Retarded relaxation and breakup of deformed PA6 droplets filled with nanosilica in PS matrix during annealing

Kong, Miqiu; Huang, Yajiang; Chen, Guangling; Yang, Qi; Li, Guangxian

doi:10.1016/j.polymer.2011.08.052

Cited by 47 publications

(39 citation statements)

References 37 publications

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“…As the CNT content increased, the PCL particles gradually coalesced, becoming bigger and less spherical. This behavior can be appreciated by comparing Figures and , but also by observing the difference in Figure (a,b), and has been widely described in the bibliography on ternary NCs when the nanofiller is located in the minor phase . Viscosity effects have often been considered because the presence of nanoparticles gives rise to an increase in the viscosity and melt elasticity of the phase where they are confined, so a less dispersive mixing of the blend can prevent the dispersed particles from fracturing, causing bigger and more elongated dispersed domains .…”

Section: Resultsmentioning

confidence: 92%

Morphology and properties of electrically and rheologically percolated PLA/PCL/CNT nanocomposites

Urquijo¹,

Dagréou

Guerrica-Echevarría³

et al. 2017

J of Applied Polymer Sci

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Poly(lactic acid)/poly(ɛ‐caprolactone)/carbon nanotube (PLA/PCL/CNT) nanocomposites (NCs) were melt‐processed in a conventional industrial‐like twin‐screw extruder maintaining a constant PLA/PCL 80/20 wt. ratio. CNTs located in the thermodynamically favored PCL phase and, as a result, the “sea–island” morphology of the unfilled blend was replaced by a more continuous PCL dispersed phase in the ternary NCs. Rheological and electrical percolation took place at the same CNT contents (over 1.2 wt %) that TEM images suggest continuity of the PCL phase. The electrical and the low‐strain mechanical behaviors upon CNT addition were similar in the reference binary PLA/CNT and ternary PLA/PCL/CNT NCs. In the percolated NCs, the conductivity became 106–107 times higher than in the insulating compositions, while the Young modulus increased linearly upon the addition of CNT (12% increase at 4.9 wt % loading). Moreover, all the PLA/PCL/CNT NCs showed a ductile behavior (elongation at break >130%) similar to that of the unfilled PLA/PCL blend (140%), in contrast to the brittle behavior of binary PLA/CNT NCs. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45265.

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Section: Resultsmentioning

confidence: 92%

Morphology and properties of electrically and rheologically percolated PLA/PCL/CNT nanocomposites

Urquijo¹,

Dagréou

Guerrica-Echevarría³

et al. 2017

J of Applied Polymer Sci

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“…On the other hand, the selective localization in the dispersed phase can make it larger and/or more elongated, which can drive a cocontinuous structure. Those modifications could be caused by both the fact that the nanoparticle localization hinders the breakup of droplets , and that the dispersed‐phase polymer chains are absorbed onto the surface of the nanoparticles . The electrical and mechanical properties can also be altered by the nanoparticle localization.…”

Section: Introductionmentioning

confidence: 99%

Mixing‐sequence controlled selective localization of carbon nanoparticles in PLA/PCL blends

Aguiar

Decol

Pachekoski

et al. 2018

Polymer Engineering & Sci

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This work proposes modifying the adding sequence of components during the production of poly(lactic acid) (PLA) and poly(ε‐caprolactone) (PCL) ternary systems with multiwalled carbon nanotubes (CNT) or graphene nanoplatelets (GN), in order to analyze the nanoparticles’ selective localization in terms of the competition between different factors, such as kinetics, thermodynamics, rheology, and geometry. In the studied system, the PLA's viscosity is higher than the PCL's and the difference in interactions between the CNT or the GN/PLA and the CNT or the GN/PCL is small, meaning the viscosity effects could dominate. However, other factors, such as thermodynamics and geometry, can be observed to compete with the rheological factor, depending on the mixing sequences. Depending on the processing time, a competition between thermodynamics and rheological factors could be observed when the nanoparticles had contact first with the thermodynamically favored phase. The competition between geometrical and rheological factors was observed in the presence of GN in the PLA phase, in the system in which the GN was added first to the PLA phase, which is the phase of lowest affinity. POLYM. ENG. SCI., 59:323–329, 2019. © 2018 Society of Plastics Engineers

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“…Recently extensive research work has been directed towards using nanoparticles as an interfacial agent as well as for reinforcement in polymer blends . Yu et al .…”

Section: Introductionmentioning

confidence: 99%

The role of nanoclay partitioning and fibril formation on dyeability of blend nanocomposite fibres

Bigdeli

Nazockdast

Rashidi

et al. 2013

Coloration Technology

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The aim of the present work was to study the effect of microstructure and microfibril formation on dyeability of polypropylene/poly(butylene terephthalate)/organoclay blend nanocomposite fibres. The blend nanocomposite samples with the same blend ratio but varying in organoclay content were prepared via melt compounding by using a co‐rotating twin screw extruder. The microfibrillar morphology and nanoclay partitioning were studied using scanning electron microscopy and transmission electron microscopy together with rheological results. The presence of nanoclay in the form of tactoids in the polypropylene matrix accelerated the dye sorption but much greater ultimate dye uptake could be achieved for the sample in which the major part of the platelets were preferentially located inside the poly(butylene terephthalate) fibrils. Although increasing the organoclay concentration increased the ultimate dye uptake, it limited the fibril formation at higher organoclay concentration. The utilisation of a compatibiliser was found to have an enhancing effect on ultimate dye uptake. This could be explained in terms of the interfacial role of the compatibiliser in improving microfibril formation as well as partitioning a fraction of nanoclay platelets inside the polypropylene matrix.

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Retarded relaxation and breakup of deformed PA6 droplets filled with nanosilica in PS matrix during annealing

Cited by 47 publications

References 37 publications

Morphology and properties of electrically and rheologically percolated PLA/PCL/CNT nanocomposites

Morphology and properties of electrically and rheologically percolated PLA/PCL/CNT nanocomposites

Mixing‐sequence controlled selective localization of carbon nanoparticles in PLA/PCL blends

The role of nanoclay partitioning and fibril formation on dyeability of blend nanocomposite fibres

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