Correlation between interfacial interactions and mechanical properties of PA-6 doped with surface-capped nano-silica

Li, Deliang; Qing, Liu; Yu, Laigui; Li, Xiaohong; Zhang, Zhijun

doi:10.1016/j.apsusc.2009.04.121

Cited by 28 publications

(16 citation statements)

References 34 publications

(34 reference statements)

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“…The silane‐coupling agent would form a protective covering surrounding the surface of the nanoparticle, enabling the amine group to be responsible for the chemical bonding. Thus, considering that the 3‐aminopropyl trimethoxysilane (APTMS) reacts with the TiO 2 nanoparticles, there will be amino groups on the surface of the TiO 2 nanoparticles, which allowed the reaction with the terminal carboxyl groups of PA11, and also form hydrogen bonds with hydroxyl groups in the surface‐capped nano‐TiO 2 . These reasons led to the choice the APTMS as silane‐coupling agent for the PA11/TiO 2 nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and mechanical/tribological properties of polyamide 11/Titanium dioxide nanocomposites

2014

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In this study, the effects of the surface chemical modification of titanium dioxide (TiO 2 ) nanoparticles and their addition into polyamide 11 (PA11) on the mechanical, dynamic-mechanical, and tribological properties of PA11/TiO 2 nanocomposites were investigated. To improve the interfacial adhesion between the nanoparticles and the polymeric matrix, the surface of TiO 2 nanoparticles was modified with 3-aminopropyl trimethoxysilane (ATPMS). Nuclear magnetic resonance (NMR), infrared spectroscopy (IR), and thermogravimetric analysis (TG) were used to evaluate the efficiency of the surface chemical modification of TiO 2 nanoxide. PA11/TiO 2 nanocomposites with 2 and 4 wt% of TiO 2 were prepared in an internal mixer. The interfacial adhesion between the matrix and the TiO 2 was evaluated by dynamic-mechanical analysis (DMA), and the dispersion of nanoparticles was analyzed by scanning electron microscopy (SEM). The NMR spectrum of the modified TiO 2 exhibited peaks in the region between 255 ppm and 270 ppm, indicating disubstituted and trisubstituted chemical structures between alkoxysilano structures and TiO 2 . Nanocomposites with modified TiO 2 exhibited the lowest tan d peak values, which provide evidence that the chemical modification of the TiO 2 facilitated energy dissipation at the interface of TiO 2 with the PA11 matrix. Surface modification of the TiO 2 nanoparticles with ATPMS caused a greater reduction of the mass loss by abrasion when compared with non-

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Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and mechanical/tribological properties of polyamide 11/Titanium dioxide nanocomposites

2014

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“…Polyamide 6 (PA6) has been widely used as a very important engineering plastic because of its advantages, which include a high strength, excellent wear resistance, and good chemical stability. However, PA6 has poor dimensional stability and notch toughness and a high moisture sorption; these restrict its more versatile application in the plastics and fiber industries 1…”

Section: Introductionmentioning

confidence: 99%

Properties and morphology of supertoughened polyamide 6 hybrid composites

Ding

Chen

Song

et al. 2012

J of Applied Polymer Sci

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In this study, supertoughened polyamide (PA) nanocomposites were prepared by the incorporation of epoxidized polyhedral oligomeric silsesquioxane (POSS) into the polyamide 6 (PA6)/methyl methacrylate-butadiene-styrene copolymer (MBS) blend via a melt-blending method. The effect of POSS on the rheological properties, mechanical properties, water uptake, and morphology of the hybrid PA6 nanocomposites was studied. The results show that under impact loading, the hybrid PA6 composites exhibited significant improvements in both the crack initiation energy and the crack propagation energy. This hybrid composite showed supertough behavior. Meanwhile, the tensile strength and the water absorption resistance was also improved with the addition of epoxidized POSS. The capillary and torque rheological results indicated that the epoxidized POSS, which acted as nanoscale ball bearings, significantly decreased the melt viscosity of the matrices and facilitated the melting process. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were performed to study the microstructure-property relationships of the hybrid PA6 composites. The TEM results showed that the MBS particles were dispersed homogeneously in the PA6 matrix. The mean diameter of the MBS particles decreased, and the size distribution of the MBS particles narrowed down with the introduction of the epoxidized POSS and compatiblizer. The SEM micrographs indicated that the impact fracture surfaces of the PA composites showed morphological characteristics of supertough polymers because of the synergistic effect of the functionalized POSS and compatibilized MBS particles.

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“…It is also shown that the interphase strength improves by thin interphase indicating the inverse relation between interphase strength and thickness, while both interphase thickness and strength directly correlates to the extents of interfacial interaction/adhesion between polymer matrix and nanoparticles. 55,56 So, eqn (23) is not appropriate for the interphase strength in CNT nanocomposites.…”

Section: Development Of Equationsmentioning

confidence: 99%

Effects of critical interfacial shear strength between a polymer matrix and carbon nanotubes on the interphase strength and Pukanszky's “B” interphase parameter

Zare

Rhee

2020

RSC Adv.

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Correlation between interfacial interactions and mechanical properties of PA-6 doped with surface-capped nano-silica

Cited by 28 publications

References 34 publications

Preparation, characterization, and mechanical/tribological properties of polyamide 11/Titanium dioxide nanocomposites

Preparation, characterization, and mechanical/tribological properties of polyamide 11/Titanium dioxide nanocomposites

Properties and morphology of supertoughened polyamide 6 hybrid composites

Effects of critical interfacial shear strength between a polymer matrix and carbon nanotubes on the interphase strength and Pukanszky's “B” interphase parameter

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