Polyamide 6-clay nanocomposites/polypropylene-grafted-maleic anhydride alloys

Liu, Xiaohui; Wu, Qiuju; Berglund, Lars A.; Fan, Jiaqi; Zhang, Qi

doi:10.1016/s0032-3861(01)00307-x

Cited by 103 publications

(75 citation statements)

References 24 publications

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“…The improved interfacial adhesion resulting from the formation of a PP-g-PA6 copolymer is believed to be responsible for the slight increase in toughness. The improvement in impact strength by the addition of PP-g-MA was also reported by Liu et al [33] for PA6/clay nanocomposites.…”

Section: Mechanical Propertiessupporting

confidence: 79%

Enhancement of properties of PA6/PP nanocomposites via organic modification and compatibilization

Kusmono¹,

Ishak²,

Chow³

et al. 2008

Express Polym. Lett.

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Abstract. Nanocomposites based on polyamide 6/polypropylene (PA6/PP = 70/30) blend containing organophilic montmorillonite (OMMT) and maleated polypropylene (PP-g-MA) as compatibilizer were prepared by melt compounding followed by injection molding. Modification of montmorillonite (MMT) with dodecyalmine was successfully performed. The morphological and mechanical properties of nanocomposites were investigated by using x-ray diffraction (XRD), transmission electron microscopy (TEM), tensile, flexural, and impact tests. The thermal stability of nanocomposites was characterized by using thermogravimetric analysis (TGA) and heat distortion temperature (HDT). XRD and TEM results indicated that the intercalated structure was obtained for PA6/PP/MMT composite, a mixture of intercalated and exfoliated structures for PA6/PP/OMMT nanocomposite, and exfoliated structure for PP-g-MA compatibilized PA6/PP/OMMT nancomposite. Thermal stability and HDT of PA6/PP matrix were improved by the addition of both MMT and OMMT. The introduction of PP-g-MA into the PA6/PP/OMMT nanocomposite enhanced the properties such as stiffness, strength, ductility, impact strength, and HDT. This was attributed to the compatibilizing effect of PP-g-MA which improved interfacial adhesion between OMMT with PA6/PP matrix and also promoted the degree of exfoliation of silicate layers in the PA6/PP matrix.

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Section: Mechanical Propertiessupporting

confidence: 79%

Enhancement of properties of PA6/PP nanocomposites via organic modification and compatibilization

Kusmono¹,

Ishak²,

Chow³

et al. 2008

Express Polym. Lett.

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“…Cho & Paul [5] have reported that the organoclay was well exfoliated into nylon 6 matrix when compounded with twin screw extruder. Liu et al [6] have reported the preparation of polyamide 6-clay nanocomposites/MAHgPP alloys and investigated its mechanical and dynamic mechanical properties and morphologies. The notched impact strength of the alloys increased remarkably while its stiffness and strength still maintained.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, morphological and rheological properties of polyamide 6/organo-montmorillonite nanocomposites

Chow¹,

Ishak²

2007

Express Polym. Lett.

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Abstract. Polyamide (PA6) nanocomposites containing 4 wt% organo-montmorillonite (OMMT) were melt-compounded followed by injection molding. The mechanical properties of the PA6/OMMT nanocomposites were studied through tensile and flexural tests. The rheological behaviour of the nanocomposites was determined by plate/plate rheological measurements. Attempts were made to trace the rheological parameters that reliably reflect the observed changes in the clay dispersion. X-ray diffraction (XRD) and atomic force microscopy (AFM) were used to characterize the exfoliation and dispersion of the OMMT in the PA6 matrix. The thermal properties of PA6/OMMT nanocomposite were characterized by Dynamic Mechanical Thermal Analysis (DMTA). The tensile modulus and strength of the PA6 was increased in the presence of OMMT. The flexural strength of PA6/OMMT was approximately doubled compared to the tensile strength value. The significant enhancement of both tensile and flexural strength was attributed to the delaminated clay formation. XRD and AFM results revealed the formation of PA6 nanocomposites as the OMMT was successfully exfoliated.

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“…They found that the notched impact strength, the stiffness and the strength of the alloys were higher than those in N6. They also found that the PP-g-MA showed a more homogeneous morphology and dispersion than the MA-free counterparts [22]. Additionally, Tand et al have studied the N6/Polyphenylene Sulfide (N6/PPS) blend using SEBS-g-MA as the coupling agent.…”

Section: Studies On Mechanical Properties Of the Nylon Compositesmentioning

confidence: 99%

Ag-Nylon Nanocomposites by Dynamic Emulsion Polycondensation

2016

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The present work demonstrates a novel technique for dispersing nanofillers in a thermoplastic polymer, where polymerization and dispersion of the nanofillers occur simultaneously via dynamic emulsion polycondensation at ambient temperature. The composite is manufactured in the form of a uniform powder, which can then be molded into desired shape by melting or sintering. The technique is demonstrated for Ag nanowire / Nylon 66 composites. In this demonstration, Ag nanowires are synthesized by the polyol process. Polyvinylprrolidone (PVP) is used to functionalize the Ag nanowires. Nanocomposites with varying Ag content are prepared and investigated. The nanowires are found to be monodispersed and hydrogen-bonded to the Nylon 66 matrix through PVP. Glass transition temperature of the composites decreases from 61 to 48 °C with Ag weight fraction increasing from 0 to 6.47%. The depression of the glass transition temperature is owed to the plasticizer effect as well as heterogeneous nucleation effect of the nanowires for polymerization leading to shorter chain length.

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Polyamide 6-clay nanocomposites/polypropylene-grafted-maleic anhydride alloys

Cited by 103 publications

References 24 publications

Enhancement of properties of PA6/PP nanocomposites via organic modification and compatibilization

Enhancement of properties of PA6/PP nanocomposites via organic modification and compatibilization

Mechanical, morphological and rheological properties of polyamide 6/organo-montmorillonite nanocomposites

Ag-Nylon Nanocomposites by Dynamic Emulsion Polycondensation

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