß, Robert

doi:10.1021/ma00066a021

Cited by 26 publications

(31 citation statements)

References 9 publications

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“…Eisenberg and Rinaudo [1] proposed that OPEN ACCESS the bulk properties of ionomers are governed by ionic interactions taking place in discrete regions of the material. In the recent decades, ionomers have been extensively investigated to examine their unique characteristic ionic aggregation as responsible for significant changes in physical properties such as glass-transition temperature, mechanical behavior, transport of gases, and melt viscosity [2][3][4][5][6]. According to the Eisenberg-Hird-Moore model, at increasing ionic concentrations, the aggregates (multiplets) start to overlap to form the so-called clusters [7,8].…”

Section: Introductionmentioning

confidence: 99%

Poly(butylene succinate) Ionomers with Enhanced Hydrodegradability

et al. 2015

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A series of poly(butylene succinate) (PBS) ionomers containing up to 14 mol% of sulfonated succinate units have been synthesized by polycondensation in the melt-phase. The copolyesters were obtained with weight average molecular weights oscillating between 33,000 and 72,000 g·mol−1. All copolyesters were semicrystalline with melting temperatures and enthalpies decreasing and glass transition temperatures increasing with the content of ionic units. The thermal stability of PBS was slightly reduced by the incorporation of these units, and it was also found that the copolyesters were stiffer but also more brittle than PBS. The hydrolytic degradability of PBS was enhanced by copolymerization, an effect that was much more pronounced in basic media.

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Section: Introductionmentioning

confidence: 99%

Poly(butylene succinate) Ionomers with Enhanced Hydrodegradability

et al. 2015

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“…7,8 Composition of the blends is shown in Table Although blends of ionomers with other poly-I. Blends were prepared in a two-roll mixing mers have been studied, 9-12 studies on the rubmill at room temperature at a nip gap of 2 mm. bery ionomers have received little attention.…”

Section: Methodsmentioning

confidence: 99%

Ionic elastomer blends of zinc salts of maleated EPDM rubber and carboxylated nitrile rubber

Dutta¹,

De²,

De³

1998

J. Appl. Polym. Sci.

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Blends of zinc salts of maleic anhydride-grafted EPDM rubber and carboxylated nitrile rubber behave as ionic elastomers. Measurement of physical properties suggest that the blend is compatible. It is proposed that the compatibility arises presumably due to formation of interfacial ionic aggregates. Dynamic mechanical and infrared spectroscopic studies reveal that the ionic aggregates can be solvated by ammonia.

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Only a few studies have considered mixtures where the homopolymer is different from either the block segments of the block copolymer, but is miscible with one of the component blocks. [20][21][22][23][24][25] In an attempt to investigate the effect of the addition of a semicrystalline homopolymer on the phase-separated morphology of a block copolymer in the mixtures, the present study prepares a series of binary mixtures of an fully-amorphous, symmetric triblock copolymer of poly(methyl methacrylate)-b-poly(pentafluorostyrene)-b-poly(methyl methacrylate) (denoted as PMMA-PPFS-PMMA) and a semicrystalline homopolymer of poly(vinylidene fluoride) (PVDF). The PVDF molecules have an exothermic interaction with the PMMA blocks through intermolecular hydrogen bonding.…”

Section: Introductionmentioning

confidence: 99%

Morphology and crystallization in mixtures of poly(methyl methacrylate)-poly(pentafluorostyrene)-poly(methyl methacrylate) triblock copolymer and poly(vinylidene fluoride)

et al. 2009

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The microdomain structures and crystallization behavior of the binary blends of poly(methyl methacrylate)-b-poly(pentafluorostyrene)-b-poly(methyl methacrylate) (PMMA-PPFS-PMMA) triblock copolymer with a low molecular weight poly(vinylidene fluoride) (PVDF) were investigated by small-angle X-ray scattering (SAXS), small-angle light scattering (SALS), transmission electron microscopy (TEM), optical microscopy, and differential scanning calorimetry (DSC). A symmetric, PMMA-PPFS-PMMA triblock copolymer with a PPFS weight fraction of 33% was blended with PVDF in N,N-dimethylacetamide (DMAc). In the wide range of PVDF concentration between 10.0 and 30.0 wt%, PVDF was completely incorporated within the PMMA microdomains of PMMA-PPFS-PMMA without further phase separation on a micrometer scale. The addition of PVDF altered the phase morphology of PMMA-PPFS-PMMA from well-defined lamellar to disordered. The crystallization of PVDF significantly disturbed the domain structure of PMMA-PPFS-PMMA in the blends, resulting in a poorly-ordered morphology. PVDF displayed unique crystallization behavior as a result of the space constraints imposed by the domain structure of PMMA-PPFS-PMMA. The pre-existing microdomain structures restricted the lamellar orientation and favored a random arrangement of lamellar crystallites.

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Morphology and phase behavior of blends of a styrenic block copolymer ionomer and polycaprolactone

Cited by 26 publications

References 9 publications

Poly(butylene succinate) Ionomers with Enhanced Hydrodegradability

Poly(butylene succinate) Ionomers with Enhanced Hydrodegradability

Ionic elastomer blends of zinc salts of maleated EPDM rubber and carboxylated nitrile rubber

Morphology and crystallization in mixtures of poly(methyl methacrylate)-poly(pentafluorostyrene)-poly(methyl methacrylate) triblock copolymer and poly(vinylidene fluoride)

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