Co-continuous morphologies in polymer blends: stability

Willemse, R.C.

doi:10.1016/s0032-3861(98)00430-3

Cited by 63 publications

(39 citation statements)

References 5 publications

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“…5e as the temperature reached 270 °C, which was attained by the coalescence of the two phases. The co-continuous structure was once reported by Willemse [19] and Marin et al [6]. Figure 6 shows the DSC thermograms of 0.015 % (wt) SnCl 2 ·2H 2 O-modified PC/PMMA (80/20) blends which were prepared at different temperatures of 230, 240, 250, 260, and 270 °C.…”

Section: Effect Of Mixing Time On Morphologysupporting

confidence: 66%

The Morphological properties of SnCl2·2H2O-modified PC/PMMA blends

et al. 2014

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Section: Effect Of Mixing Time On Morphologysupporting

confidence: 66%

The Morphological properties of SnCl2·2H2O-modified PC/PMMA blends

et al. 2014

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“…2,3 The microstructural morphology plays a key role in imparting unique properties to such blends, and such microstructures have been studied extensively for various blends. 4 -6 Studies of cocontinuous materials have attributed the enhanced mechanical properties to mechanical clamping between the phases with concomitant stress transfer, 7 a feature that also leads to reduced crystallinity. 8,9 In this article we extend the concept of mechanically interlocking structures and introduce the terminology "mechanical grafting."…”

Section: Introductionmentioning

confidence: 99%

Selected physical characteristics of polystyrene/high density polyethylene composites prepared from virgin and recycled materials

Joshi

Lehman

Nosker

2005

J of Applied Polymer Sci

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ABSTRACT:Mixtures of polystyrene and high density polyethylene were injection molded from recycled and virgin polymers to generate cocontinuous structures. The mechanical properties of these blends were evaluated to assess their conformance to rule of mixtures behavior in general and to identify areas of synergy or incompatibility in specific. Flexural and tensile data for recycled blends showed that generally the properties are not additive, except in a cocontinuous region of composition near 35/65 PS/ HDPE that has been identified previously for recycled materials. Analysis of crystallinity in the HDPE phase of these blends by differential scanning calorimetry indicates a marked reduction in the level of HDPE crystallinity at the 35/65 PS/HDPE composition. Similar blends of virgin PS/ HDPE polymer do not show the differing regions of incompatibility and synergy illustrated by the recycled materials, but rather show approximate conformance to the rule of mixtures. Furthermore, the virgin blends show virtually no crystallinity suppression and a more pronounced T g shift in the polystyrene compared to recycled materials. Detailed characterization of the recycled materials in terms of polymer and particulate impurities should improve understanding of these differences and perhaps provide direction for obtaining enhanced synergistic behavior in virgin polymer blends.

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“…Moreover, these empirical equations do not predict a composition window where a co-continuous phase morphology is generated. The formation of a co-continuous phase morphology was long believed to take place at a single composition where phase inversion occurs, in contrast to the fact that A-droplets-in-B-matrix does not [41][42][43][44][45]. The dilemma is: at which set of conditions does phase co-continuity occur over a composition window?…”

Section: Resultsmentioning

confidence: 99%