Preparation and characterization of poly(ethylene terephthalate) incorporated with secondary-modified montmorillonite

Gu, Xiao Hua; Zeng, Peng; Zhou, Jia Liang; Xu, Baoyun

doi:10.1007/s13726-014-0220-4

Cited by 7 publications

(6 citation statements)

References 16 publications

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“…However, the content of PE ‐g‐ MAH was too low to improve the interfacial compatibility between HDPE and PA6. Therefore, compared with HDPE/OMMT(100/3)‐PA6, the elongation at break of the HDPE/PE‐ g ‐MAH/OMMT(100/1/3)‐PA6 nanocomposite decreased with the increase of the tensile strength, which is similar to some previous works . When the content of PE ‐g‐ MAH was increased from 1 to 7 phr, as the OMMT nanoparticles migrated to the interfaces and the PA6 layers and their dispersion became more homogeneous, the tensile strength of the nanocomposites continued to increase but the increasing rate became smaller.…”

Section: Resultssupporting

confidence: 86%

Selective localization of organic montmorillonite nanoparticles in multilayered high‐density polyethylene/polyamide 6 composites

Xie

Qin

et al. 2017

Adv Polym Technol

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To achieve a selective localization of nanoparticles in multilayered two-component polymer blends, an intentional two-step process, first pre-compounding and then coextruding, was employed to prepare multilayered high-density polyethylene (HDPE)/ polyethylene-grafted maleic anhydride (PEg-MAH)/organic montmorillonite (OMMT)-polyamide 6 (PA6) nanocomposites. The dispersion of OMMT was evaluated by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results showed that the localization of OMMT was tunable with different content of PE-g-MAH. By comparing the localization of OMMT in a single-layered nanocomposite with that in the multilayered nanocomposites, as well as by theoretically calculating wetting coefficients of the multilayered nanocomposites, the migration mechanism of OMMT was revealed. As demonstrated by differential scanning calorimetry (DSC), transmission rate measurement and tensile test, the selective localization of OMMT in the multilayered nanocomposites could increase crystallinity degree of the two-polymer components, enhancing oxygen barrier property and tensile strength of the nanocomposties. K E Y W O R D Shigh-density polyethylene, migration of nanoparticles, multilayered composites, polyamide 6, selective localization

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Section: Resultssupporting

confidence: 86%

Selective localization of organic montmorillonite nanoparticles in multilayered high‐density polyethylene/polyamide 6 composites

Xie

Qin

et al. 2017

Adv Polym Technol

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“…c, both sc‐OMMT and w‐OMMT shift their diffraction peak to a lower 2 θ region (from 7.6° to 5.6° and 5°), and the corresponding d value is increased from 1.16 nm to 1.58 nm and 1.77 nm, respectively, the increased d ‐spacing can be attributed to the intercalation of ETPC chains inside the MMT galleries. Compared to w‐OMMT, sc‐OMMT shows a reduced intensity and broadened diffraction peak, implying a decrease of coherent layer stacking in the clay , Therefore, scCO 2 seemed to be a more efficient medium to exfoliate clays.…”

Section: Resultsmentioning

confidence: 94%

Enhanced dispersion of nanoclays in poly(ethylene terephthalate)/clay nanocomposites using supercritical carbon dioxide

Xie

Qin

et al. 2016

Vinyl Additive Technology

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Nanoclays were prepared using supercritical carbon dioxide (scCO 2 ) as a medium, and then blended with polyethylene terephthalate (PET) via conventional melt blending processing. The structure and morphology of nanoclays were investigated using wide-angle X-ray diffraction (WAXD) and scanning electron microscopy (SEM). It was found that, compared with the original organically modified layer silicates, smaller nanoclay tactoids and individual platelets morphology could be obtained after they were processed by scCO 2 , indicating scCO 2 processing could enhance exfoliation of nanoclays. WAXD and transmission electron microscopy measurements were used to evaluate the dispersion of nanoclays in the nanocomposites. The results indicated the conventional blending extrusion processing could help to improve the dispersion of nanoclays, and the nanocomposites containing scCO 2 pretreated nanoclays formed a looser clay stack and an improved intercalation structure, compared with those containing as-received nanoclays. Thermal and mechanical properties of the nanocomposites were also studied by differential scanning calorimetry (DSC) and dynamic mechanical analysis, and the results showed that crystallization rate, crystallinity, and storage modulus of the well-dispersed nanocomposites containing scCO 2 pretreated nanoclays were increased, compared with the neat PET and nanocomposites containing asreceived nanoclays or nanoclays prepared by conventional organomodification process in water. J. VINYL ADDIT. TECHNOL., 23:E58-E67, 2017.

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“…The results shows that both tensile strength and tensile modulus of PBT was enhanced significantly by incorporation of clay (up to 2 wt %) in to the polymer matrix. Similarly, Gu et al [25] also reported the improvement of mechanical properties of PET by the addition of modified montmorillonite clay.…”

Section: Mechanical Properties Of Neat Pbt and Clay/pbt Nanocompositesmentioning

confidence: 80%

Characterization of clay filled poly (butylene terephthalate) nanocomposites prepared by solution blending

Saeed

Khan

2015

Polímeros

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SbstractKaolin clay/poly (butylene terephthalate) (clay/PBT) composites films were prepared by solution casting technique. The scanning electron microscope (SEM) study showed that clay particles were well dispersed and embedded within the PBT matrix. The TGA thermograms showed that the thermal stability of PBT matrix was slightly improved by the incorporation of clay into the polymer matrix. The polarized optical microscopy (POM) study presented that the size of spherulites of PBT was decreased by the incorporation of clay into matrix, which might be due to nucleation effect of kaolin clay. The tensile strength and modulii of PBT polymer matrix were also significantly improved by the addition of clay polymer matrix. The solvent uptake study showed that the uptake of various solvents by clay/PBT nanocomposite were lower than neat PBT.

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Preparation and characterization of poly(ethylene terephthalate) incorporated with secondary-modified montmorillonite

Cited by 7 publications

References 16 publications

Selective localization of organic montmorillonite nanoparticles in multilayered high‐density polyethylene/polyamide 6 composites

Selective localization of organic montmorillonite nanoparticles in multilayered high‐density polyethylene/polyamide 6 composites

Enhanced dispersion of nanoclays in poly(ethylene terephthalate)/clay nanocomposites using supercritical carbon dioxide

Characterization of clay filled poly (butylene terephthalate) nanocomposites prepared by solution blending

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