The Distribution of Nanoclay Particles at the Interface and Their Influence on the Microstructure Development and Rheological Properties of Reactively Processed Biodegradable Polylactide/Poly(butylene succinate) Blend Nanocomposites

Salehiyan, Reza; Ray, Suprakas Sinha; Bandyopadhyay, Jayita; Ojijo, Vincent

doi:10.3390/polym9080350

Cited by 43 publications

(19 citation statements)

References 58 publications

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“…They found that hydrophobic montmorillonite Cloisite C20A (Montmorillonite modified with dioctadecyl dimethyl ammonium chloride surfactant) and Cloisite C10A (Montmorillonite modified with benzyldimethylhexadecyl ammonium chloride) located at PP/PS interface and caused PS droplet size reductions while hydrophilic clay particles, Cloisite C30B (Montmorillonite modified with methyl tallow bis-2-hydroxyethylammonium) and Cloisite CNa + (Pristine montmorillonite) were found to accumulate inside the PS droplets and had little influences on the morphology of the PP/PS blends. Similar behaviors were found in PLA/PBS blends [33]. Kelnar et al [34] reported that in PA6/EPR blends, clay modified with lower polarity, that is, Cloisite C15A (Montmorillonite modified with dimethyl, dehydrogenated tallow quaternary ammonium ion) and C20A, showed the most significant compatibilizing effect.…”

Section: Introductionsupporting

confidence: 57%

Effect of Organo‐Modified Montmorillonite on the Morphology and Properties of SEBS/TPU Nanocomposites

Liu

Wang

et al. 2020

Polymer Engineering & Sci

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In this study, novel polystyrene‐b‐poly(ethylene‐butylene)‐b‐polystyrene (SEBS)/thermoplastic polyurethane (TPU)/organo‐modified montmorillonites (OMMT) nanocomposites were prepared by melt mixing. Three different organo‐modified montmorillonites, DK2, DK3, and DK4 (listed in descending order of hydrophilicity) were selected. The compatibilizing and reinforcing effects of OMMT on the structure, morphology, thermal stability, mechanical and rheological properties of the SEBS/TPU blends were studied. It was found that the hydrophilic DK2 nanoparticles were largely located in the continuous TPU phase and partially dispersed at the phase interphase, whereas DK3 and DK4 nanoparticles were preferentially located at the phase interface with an intercalated/exfoliated and intercalated structure, respectively. Scanning electron microscopy (SEM) results showed that SEBS/TPU/OMMT nanocomposites exhibited a more densely organized and interconnected structure compared with SEBS/TPU blends. Better thermal property was achieved after adding DK3, with the tensile properties of the SEBS/TPU increased considerably. Rheological analysis revealed that hydrophilic DK2 nanoparticles were more effective in improving rheology properties and showed a more pronounced nonlinear effect. The prepared SEBS/TPU/OMMT nanocomposites displayed desired thermal, mechanical and rheological properties, which are important for many applications. POLYM. ENG. SCI., 60:850–859, 2020. © 2020 Society of Plastics Engineers

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Section: Introductionsupporting

confidence: 57%

Effect of Organo‐Modified Montmorillonite on the Morphology and Properties of SEBS/TPU Nanocomposites

Liu

Wang

et al. 2020

Polymer Engineering & Sci

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“…In that case, an interfacial layer around the PBS phase could act as a barrier against coalescence and induce rapid size reduction. Recently, the effects of two different organically modified MMTs, namely, C30B and a South African clay named Betsopa (BET), on the morphologies of (60/40) reactively compatibilized PLA/PBS were studied, in the context of their localization behavior …”

Section: Morphology Developmentmentioning

confidence: 99%

“…The viscoelastic behavior of PLA/PBS blends reactively compatibilized with Joncryl (J) has been extensively studied by the present authors, with two different organically modified clays (C30B and BET) being incorporated as interfacial modifiers . Initial investigations on the basis of linear rheological analyses showed that nanocomposites loaded with C30B introduced greater elasticity to the systems.…”

Section: Melt‐state Rheologymentioning

confidence: 99%

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Influence of Nanoclay Localization on Structure–Property Relationships of Polylactide‐Based Biodegradable Blend Nanocomposites

Salehiyan

Ray

2018

Macro Materials & Eng

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This article highlights the recent research achievements regarding the development of nanoclay‐containing biodegradable composites of polylactide (PLA)‐based immiscible blends. The structure–property relationships of particular blends, namely, PLA/poly(ε‐caprolactone), PLA/poly(butylene succinate), and PLA/poly[(butylene succinate)‐adipate], are studied with respect to the nanoclay incorporations. For different nanoclay types and concentrations, the morphologies of these nanocomposites are probed and correlated to their viscoelastic, mechanical, and thermal properties, along with their crystallization behavior and kinetics and gas permeability. The nanoclay dispersion and distribution characteristics are found to be key parameters influencing the final properties. In particular, nanocomposites with a higher degree of nanoclay dispersion exhibit significant enhancement in their mechanical, thermal, and barrier properties, and some agglomerations are effective as regards favorable crystallization behavior. In terms of the clay localization, the positioning of nanoclays at the interface reduces the minor phase size remarkably, because of the droplet encapsulation that counteracts coalescence. However, for improved understanding of the influence of nanoclay localization on the structure–property relationships of these blends, further systematic study is required. That is, nanocomposites with different localizations but the same nanoclay loads should be compared. This can be achieved by tuning the processing protocols and the nanoclay inclusion orders in the blends.

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“…However, blending PP and LDPE is not always expected to result in improvement of the impact strength of PP owing to the immiscibility between PP and LDPE. Recently, a number of studies have shown that incorporating nanofillers and copolymers into polymer blends can improve the compatibility between blended polymers, and one such filler is montmorillonite (MMT) nanoclay. Pure MMT is incompatible with most organophilic polymers and leads to poor dispersion of silicate layers in the composites.…”

Section: Introductionmentioning

confidence: 99%

Structure–property relationship in PP/LDPE blend composites: The role of nanoclay localization

Mofokeng

Ray

Ojijo

2018

J of Applied Polymer Sci

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This article reports, for the first time, on how the kinetics and thermodynamics of the melt‐processing control the nano/micro‐structure development and properties of nanoclay‐filled polypropylene (PP)/low‐density polyethylene (LDPE) blend ternary composites. Morphological characterization suggests that the nano/micro‐structure of the PP/LDPE (80/20) blend can be controlled by incorporating nanoclay alone or by adding a mixture of organoclay and maleated compatibilizers. Simultaneous mixing of PP, LDPE, maleated compatibilizers, and organoclay results in homogeneous distribution of intercalated silicate layers in all the phases of the blend, a feature which profoundly affects the thermal stability and tensile and rheological properties of the blend composites. For example, the elongation‐at‐break for PP increases from 28.1 to 155.6% for composite containing both organoclay and maleated compatibilizers, whereas the thermal stability for PP increases from 269.8 to 303.3 °C for the same composite. However, the impact strength of the PP/LDPE blend decreases with incorporation of organoclay, regardless of the phase in which the nanoclay particles are localized. In summary, the obtained results show that regardless of the phase in which the nanoclay is localized, the morphology, and hence the properties, of the ternary composites are superior to those of the neat blend. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46193.

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The Distribution of Nanoclay Particles at the Interface and Their Influence on the Microstructure Development and Rheological Properties of Reactively Processed Biodegradable Polylactide/Poly(butylene succinate) Blend Nanocomposites

Cited by 43 publications

References 58 publications

Effect of Organo‐Modified Montmorillonite on the Morphology and Properties of SEBS/TPU Nanocomposites

Effect of Organo‐Modified Montmorillonite on the Morphology and Properties of SEBS/TPU Nanocomposites

Influence of Nanoclay Localization on Structure–Property Relationships of Polylactide‐Based Biodegradable Blend Nanocomposites

Structure–property relationship in PP/LDPE blend composites: The role of nanoclay localization

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