Morphology evolution of immiscible polymer blends as directed by nanoparticle self-agglomeration

Cai, Xiaoxia; Li, Bingpeng; Pan, Yi; Wu, Guozhang

doi:10.1016/j.polymer.2011.11.032

Cited by 74 publications

(57 citation statements)

References 39 publications

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“…This result is opposite to that usually seen in polymer blends filled with other nanofillers, such as silicon dioxide (SiO 2 ), clay and multi-walled carbon nanotubes (MWCNTs), where the size of dispersed-phase domains decreases significantly with adding small amounts of nanofillers [43][44][45]. Recently, Cai et al [46] confirmed that morphology evolution of immiscible polymer blends is strongly dominated by the self-agglomerating pattern of nanoparticles in polymer melts. An increase in the size of PA6 domains is observed as high loading of nano-TiO 2 (e.g.…”

Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 92%

Selective localization of titanium dioxide nanoparticles at the interface and its effect on the impact toughness of poly(L-lactide)/poly(ether)urethane blends

Xiu¹,

Bai²,

Huang³

et al. 2013

Express Polym. Lett.

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Inorganic nanofillers are often added into polymer/elastomer blends as a third component to modify their performance. This work aims to clarify the role of interface-localized spherical nanoparticles in determining the impact toughness of polymer blends. The selective distribution of titanium dioxide (TiO2) nanoparticles in poly(L-lactide)/poly(ether) urethane (PLLA/PU) blends was investigated by using scanning electron microscope. It is interesting to find that, regardless of the method of TiO2 introduction, nano-TiO2 particles are always selectively localized at the phase interface between PLLA and PU, leading to a significant improvement in notched Izod impact toughness. The moderately weakened interfacial adhesion induced by the interfacially-localized nano-TiO2 particles is believed to be the main reason for the largely enhanced impact toughness

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Section: Differential Scanning Calorimetry (Dsc)mentioning

confidence: 92%

Selective localization of titanium dioxide nanoparticles at the interface and its effect on the impact toughness of poly(L-lactide)/poly(ether)urethane blends

Xiu¹,

Bai²,

Huang³

et al. 2013

Express Polym. Lett.

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“…The heterogeneous distribution of nanoparticles has been reported to minimize and stabilize the polymer domain size, and in many cases, it broadens the composition range for co-continuity of the polymer blends. This property of nanoparticle/ polymer mixtures attracts great interest because it not only provides a low-cost method for enhancing the function of these nanocomposites but also allows for the modification of their morphologies to optimize their mechanical properties [52]. The addition of nanoparticles to a polymer system with an existing phase-separated morphology, such as a polymer blend, represents an innovative approach to controlling the microstructure and, therefore, the macroscopic properties of the material [53].…”

mentioning

confidence: 99%

Polyamide blend-based nanocomposites: A review

Chow¹,

Ishak

2015

Express Polym. Lett.

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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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Morphology evolution of immiscible polymer blends as directed by nanoparticle self-agglomeration

Cited by 74 publications

References 39 publications

Selective localization of titanium dioxide nanoparticles at the interface and its effect on the impact toughness of poly(L-lactide)/poly(ether)urethane blends

Selective localization of titanium dioxide nanoparticles at the interface and its effect on the impact toughness of poly(L-lactide)/poly(ether)urethane blends

Polyamide blend-based nanocomposites: A review

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

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