Preparation and rheology of polyamide-6/attapulgite nanocomposites and studies on their percolated structure

Shen, Liang; Yuan, Li-Yan; Du, Qiangguo; Zhong, Wei; Yang, Yuliang

doi:10.1016/j.polymer.2005.05.040

Cited by 155 publications

(105 citation statements)

References 43 publications

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“…Recently, the same relationship was successfully used to describe the viscoelastic properties of system with micelles dispersed in homopolymers 43,44 and nanocomposites. 36 It can be concluded from Figure 5 that the dynamic viscoelastic response is a combination of the relaxation of macromolecular motions and the entanglements of polymer melts. However, there are some differences between the spectra of neat PLA and PLA/CaCO 3 composites.…”

Section: Relaxation Spectrummentioning

confidence: 98%

Structure‐rheology responses of polylactide/calcium carbonate composites

Gu¹,

Cun-yang²,

Zhou³

et al. 2009

J of Applied Polymer Sci

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Polylactide (PLA) and calcium carbonate (CaCO 3 ) were melt blended using a twin-screw extruder. The morphology of PLA/CaCO 3 composites was observed by scanning electronic microscopy. The linear and nonlinear shear rheological behaviors of PLA/CaCO 3 melts were investigated by an advanced rheology expended system. The results show that the CaCO 3 particles are evenly dispersed in the PLA matrix. The incorporation of low CaCO 3 content (<20%) causes the reduction of the storage moduli, loss moduli, and dynamic viscosities whereas high CaCO 3 content (>30%) leads to the increase of the storage moduli, loss moduli, and dynamic viscosities. The composites with high CaCO 3 content show pseudo-solidlike behaviors at low frequency. High CaCO 3 content also results in a significant increase of flow activation energy and a dramatic decrease of flow index n, which is in consistent with the more serious shear-thinning tendency of high-filled PLA composites melts. The particular rheological responses might be attributed to the formation and destruction of the percolating network.

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Section: Relaxation Spectrummentioning

confidence: 98%

Structure‐rheology responses of polylactide/calcium carbonate composites

Gu¹,

Cun-yang²,

Zhou³

et al. 2009

J of Applied Polymer Sci

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“…5 Because of the unique morphology and structure, ATT has been used for various commercial applications, such as adsorbents, catalysts, rheological agents, and fillers. [5][6][7][8][9] Despite the relatively low cost and availability of such nanosilicates, ATT did not draw much attention in polymer research until organic-inorganic nanocomposites based on layered silicates were first introduced by the Toyota Research Center (combining nylon and montmorillonite). [10][11][12] Since then, small amounts of ATT have been used to improve the mechanical properties and thermal stability of polymeric matrices through the exploitation of the large specific surface area and unusual rodlike morphology of this type of nanoclay.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of organically modified attapulgite/polyurethane nanocomposites

Wang

Auad

Marcovich

et al. 2008

J of Applied Polymer Sci

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Polyurethane (PU) nanocomposites filled with attapulgite (ATT) nanorods were synthesized and characterized with thermal analysis, dynamic mechanical analysis (DMA), and mechanical testing. The formulations were based on 4,4 0 -methylene bis(phenyl isocyanate) (MDI), polytetrahydrofuran, 1,4-butanediol, and inorganic ATT premodified with MDI. The original and premodified ATT (ATT-OH and ATT-MDI) nanorods were characterized with thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy. The analysis revealed that 17 wt % MDI was grafted/adsorbed onto the surface of ATT as a result of the modification.Pristine PU and ATT-MDI/PU nanocomposites were characterized with scanning electron microscopy, differential scanning calorimetry, and TGA. The mechanical tests and DMA showed an increase in the storage modulus and Young's modulus with increasing ATT-MDI content. The crystallinity of the hard and soft segments and thermal stability showed enhancements over those of the neat resin.

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“…With anionic polymers, the hydrogen bonding between the solid surfaces and hydroxyl groups on the polymer resulted in the adsorption and flocculation. Shen et al [25] pre-modified attapulgite with CTAB; the Fourier-transform infrared (FTIR) spectroscopy results reflected the success of this organic modification.…”

Section: Figure 2 Effect Of Chemical Additives On the Apparent Viscomentioning

confidence: 99%

Preparation and Rheological Properties of Attapulgite Gel for Aqueous Suspensions

Zhang¹,

Li²,

Liu³

et al. 2017

Proceedings of the 2016 7th International Conference on Education, Management, Computer and Medicine (EMCM 2016)

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Preparation and rheology of polyamide-6/attapulgite nanocomposites and studies on their percolated structure

Cited by 155 publications

References 43 publications

Structure‐rheology responses of polylactide/calcium carbonate composites

Structure‐rheology responses of polylactide/calcium carbonate composites

Synthesis and characterization of organically modified attapulgite/polyurethane nanocomposites

Preparation and Rheological Properties of Attapulgite Gel for Aqueous Suspensions

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