Partial and Complete Wetting in Ultralow Interfacial Tension Multiphase Blends with Polylactide

Zolali, Ali M.; Favis, Basil D.

doi:10.1021/acs.jpcb.6b08800

Cited by 17 publications

(17 citation statements)

References 62 publications

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“…In recent years, the control of the morphology of ternary polymer blends for improving the toughness has remained a research focus . There are two types of wetting structures in ternary polymer blends: completely wetting and partially wetting, as shown in Figure . Complete wetting behavior can result in core–shell structures.…”

Section: Introductionmentioning

confidence: 99%

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Fabricating a partial wetting structure for improving the toughness of intumescent flame‐retardant HDPE

Zhao

Gao

et al. 2019

J of Applied Polymer Sci

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Elastomer always exhibited poor efficiency for toughening flame-retardant polymer. In intumescent flameretardant HDPE, a novel multi-steps processing method was employed by Chang Lu and colleagues, to fabricate a partial wetting structure in which LLDPE-g-MAH phase with the sphere was dispersed at the interface. The partial wetting structure caused a remarkable improvement of the toughness of flameretardant HDPE with 2 wt% LLDPE-g-MAH. Its elongation at break and notched impact strength were 43% and 270% higher, respectively, than that of neat HDPE. The unique interface failure mode should be responsible for the high impact strength.ARTICLES 48474 Polybutylene terephthalate modified with dimer acid methyl ester derived from fatty acid methyl esters and its use as a hot-melt adhesive

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Section: Introductionmentioning

confidence: 99%

“…In most partial wetting structure literature, the size of the phase at the interface has been larger than 2 μm . These phenomena indicate that the phase at the interface exhibits partial compatibility with the matrix, causing the partial wetting morphology to be unsuitable for toughening.…”

Section: Introductionmentioning

confidence: 99%

Fabricating a partial wetting structure for improving the toughness of intumescent flame‐retardant HDPE

Zhao

Gao

et al. 2019

J of Applied Polymer Sci

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“…More recently, a focus was given to partial wetting morphologies, where droplets of one polymer are located at the interface of the two other polymers (Fig. (a)), compared to a complete wetting of the interface by the third phase (Fig.…”

Section: Introductionmentioning

confidence: 99%

Study of the partial wetting morphology in polylactide/poly[(butylene adipate)‐co‐terephthalate]/polyamide ternary blends: case of composite droplets

Fodorean

Navard

et al. 2018

Polymer International

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The prediction of the morphology of ternary polymer blends requires a good knowledge of the values of the three interfacial tensions. We selected three polymers, either biobased or biodegradable, polyamide (PA), poly[(butylene adipate)-co-terephthalate] (PBAT) and polylactide (PLA), and we accurately measured their interfacial tensions using the retraction method, varying the molar mass or inverting the phases. The following values of interfacial tension were obtained: PBAT/PLA = 3.3 ± 0.7 mN m −1 , PA/PLA = 5.6 ± 0.3 mN m −1 and PBAT/PA = 3.0 ± 0.4 mN m −1 . These values were used to calculate the spreading coefficients giving rise to two negative coefficients and one coefficient close to zero. Ternary blends with various compositions, two different levels of viscosity for PBAT and different processing conditions were prepared. There was a very good agreement between the predictions of the spreading theory, when using the values of interfacial tension of the right order of magnitude, and the observed morphologies, whatever the polymer serving as a matrix. When PLA or PBAT was chosen as the matrix, the ternary blend morphology was composed of composite droplets, presenting a partial wetting morphology, dispersed in the polymer matrix. This morphology was observed whatever the composition, the viscosity of the PBAT phase and the processing conditions. A further calculation of the free energy confirmed this morphology. The formation process of this semi-encapsulated morphology was observed during blending.

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“…Two main types of morphology can be obtained in multiphase polymer blends with three components (e.g., immiscible ternary blends with two major components and one minor phase), which are complete wetting and partial wetting. In the latter, the minor component is present as droplets self‐assembled at the interface of the other two major components 34–39 . The mechanism behind the produced morphology is the result of the spreading coefficients which express the interfacial tension and interfacial force equilibrium between different blend components 12,40–42 .…”

Section: Introductionmentioning

confidence: 99%

“…In the latter, the minor component is present as droplets self-assembled at the interface of the other two major components. [34][35][36][37][38][39] The mechanism behind the produced morphology is the result of the spreading coefficients which express the interfacial tension and interfacial force equilibrium between different blend components. 12,[40][41][42] The partial wetting of ternary polymer mixtures has not been extensively studied and remains a new frontier.…”

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Nucleation modalities in poly(lactide), poly(butylene succinate), and poly(ε‐caprolactone) ternary blends with partial wetting morphology

Fenni

Wang

Haddaoui

et al. 2020

Polymer Crystallization

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Ternary biodegradable polymer blends of poly(lactic acid) (PLA), poly(butylene succinate) (PBS), and poly(ε-caprolactone) (PCL) with the composition 45/10/45 wt% and exhibiting partial-wetting morphology were prepared. In this morphology, the minor phase is present as self-assembled droplets at the co-continuous interface of the other two major phases. The crystallization of the components in the various blends was thoroughly investigated. Differential scanning calorimetry highlighted minor differences in the overall kinetics of a given component in the ternary blend, with respect to the neat polymer. On the other hand, several unusual nucleation mechanisms could be studied by polarized optical microscopy (PLOM). With reference to the major phases, PLA spherulites displayed surface-induced nucleation from the interface with molten PBS or PCL droplets. On lowering the crystallization temperature, the PBS phase effectively nucleated at the interface with previously crystallized PLA domains, forming a transcrystalline morphology. Concerning the minor phase, weak partial-wetting PBS droplets displayed a droplet-to-droplet percolation of the nucleation events. Strongly partial-wetting PCL droplets were confined between previously crystallized PLA and PBS co-continuous phases and, instead, solidified as isolated domains randomly in space. This work provides further insights in the relationship between morphology and crystallization in immiscible ternary blends.

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Partial and Complete Wetting in Ultralow Interfacial Tension Multiphase Blends with Polylactide

Cited by 17 publications

References 62 publications

Fabricating a partial wetting structure for improving the toughness of intumescent flame‐retardant HDPE

Fabricating a partial wetting structure for improving the toughness of intumescent flame‐retardant HDPE

Study of the partial wetting morphology in polylactide/poly[(butylene adipate)‐co‐terephthalate]/polyamide ternary blends: case of composite droplets

Nucleation modalities in poly(lactide), poly(butylene succinate), and poly(ε‐caprolactone) ternary blends with partial wetting morphology

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