Phase separation in polymer blend thin films studied by differential AC chip calorimetry

Gotzen, Nicolaas-Alexander; Huth, Heiko; Schick, Christoph; Assche, Guy Van; Neus, Carine; Mele, Bruno Van

doi:10.1016/j.polymer.2009.10.062

Cited by 27 publications

(13 citation statements)

References 37 publications

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“…The isothermal temperature was set in 5 K increments from 290 to 400 K, due to which T Φ had an uncertainty within ±2.5 K. The detailed methodology can be found in Refs. and .…”

Section: Resultsmentioning

confidence: 97%

“…Therefore, method to study the nucleation process has to be sensitive enough to track compositional fluctuation in the early stage and in small spatial scale. As proposed by Gotzen et al, DSC method is a more sensitive technique in this time scale. By the virtue of small time and spatial resolution that UFDSC offers, we in this work find that after of short plateau, increasing number and size of nuclei starts at 10 s, causing gradual decreasing of measured T g .…”

Section: Resultsmentioning

confidence: 99%

“…In this work, we utilize UFDSC to investigate the phase separation behavior of polymer blends through a temperature‐jump method inspired by the Gotzen et al Owing to the high heating and cooling rates of UFDSC, the temperature can be changed from 170K to the phase separation temperature in a few milliseconds, resulting in rather precise control over the progress of phase separation. Poly(vinyl methyl ether)/polystyrene (PVME/PS), which shows a lower critical solution temperature (LCST) behavior is chosen as the model blend system.…”

Section: Introductionmentioning

confidence: 99%

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Phase separation dynamics of a poly(vinyl methyl ether)/polystyrene (PVME/PS) blend studied by ultrafast differential scanning calorimetry

Luo

Lai

Jiang

et al. 2017

J Polym Sci B Polym Phys

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In this work, ultrafast differential scanning calorimetry (UFDSC) is used to study the dynamics of phase separation. Taking poly(vinyl methyl ether)/polystyrene (PVME/PS) blend as the example, we firstly obtained the phase diagram that has lower critical solution temperature (LCST), together with the glass transition temperature (Tg) of the homogeneous blend with different composition. Then, the dynamics of the phase separation of the PVME/PS blend with a mass ratio of 7:3 was studied in the time range from milliseconds to hours, by the virtue of small time and spatial resolution that UFDSC offers. The time dependence of the glass transition temperature (Tg) of PVME‐rich phase, shows a distinct change when the annealing temperature (Ta) changes from below to above 385 K. This corresponds to the transition from the nucleation and growth (NG) mechanism to the spinodal decomposition (SD) mechanism, as was verified by morphological and rheometric investigations. For the SD mechanism, the temperature‐dependent composition evolution in PVME‐rich domain was found to follow the Williams–Landel–Ferry (WLF) laws. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 1357–1364

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“…The isothermal temperature was set in 5 K increments from 290 to 400 K, due to which T Φ had an uncertainty within ±2.5 K. The detailed methodology can be found in Refs. and .…”

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phase separation dynamics of a poly(vinyl methyl ether)/polystyrene (PVME/PS) blend studied by ultrafast differential scanning calorimetry

Luo

Lai

Jiang

et al. 2017

J Polym Sci B Polym Phys

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“…This technique, called quasi‐isothermal measurement, is known well as a technique of TM‐DSC . Recently an AC‐chip calorimeter was developed and applied to polymers . This new technique was combined with in situ XRD experiment with metals .…”

Section: Combination Of Calorimetry and Xrdmentioning

confidence: 99%

Recent progress in thermal analysis of polymers: experimental techniques and a new aspect of temperature in measurement of material properties

Saruyama

Tatsumi

Yao

2016

Polymer International

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Thermal analysis has been utilized in polymer research for a long time and its usefulness is widely recognized. High-performance commercial instruments have driven significant progress in the thermal studies of polymers. On the other hand, new experimental instruments have been developed in laboratories as well. In this paper attention is paid to the latter category. The laboratory-made instrument focused on the target material and/or phenomena provides data that are not available from other techniques. Experiments using the temperature modulation technique, which has been successfully utilized in laboratory-made instruments, are introduced in this paper. The temperature modulation technique reveals a new aspect of temperature useful for studies of material properties.

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“…Polymer blend (ultra)thin films play an important role in many applications, including coating techniques, adhesives, microelectronics, and surface patterning . Their performance in these applications depends crucially on the structure in films, which is primarily determined by phase separation, dewetting and the interplay between them.…”

Section: Introductionmentioning

confidence: 99%

Selective solvent annealing induced phase separation and dewetting in PMMA/SAN blend ultrathin films

Zhang

Zhu

Shi

et al. 2014

J. Polym. Sci. Part B: Polym. Phys.

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Phase behaviors induced by solvent annealing in poly(methyl methacrylate) (PMMA) and poly(styrene-ran-acrylonitrile) (SAN) blend ultrathin films have been investigated by atomic force microscopy and grazing incidence small-angle Xray scattering. Our results indicate that both the phase separation within the blend and the dewetting of the film induced by composition fluctuation take place upon the selective solvent annealing, producing complex structures containing upper droplets (of one phase) and mimic-films (of the other richphase). The use of acetic acid (the selective solvent for PMMA) generates PMMA mimic-film and SAN droplets, while the introduction of DMF (exhibiting better solubility for SAN) vapor results in the formation of SAN mimic-film and PMMA droplets. Essentially, the interaction at polymer/substrate interface, resultant wettability of selected component, solubility of PMMA and SAN in adopted solvent dominate not only the phase separation and the dewetting of the whole film but also the synergism of them.

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Phase separation in polymer blend thin films studied by differential AC chip calorimetry

Cited by 27 publications

References 37 publications

Phase separation dynamics of a poly(vinyl methyl ether)/polystyrene (PVME/PS) blend studied by ultrafast differential scanning calorimetry

Phase separation dynamics of a poly(vinyl methyl ether)/polystyrene (PVME/PS) blend studied by ultrafast differential scanning calorimetry

Recent progress in thermal analysis of polymers: experimental techniques and a new aspect of temperature in measurement of material properties

Selective solvent annealing induced phase separation and dewetting in PMMA/SAN blend ultrathin films

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