Structure–property relationships in polyamide 12/halloysite nanotube nanocomposites

Lecouvet, Benoît; Gutiérrez, Juan Gilavert; Sclavons, Michel; Bailly, Christian

doi:10.1016/j.polymdegradstab.2010.11.006

Cited by 139 publications

(98 citation statements)

References 47 publications

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“…HNTs have recently gained considerable attention as a new type of nano-additive for enhancing the mechanical [13][14][15], thermal, crystallization [16,17], and fire performance of thermoplastic polymers, such as polypropylene and polyamide-6 [18], and thermosets, such as epoxy [19]. In recent years, the assembly of ordered metal nanoparticleson one-dimensional nanotubes to synthesize nanocomposites has attracted a great deal of attention in the field of electroanalytical chemistry; particularly in electrochemical sensors [20].…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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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“…A further difference between the layered silicatelike montmorillonite (MMT) and halloysite is the significantly lower cation exchange capacity (CEC) of HNT for modification via ionic exchange. However, in halloysite, nanocomposites with highly polar polymer contents [9][10][11][12], such as PVC [9,10], PA [11,12], or epoxy [13], require no modification/ treatment of the halloysite for the preparation of melt-mixed polymer nanocomposites with well distributed HNT. With non-polar polyolefins such as PP, due to the highly hydrophobic nature of PP, it is necessary to modify not only the halloysite [14][15][16][17], but also the polymer matrix to increase the polarity of PP [18][19][20][21].…”

mentioning

confidence: 99%

The effect of halloysite modification combined with in situ matrix modifications on the structure and properties of polypropylene/halloysite nanocomposites

Khünová¹,

Kristóf²,

Kelnar³

et al. 2013

Express Polym. Lett.

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The effect of various modifications/intercalations of halloysite and the combination of these modifications with in situ PP matrix modification was investigated with respect to the structure and properties of the polypropylene/halloysite nanocomposites. Hexadecyl-tri-methyl-ammonium-bromide (HEDA), 3-aminopropyltrimethoxysilane and urea were used as the intercalators/modifiers. The best intercalation was found for urea, although an unexpected insignificant impact on the mechanical properties also resulted as a consequence of the urea polarity and the significant decrease in PP crystallinity. However, the simultaneous application of 4,4!-diphenylmethylene dimaleinimide (DBMI) brought about an increase in the mechanical behavior by increasing the halloysite/PP affinity as a result of in situ matrix modification. This effect was further supported by coupling between the PP and halloysite (HNT) in the system containing urea-intercalated HNT. This can be explained by the occurrence of a urea-supported reaction between the imide ring of DBMI and the OH groups of the HNT, which resulted in the best mechanical behaviors achieved in this study

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“…Lecouvet and J.G. Gutierrez [2] reveal an improved dispersion and an alignment of the nanotubes in nanocomposites made by TSMC. Also, improvement in the storage modulus and the linear viscoelastic property.…”

Section: Dispersion Of Hnt's-mentioning

confidence: 95%

“…HNTs can used in polymeric nanocomposites to improve the mechanical strength, thermal stability, crystalline behavior etc. of the polymers [1][2]. In determining the final performance of polymer nanocomposites the interfacial interactions and the degree of dispersion of fillers in polymer matrix are key issues [10].…”

Section: Introductionmentioning

confidence: 99%

Current Research Trends in Modification / Interaction of Halloysite Nanotube Filled Polymer Blends and Its Composites: A Review

2015

IJSR

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These Halloysite is a naturally occurring aluminosilicate material (Al2Si2O5(OH)4.2H2O) with hollow tubular structure which is obtained from mines as natural deposits. Halloysite shows unique surface chemical property because of its multi-layer structure with a few hydroxyl groups present on the surface of the nanotubes. Due to the weak secondary interactions between the nanotubes by hydrogen bonds and van derWaal's forces halloysite can be easily dispersed in a non-polar polymer matrix such as polupropylene as compared to any other layer silicates. Today we know the HNT's filled polymer blends and its composites is because of various researches carried out over many years. Researchers have toiled hard to improve the thermomechanical performance and physical properties with various experiments. A looking down with hatred of different approaches, every new research shares the same objectives of getting superior thermomechanical performance and physical properties at very lower filler loadings compared to conventional polymer composites. This paper reviews the vast array of research work carried out within past decades for the modifications/intercalations of HNTs to improve the dispersion and physical properties of the nanocomposites. This study is mainly focused on the aspects related to improve the mechanical, thermal and physical properties of the nanocomposite. It reports the research trends in modification/interaction of HNTs filled polymer blends and its composites.

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Structure–property relationships in polyamide 12/halloysite nanotube nanocomposites

Cited by 139 publications

References 47 publications

Morphology and tensile properties of thermoplastic polyurethane-halloysite nanotube nanocomposites

Morphology and tensile properties of thermoplastic polyurethane-halloysite nanotube nanocomposites

The effect of halloysite modification combined with in situ matrix modifications on the structure and properties of polypropylene/halloysite nanocomposites

Current Research Trends in Modification / Interaction of Halloysite Nanotube Filled Polymer Blends and Its Composites: A Review

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