Water-assisted extrusion as a novel processing route to prepare polypropylene/halloysite nanotube nanocomposites: Structure and properties

Lecouvet, Benoît; Sclavons, Michel; Bourbigot, Serge; Devaux, Jacques; Bailly, Christian

doi:10.1016/j.polymer.2011.07.021

Cited by 112 publications

(95 citation statements)

References 47 publications

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“…Ball mill homogenization and intercalated treatments can be used for well dispersion in epoxy matrices 27,28 . A waterassisted extrusion with a PP-graft-maleic anhydride (PP-g-MA) compatibilizer is developed for good dispersion of HNTs in HNTs-PP nanocomposites 29 . By surface grating PBA, HNTs' dispersion and in the PVC matrix was enhanced 30 .…”

Section: Hnts For Mechanical Reinforcementmentioning

confidence: 99%

Escalating Applications of Halloysite Nanotubes

Saif

Asif

2015

J. Chil. Chem. Soc.

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In nanotechnology different nano materials are used like carbon nanotubes, nanofluids, nanoparticles, nanoemulsions, nanocapsules, etc. Due to their toxic effects the results of these nano materials are not considered safe for humans and for the environment as well. Halloysite nanotubules (HNTs) having low cost are naturally occurring environmental friendly nanotubules. These are distinctive and handy materials formed by face weathering of aluminosilicate minerals having definite ratio of aluminum, silicon, hydrogen, and oxygen. HNTs have high mechanical strength and modulus. Due to these properties it is ideal for various applications; remediation of ecological contaminants, these are acting as a career for the delivery of drugs and various macro molecules, storage of H 2 gas, for catalytic conversions and for the processing of hydrocarbons. These are also used in anticancer therapy, sustained delivery for certain agents, as a template or nanoreactor for biocatalyst, in personal care, cosmetics and as environment caring. They are also used in the fabrication of high quality white-ware ceramics, nanotemplates and nano scale reaction bottles. Due to easy dispersability in polymer matrix, abundant availability and biocompatibility, HNTs are also used in different epoxy (EP) composites. In this review, we have tried to recap the different aspects of halloysites nanotubes for their use in different research fields.

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Section: Hnts For Mechanical Reinforcementmentioning

confidence: 99%

Escalating Applications of Halloysite Nanotubes

Saif

Asif

2015

J. Chil. Chem. Soc.

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“…This leads to improved bond stress, which results in the highest tensile stress. At higher loading (e.g., above TPU-7wt.% HNT), the tensile stress decrease may be attributed to the agglomeration of the HNT nanotubes, which resulted in poor interaction between the matrix and the HNT surface [31]. Figure 7.…”

Section: Testing Equipmentmentioning

confidence: 99%

Morphology and tensile properties of thermoplastic polyurethane-halloysite nanotube nanocomposites

Gaaz

Sulong²,

Akhtar

et al. 2015

Int. J. Automot. Mech. Eng.

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The high aspect ratio of nanoscale reinforcements enhances the tensile properties of a pure polymer matrix. Researchers have reported the morphology and tensile properties of thermoplastic polyurethane and halloysite nanotube (TPU-HNTs) nanocomposites, formed through compression moulding processes. Few researchers have reported on TPU-HNTs formed through injection moulding. Therefore, the present work investigates the tensile properties of TPU and HNT nanocomposites via injection moulding. TPU and HNTs were mixed using a brabender mixer with concentrations ranging from 1wt.% to 15wt.% and varying mixing parameters (i.e., mixing speed, mixing time, and mixing temperature). Tensile bars were injection moulded by varying the moulding parameters (i.e., injection temperature, injection time, and injection pressure). A significant increment of tensile strength was found at 1wt.% HNT reinforcement. TPU-HNT nanocomposite with 1wt.% reinforcement exhibited tensile strength of 24.3 MPa, which was higher than that of pure TPU. The Young's modulus of the TPU-15wt.% HNT nanocomposite was 21.5 MPa. Thus, TPU-HNT had improved mechanical properties, compared to pure TPU, due to the addition of a nanofiller.

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“…Novel thermomechanical and chemical properties of HNTs have provided opportunity as low-cost and effective nanofillers for polymer matrix and hence have been incorporated into polymers. [24][25][26][27] Previous studies from our laboratory [28][29][30] and the reports from other researchers [31][32][33] indicate that incorporation of HNTs improves the thermomechanical properties of the nanocomposites. HNTs also provide strength increase without loss of ductility.…”

Section: Introductionmentioning

confidence: 99%

Highly dispersed polyamide‐11/halloysite nanocomposites: Thermal, rheological, optical, dielectric, and mechanical properties

Prashantha¹,

Lacrampe²,

Krawczak³

2013

J of Applied Polymer Sci

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Bio-based polyamide 11 and natural halloysite nanotubes (HNTs) were used for the preparation of PA-11/HNT nanocomposites with varying nanotubes concentrations by melt extrusion using a masterbatch dilution process. The prepared nanocomposites were analyzed for microstructural changes, transparency, thermal stability, rheological behavior, dielectric, and mechanical properties. The HNT nanotubes are well dispersed in PA-11 matrix in the studied composition range as shown by microscopy and spectrophotometry. Interestingly, good halloysite dispersion in PA-11 matrix increases the tensile strength and Young modulus of PA-11 without sacrificing the ductility. Highly dispersed nanotubes also bring favorable changes in the thermal stability, dielectric, and rheological characteristics of PA-11. Additionally, glass transition temperature, crystallization temperature, and degree of crystallinity of the nanocomposites tend to increase with increase in nanotubes loading. Thus, PA-11 can become a tailor-made material with multifunctional characteristics, thanks to the addition of HNTs.

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Water-assisted extrusion as a novel processing route to prepare polypropylene/halloysite nanotube nanocomposites: Structure and properties

Cited by 112 publications

References 47 publications

Escalating Applications of Halloysite Nanotubes

Escalating Applications of Halloysite Nanotubes

Morphology and tensile properties of thermoplastic polyurethane-halloysite nanotube nanocomposites

Highly dispersed polyamide‐11/halloysite nanocomposites: Thermal, rheological, optical, dielectric, and mechanical properties

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