Thermosetting polymer blends of unsaturated polyester resin and poly(ethylene oxide). I. Miscibility and thermal properties

Zheng, Haifeng; Zheng, Sixun; Guo, Qipeng

doi:10.1002/(sici)1099-0518(19971115)35:15<3161::aid-pola9>3.0.co;2-z

Cited by 46 publications

(28 citation statements)

References 4 publications

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“…Miscible polymer blends can be analyzed by plotting the experimental results according to Equation (2). In our case, taking DH 2u = 32.6 cal/g; [19] V 1u = 299.4 cm 3 /mol and V 2u = 105.5 cm 3 /mol, a plot of the left term of this expression against U 2 1 T m leads to a straight line with an intercept of 0.29 and a slope of 449.6 K, as can be seen in Figure 2.…”

Section: Miscibility Behaviormentioning

confidence: 99%

Miscibility and Crystallization of an Amine-Cured Epoxy Resin Modified with Crystalline Poly(ɛ-caprolactone)

Remiro¹,

Cortázar

Calahorra

et al. 2001

Macromol. Chem. Phys.

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Section: Miscibility Behaviormentioning

confidence: 99%

Miscibility and Crystallization of an Amine-Cured Epoxy Resin Modified with Crystalline Poly(ɛ-caprolactone)

Remiro¹,

Cortázar

Calahorra

et al. 2001

Macromol. Chem. Phys.

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“…Miscible or even partially miscible blends of thermoset resins with a linear polymer are usually unexpected 6. However, a number of thermoset blends where one component is a linear homopolymer and another is highly crosslinked have been proven to be miscible or partially miscible by Guo and coworkers6–18 and by other researchers 19–25. It has been shown that miscibility can exist between the components for crosslinked blends with hydrogen‐bonding interactions.…”

Section: Introductionmentioning

confidence: 99%

Phase behavior, crystallization, and nanostructures in thermoset blends of epoxy resin and amphiphilic star‐shaped block copolymers

Guo

Wang

Chen

et al. 2006

J Polym Sci B Polym Phys

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This article reports thermoset blends of bisphenol A‐type epoxy resin (ER) and two amphiphilic four‐arm star‐shaped diblock copolymers based on hydrophilic poly(ethylene oxide) (PEO) and hydrophobic poly(propylene oxide) (PPO). 4,4′‐Methylenedianiline (MDA) was used as a curing agent. The first star‐shaped diblock copolymer with 70 wt % ethylene oxide (EO), denoted as (PPO‐PEO)4, consists of four PPO‐PEO diblock arms with PPO blocks attached on an ethylenediamine core; the second one with 40 wt % EO, denoted as (PEO‐PPO)4, contains four PEO‐PPO diblock arms with PEO blocks attached on an ethylenediamine core. The phase behavior, crystallization, and nanoscale structures were investigated by differential scanning calorimetry, transmission electron microscopy, and small‐angle X‐ray scattering. It was found that the MDA‐cured ER/(PPO‐PEO)4 blends are not macroscopically phase‐separated over the entire blend composition range. There exist, however, two microphases in the ER/(PPO‐PEO)4 blends. The PPO blocks form a separated microphase, whereas the ER and the PEO blocks, which are miscible, form another microphase. The ER/(PPO‐PEO)4 blends show composition‐dependent nanostructures on the order of 10−30 nm. The 80/20 ER/(PPO‐PEO)4 blend displays spherical PPO micelles uniformly dispersed in a continuous ER‐rich matrix. The 60/40 ER/(PPO‐PEO)4 blend displays a combined morphology of worm‐like micelles and spherical micelles with characteristic of a bicontinuous microphase structure. Macroscopic phase separation took place in the MDA‐cured ER/(PEO‐PPO)4 blends. The MDA‐cured ER/(PEO‐PPO)4 blends with (PEO‐PPO)4 content up to 50 wt % exhibit phase‐separated structures on the order of 0.5–1 μm. This can be considered to be due to the different EO content and block sequence of the (PEO‐PPO)4 copolymer. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 975–985, 2006

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“…There is apparent depression of melting temperature with increasing weight fraction of the diblock copolymer, which is because of significant interaction between CO groups of PMMA and CH 2 groups of PVDF. One characteristic of miscible polymer blends is the depression of melting temperature, and this reduction is owing to the hydrogen bonding and dipole–dipole interaction between PMMA and PVDF that can reduce chemical potential in polymer blends . A blend of PVDF with 60 wt% of the block copolymer has changed the depression trend of melting temperature, which can be a result of lower miscibility in this composition.…”

Section: Resultsmentioning

confidence: 99%

Nanophase morphology and crystallization in poly(vinylidene fluoride)/polydimethylsiloxane‐block‐poly(methyl methacrylate) blends

Seraji

Gui

Zhang

et al. 2018

Polymer International

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A polydimethylsiloxane‐block‐poly(methyl methacrylate) (PDMS‐b‐PMMA) diblock copolymer was synthesized by the atom transfer radical polymerization method and blended with a high‐molecular‐weight poly(vinylidene fluoride) (PVDF). In this A‐b‐B/C type of diblock copolymer/homopolymer system, semi‐crystallizable PVDF (C) and PMMA (B) block are miscible due to favorable intermolecular interactions. However, the A block (PDMS) is immiscible with PVDF and therefore generates nanostructured morphology via self‐assembly. Crystallization study reveals that both α and γ crystalline phases of PVDF are present in the blends with up to 30 wt% of PDMS‐b‐PMMA block copolymer. Adding 10 wt% of PVDF to PDMS‐b‐PMMA diblock copolymer leads to worm‐like micelle morphology of PDMS of 10 nm in diameter and tens of nanometers in length. Moreover, morphological results show that PDMS nanostructures are localized in the inter‐fibrillar region of PVDF with the addition of up to 20 wt% of the block copolymer. Increase of PVDF long period by 45% and decrease of degree of crystallization by 34% confirm the localization of PDMS in the PVDF inter‐fibrillar region. © 2018 Society of Chemical Industry

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Thermosetting polymer blends of unsaturated polyester resin and poly(ethylene oxide). I. Miscibility and thermal properties

Cited by 46 publications

References 4 publications

Miscibility and Crystallization of an Amine-Cured Epoxy Resin Modified with Crystalline Poly(ɛ-caprolactone)

Miscibility and Crystallization of an Amine-Cured Epoxy Resin Modified with Crystalline Poly(ɛ-caprolactone)

Phase behavior, crystallization, and nanostructures in thermoset blends of epoxy resin and amphiphilic star‐shaped block copolymers

Nanophase morphology and crystallization in poly(vinylidene fluoride)/polydimethylsiloxane‐block‐poly(methyl methacrylate) blends

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