PP/clay nanocomposites prepared by grafting-melt intercalation

Liu, Xiaohui; Wu, Qiuju

doi:10.1016/s0032-3861(01)00561-4

Cited by 546 publications

(334 citation statements)

References 29 publications

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“…Polypropylene (PP) does not include any polar groups in its backbone that could interact with the BA [26], resulting in a limited dispersion level of the BA in the PP matrix and in poor interfacial adhesion between filler and matrix. This is usually accompanied with limited reinforcing effect.…”

Section: Introductionmentioning

confidence: 99%

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

Pedrazzoli¹,

Khumalo²,

Karger‐Kocsis³

et al. 2014

Polymer Testing

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Effects of nanofiller concentration and surface treatments on the morphology, thermal, viscoelastic and mechanical behaviors of polypropylene copolymer (PP)/boehmite alumina (BA) nanocomposites were investigated. Both untreated and treated BA particles with octylsilane (OS) and with sulphonic acid compound (OS2) were added up to 10 wt% to produce nanocomposites by melt mixing followed by film blow molding and hot pressing. Dispersion of BA was studied by scanning electron microscopy. Differential scanning calorimetry and wide-angle X-ray scattering were adopted to detect changes in the crystalline structure of PP. Thermooxidative degradation of the nanocomposites was assessed by thermogravimetrical analysis. Dynamic mechanical analysis served for studying the viscoelastic, whereas quasi-static tensile, creep and Elmendorf tear tests were used to detect changes in the mechanical performance. BA nanoparticles were finely dispersed in PP up to 10 wt%, even when they were not surface modified. The resistance to thermal degradation was markedly improved by BA nanomodification. Changes observed in the mechanical properties were attributed to BA dispersion, filler/matrix interactions and related effects because the crystalline characteristics of the PP matrix practically did not change with BA modification.

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Section: Introductionmentioning

confidence: 99%

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

Pedrazzoli¹,

Khumalo²,

Karger‐Kocsis³

et al. 2014

Polymer Testing

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show abstract

“…It has been proven in recent years that polymer based nanocomposites reinforced with a small amount of nanosize clay particles (<5 vol.%) significantly improve the mechanical, thermal and barrier properties of the pure polymer matrix [1][2][3][4][5][6][7][8][9][10][11]. Furthermore, these improvements are achieved through conventional processing techniques and without affecting substantially the density of the matrix.…”

Section: Introductionmentioning

confidence: 99%

Processing of clay/epoxy nanocomposites by shear mixing

2003

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“…An increase of T g for PNC with 2 wt% clay was also noted. Liu and Wu [2001] investigated PP-based PNC prepared by melt compounding with clay preintercalated with unsaturated monomer, capable of tethering onto PP backbone. The resulting CPNCs were intercalated.…”

Section: Nanocomposites With a Semicrystalline Matrixmentioning

confidence: 99%