Qualitative assessment of nanofiller dispersion in poly(ε-caprolactone) nanocomposites by mechanical testing, dynamic rheometry and advanced thermal analysis

Miltner, Hans; Watzeels, Nick; Block, Christophe; Gotzen, Nicolaas-Alexander; Assche, Guy Van; Borghs, Koen; Durme, Kurt Van; Mele, Bruno Van; Bogdanov, B.; Rahier, Hubert

doi:10.1016/j.eurpolymj.2010.01.002

Cited by 32 publications

(24 citation statements)

References 52 publications

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“…The melt intercalation method is frequently used for the preparation of nanoclay/based nanocomposites and was first successfully applied by Vaia et al4 Melt mixing by e.g., twin‐screw extrusion, as traditionally used in industrial compounding, is the preferred method for processing thermoplastic/based composites. Previous studies in our group and in literature have shown that in nanocomposites prepared by melt processing, the level of exfoliation, or dispersion of clay particles, depends on the interaction between the polymer and the organoclay 2, 5, 8–12. However, the processing conditions influence the dispersion quality of the nano‐sized particles throughout the polymer matrix, as such affecting the obtained morphology of the nanocomposite samples and, coincidently, the material properties 12–20…”

Section: Introductionmentioning

confidence: 94%

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Optimization of Extrusion Parameters for Preparing PCL‐Layered Silicate Nanocomposites Supported by Modeling of Twin‐Screw Extrusion

Watzeels

Durme

Miltner

et al. 2012

Macro Materials & Eng

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PCL‐based nanoclay (layered silicate) nanocomposites are prepared using a small scale intermeshing co‐rotating twin‐screw extruder. Improving the level of nanoclay dispersion in PCL nanocomposites is obtained by changing the extrusion parameters. Increasing the screw speed and decreasing the throughput leads to an improved dispersion quality, as observed from the improved mechanical properties of the nanocomposites as well as from their clearly affected rheological and crystallization behavior. Furthermore, a commercially available software that simulates the twin‐screw extrusion process (LUDOVIC) is used to asses the processing parameters applied for making the nanocomposites.

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Section: Introductionmentioning

confidence: 94%

“…To assess the dispersion quality of the nanoclay in the PCL nanocomposites using different processing conditions, wide angle X‐ray diffraction (WAXD) is used as well as less conventional methods like rheometry, mechanical analysis, and quasi‐isothermal crystallization experiments 9, 10, 23…”

Section: Introductionmentioning

confidence: 99%

Optimization of Extrusion Parameters for Preparing PCL‐Layered Silicate Nanocomposites Supported by Modeling of Twin‐Screw Extrusion

Watzeels

Durme

Miltner

et al. 2012

Macro Materials & Eng

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“…Studies have used the increase in crystallization rate as a measure of dispersion quality, [240][241][242] which would be expected to work well at low nanotube contents since the qualitative shape of an increase followed by a plateau is similar to that found for the T g versus nanotube content. An important difference, as representatively shown in Figure 9, is that the plateau in crystallization kinetic data is usually better described as a slowly increasing nearly linear section, unlike T g where the plateau is more frequently constant.…”

Section: Semicrystalline Polymersmentioning

confidence: 99%

Effects of carbon nanotubes on polymer physics

Grady

2012

J Polym Sci B Polym Phys

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A single carbon nanotube has many similarities with an individual polymer chain including the fact that the end-to-end length of both are often about the same and the diameter of the chain is about the same (for single-walled nanotubes) or only $10 to 20 times larger (for multiwalled nanotubes). The combination of the solid surface and the similarity of the two materials means that polymer physics are altered in manners not seen with any other type of commonly used filler. The purpose of this review is to update a chapter that appears in a recent tome by Grady (2011) and describe how polymer physics is altered in composites that contain carbon nanotubes. Subjects that will be discussed include chain configuration, glass transition, polymer diffusion, unit cells and crystalline superstructure (lamellae, spherulites and shishkebabs), and crystallization kinetics. V C 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 2012

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“…Some studies were performed to better quantify the clay nanoplatelets dispersion degree within PCL/clay nanocomposites [47,[49][50][51]. Miltner et al [50] demonstrated that three techniques are able to provide a direct and truly quantitative assessment of the nanofiller dispersion state.…”

Section: Layered Silicate Clay Dispersionmentioning

confidence: 99%

“…Miltner et al [50] demonstrated that three techniques are able to provide a direct and truly quantitative assessment of the nanofiller dispersion state. These methods allow paying attention to their sensitivity to the different length scales and physico-chemical aspects of the nanocomposite morphology.…”

Section: Layered Silicate Clay Dispersionmentioning

confidence: 99%

PCL/Clay Nano-Biocomposites

Benali

Dubois

2012

Environmental Silicate Nano-Biocomposites

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Poly(e-caprolactone) is a biopolyester synthesized from fossil resources with interesting biodegradable properties. However, for certain applications, this biopolymer cannot be fully competitive with conventional thermoplastics since some of its properties appear too weak. The association of PCL with nano-sized fillers allows for significantly improving a large range of properties. The most reported nano-fillers in poly(e-caprolactone)-based materials are represented by organo-modified clays more likely leading to one of the most widely investigated families of nano-biocomposites. This chapter is dedicated to this novel class of materials with a special focus set on the relationships between the production process, the extent of nano-filler dispersion and the thermo-mechanical properties, e.g., crystallinity and stiffness, of the related nano-biocomposites.

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Qualitative assessment of nanofiller dispersion in poly(ε-caprolactone) nanocomposites by mechanical testing, dynamic rheometry and advanced thermal analysis

Cited by 32 publications

References 52 publications

Optimization of Extrusion Parameters for Preparing PCL‐Layered Silicate Nanocomposites Supported by Modeling of Twin‐Screw Extrusion

Optimization of Extrusion Parameters for Preparing PCL‐Layered Silicate Nanocomposites Supported by Modeling of Twin‐Screw Extrusion

Effects of carbon nanotubes on polymer physics

PCL/Clay Nano-Biocomposites

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