Nanoparticle retarded shape relaxation of dispersed droplets in polymer blends: an understanding from the viewpoint of molecular movement

Liu, Xiqiang; Sun, Zhen-Yi; Bao, Rui‐Ying; Yang, Wei; Xie, Bin; Yang, Ming‐Bo

doi:10.1039/c4ra04380d

Cited by 16 publications

(25 citation statements)

References 68 publications

(94 reference statements)

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“…9 Liu et al have studied the effect of nanosilica particles on the shape relaxation of dispersed PS droplets in the PP/PS blend. 17 The shape relaxation process of PS droplets from highly elongated fiber toward spheres has been observed in both filled and unfilled systems using an optical microscope. 17 The selective localization of nanosilica on the dispersed PS droplet retards the relaxation process of the deformed PS droplets particularly when nanosilica particles form the network in the dispersed phase.…”

Section: Introductionmentioning

confidence: 99%

“…17 The shape relaxation process of PS droplets from highly elongated fiber toward spheres has been observed in both filled and unfilled systems using an optical microscope. 17 The selective localization of nanosilica on the dispersed PS droplet retards the relaxation process of the deformed PS droplets particularly when nanosilica particles form the network in the dispersed phase. 17 Pawar and Bose have studied the effect of the shape of nanoparticles in preserving the peculiar morphologies in various binary polymer blends.…”

Section: Introductionmentioning

confidence: 99%

“…17 The selective localization of nanosilica on the dispersed PS droplet retards the relaxation process of the deformed PS droplets particularly when nanosilica particles form the network in the dispersed phase. 17 Pawar and Bose have studied the effect of the shape of nanoparticles in preserving the peculiar morphologies in various binary polymer blends. 18 It has been shown that the presence of nanoparticles in the filled phase slows down the relaxation of the filled phase.…”

Section: Introductionmentioning

confidence: 99%

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Selective Orientation of Needlelike Sepiolite Nanoclay in Polymer Blend for Controlled Properties

et al. 2018

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Sepiolite nanoclay needles have been selectively localized either in the natural rubber (NR) phase or in the carboxylated nitrile rubber (XNBR) phase of the XNBR/NR (50/50) blend prepared by the solution casting method. In a systematic manner, the role of the difference value between the interaction parameter of individual blend components (NR or XNBR)/solvent and the interaction parameter of sepiolite nanoclay/solvent in selectively localizing the sepiolite nanoclay to the NR phase or the XNBR phase of the XNBR/NR (50/50) blend has been explored. A higher percentage of sepiolite nanoclay resides in the dispersed NR phase when the difference value between the interaction parameter of NR/solvent and the interaction parameter of sepiolite nanoclay/solvent is lower than the difference value between the interaction parameter of XNBR/solvent and the interaction parameter of sepiolite nanoclay/solvent. On the other hand, a higher percentage of sepiolite nanoclay resides in the continuous XNBR phase when the difference value between the interaction parameter of XNBR/solvent and the interaction parameter of sepiolite nanoclay/solvent is lower than the difference value between the interaction parameter of NR/solvent and the interaction parameter of sepiolite nanoclay/solvent. It has been shown that by judiciously choosing different solvent combinations to prepare the blend and to disperse nanoclay, it is possible to fine-tune the difference value between the interaction parameter of individual blend components (NR or XNBR)/solvent and the interaction parameter of sepiolite nanoclay/solvent and dictate the selective localization of sepiolite nanoclay to the NR phase or the XNBR phase of XNBR/NR (50/50) blend. This study shows that it is possible to generate a rubber blend with controlled properties by selectively localizing needlelike sepiolite nanoclay in the dispersed phase or the continuous phase of the rubber blend prepared by the solution casting method.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selective Orientation of Needlelike Sepiolite Nanoclay in Polymer Blend for Controlled Properties

et al. 2018

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“…The surface tension of the materials and interfacial tension between materials [42,43] are listed in Tables 1 and 2, respectively.…”

Section: Distribution Of Cb Particlesmentioning

confidence: 99%

Low percolation threshold and balanced electrical and mechanical performances in polypropylene/carbon black composites with a continuous segregated structure

Gong

Peng

Bao

et al. 2016

Composites Part B: Engineering

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“…After annealing at 200 1C for 600 s (Point b), the composite sample underwent phase morphology coarsening due to the minimization of interfacial free energy. [41][42][43][44] After the shear for 60 s (Point c), the domains were significantly deformed and appeared as elongated lamellar structures, indicating that the phase morphology deformed significantly after the application of the large shear. During the View Article Online recovery period the phase morphology changed from a highly elongated lamellar structure to a fine-range co-continuous structure (Point d).…”

Section: Phase Morphology Of Ps/pmma/cb Composites Under Shearmentioning

confidence: 99%

Conductivity and phase morphology of carbon black-filled immiscible polymer blends under creep: an experimental and theoretical study

Pan

Liu

Hao

et al. 2016

Phys. Chem. Chem. Phys.

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a Blends of carbon black (CB)-filled co-continuous immiscible polystyrene/poly(methyl-methacrylate) (PS/PMMA) with a PS/PMMA ratio of 50/50 and CB selectively located in the PS phase have been prepared by melt blending. The simultaneous evolution of conductivity and phase morphology of blend composites was investigated under shear and in the quiescent state at 200 1C. It was found that shear deformation had a significant influence on the conductivity of the unfilled PS/PMMA blend and its composites, which was attributed to the change of phase morphology during shear. After the shear stress of 10 kPa, the conductivity of PS/PMMA blends filled with 2 vol% of CB decreased by about two orders of magnitude and the phase morphology transformed from a fine co-continuous structure into a highly elongated lamellar structure. The deformation of phase morphology and the decrease of conductivity were weakened upon decreasing the shear stress or increasing the CB concentration.During subsequent recovery, pronounced phase structure coarsening was observed in the mixture and the conductivity increased as well. A simple model describing the behavior of conductivity under shear deformation was derived and utilized for the description of the experimental data. For the first time, the Burgers model was used to describe the conductivity, and the viscoelastic and viscoplastic parameters were deduced by fitting the conductivity under shear. The results obtained in this study provide a deeper insight into the evolution of phase structure in the conductive polymer blend composite induced by shear deformation.

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Nanoparticle retarded shape relaxation of dispersed droplets in polymer blends: an understanding from the viewpoint of molecular movement

Abstract: Nanoparticle network in dispersed droplets of polymer blends retards the shape relaxation of droplets by inhibiting molecular movement.

Cited by 16 publications

References 68 publications

Selective Orientation of Needlelike Sepiolite Nanoclay in Polymer Blend for Controlled Properties

Selective Orientation of Needlelike Sepiolite Nanoclay in Polymer Blend for Controlled Properties

Low percolation threshold and balanced electrical and mechanical performances in polypropylene/carbon black composites with a continuous segregated structure

Conductivity and phase morphology of carbon black-filled immiscible polymer blends under creep: an experimental and theoretical study

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