The β-nucleated ternary composites of polypropylene/nano-CaCO3/short poly(ethylene-terephthalate) fiber

Lin, Zhidan; Chen, Chao; Guan, Zixian; Li, Ming‐Qing; Guo, Guangheng; Xian, Jiaming; Li, Wei

doi:10.1007/s10973-013-2956-z

Cited by 11 publications

(7 citation statements)

References 34 publications

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“…Zhang et al and Wan et al reported a β nucleating role of CaCO 3 nanoparticles that could be promoted by using different surface modifiers based on polyethylene nonyphenol or aluminate and stearic acid coupling agents. Lin et al showed that PET fibers could have a synergistic effect on the β nucleating role of CaCO 3 nanoparticles in a PP/CaCO 3 /PET ternary system. In contrary, negative or inert effects of CaCO 3 on β‐phase crystal content of iPP have been reported by other authors .…”

Section: Introductionmentioning

confidence: 99%

Morphology and properties of highly filled iPP/TiO₂ nanocomposites

Zohrevand

Ajji

Mighri

2013

Polymer Engineering & Sci

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Nanocomposites based on isotactic polypropylene (iPP) and titanium dioxide (TiO 2 ) nanoparticle containing 1-15 vol% (4.6-45.5 wt%) of the nanoparticle were prepared by the melt blending process. The effect of an anhydride-modified polypropylene as a compatibilizer on dispersion of TiO 2 nanoparticles was assessed using SEM. TGA and DSC analysis were performed to study the thermal properties of the nanocomposites. Crystalline structures of iPP in the presence of TiO 2 were analyzed by XRD. Mechanical properties of the nanoparticles were measured and a micromechanical analysis was applied to quantify interface interaction between the polymer and particle. SEM results revealed improvement of TiO 2 particle dispersion by adding the compatibilizer. It was shown that the thermal stability and crystalline structure of the nanocomposite are significantly affected by the state of particle dispersion. TiO 2 nanoparticles were shown to be strong b-nucleating agents for iPP, especially at concentrations less than 5 vol%. Presence of the b-structure crystals reduced the elastic modulus and yield strength of the nanocomposites. Micromechanical analysis showed enhanced interaction between organic and inorganic phases of the compatibilized nanocomposites. POLYM. ENG. SCI., 54:874-886, 2014.

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Section: Introductionmentioning

confidence: 99%

Morphology and properties of highly filled iPP/TiO₂ nanocomposites

Zohrevand

Ajji

Mighri

2013

Polymer Engineering & Sci

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“…3 Meanwhile, filling micro- or nano-inorganic particles into the PP slice and then preparing the modified PP fiber through melt spinning process can change the original molecular chain arrangement of the PP and induce the generation of the β-PP crystal form. 4 -6 The strength, tenacity, thermal stability, antiaging, and other properties of the modified PP fibers have been further improved compared with the untreated PP fibers. 7 At present, the micro- or nano-CaCO 3 particles are often used as a filler to modify PP in actual production for its lower cost.…”

Section: Introductionmentioning

confidence: 99%

Aging behavior of nano-CaCO₃-modified polypropylene nonwoven fabric composites

Wang

Fang

et al. 2020

Polymers and Polymer Composites

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Nano-CaCO3-modified polypropylene (PP) nonwoven fabric composite is widely used as the filter material which could overcome the poor lightfastness and low weight of the pure one, while its aging performances would be influenced. In this article, the aging behavior of the nano-CaCO3-modified PP nonwoven fabric composite was investigated. At first, the difference between untreated and CaCO3-modified PP nonwoven fabric was analyzed by scanning electron microscopy, thermogravimetric/differential thermal analysis, and X-ray diffraction. Then the aging behaviors of these two PP nonwoven fabrics were studied in detail. The results showed that the PP nonwoven fabric exhibited good acid corrosion resistance. On the contrary, acid corrosion resistance of the modified PP nonwoven fabric was poor; although its weight and strength didn’t change under weak acid condition, its weight and strength loss both increased obviously under medium and strong acid condition with the prolongation of corrosion time. Due to the ultraviolet (UV) energy dissipation of nano-CaCO3 particles, the UV aging resistance of the modified PP nonwoven fabric was improved, and the compound UV aging under weak acid condition was also superior to that of the untreated PP fabric. This article will provide experimental and theoretical base for the structural regulation of CaCO3-modified PP fibers.

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“…Mai and co‐workers prepared high‐performance β ‐iPP by adding nano‐CaCO 3 , which was loaded with β ‐nucleating agent, into iPP. They found that the crystallization rate and the content of β ‐crystals increased sharply with addition of nano‐CaCO 3 particles, and the toughness and stiffness of β ‐iPP improved significantly due to the synergistic effect of β ‐crystals and nano‐CaCO 3 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of deformation and pore formation in isotactic polypropylene containing active nano-CaCO₃

Ding

et al. 2017

Polym. Int

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In order to improve the -lamellae distribution and properties of -isotactic polypropylene ( -iPP) membranes, amounts of 5 and 10% active nano-CaCO 3 were added into -iPP. Differential scanning calorimetry, X-ray diffraction and scanning electron microscopy results show that nano-CaCO 3 does not reduce the content of -crystals, but the thickness, lamellae thickness distribution and stability of -lamellae decrease apparently. Tensile testing was conducted at 25 and 90 ∘ C. The results manifest that the second yield point, which has a strong negative correlation with lamellae thickness distribution, is delayed monotonically with addition of nano-CaCO 3 when stretched at 25 ∘ C, indicating that nano-CaCO 3 could narrow effectively the lamellae thickness distribution of -iPP. Furthermore, when stretched at 90 ∘ C, the subdued yield peak, retarded necking-down phenomenon and enhanced strain-hardening modulus demonstrate that the deformation stability improves gradually with introduction of nano-CaCO 3 , which is completely opposite to the trend for -lamellae stability. Through further detailed characterization of morphological evolutions during stretching, we found that interfacial debonding between nano-CaCO 3 and -iPP is triggered and abundant microviods can be formed, which can retard the rotation and slip of -lamellae and make the -transformation slow down in the initial stage of stretching, consequently leading to better isotropic deformation. Moreover, nano-CaCO 3 could efficiently restrain the formation of coarse fibrils, leading to more uniform pore size distribution within the biaxial stretching microporous membrane. However, excessive nano-CaCO 3 (10%) would cause aggregation within the -iPP cast film and finally result in larger pores and poor pore distribution in the membrane.

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The β-nucleated ternary composites of polypropylene/nano-CaCO3/short poly(ethylene-terephthalate) fiber

Cited by 11 publications

References 34 publications

Morphology and properties of highly filled iPP/TiO₂ nanocomposites

Morphology and properties of highly filled iPP/TiO₂ nanocomposites

Aging behavior of nano-CaCO₃-modified polypropylene nonwoven fabric composites

Investigation of deformation and pore formation in isotactic polypropylene containing active nano-CaCO₃

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The β-nucleated ternary composites of polypropylene/nano-CaCO3/short poly(ethylene-terephthalate) fiber

Cited by 11 publications

References 34 publications

Morphology and properties of highly filled iPP/TiO2 nanocomposites

Morphology and properties of highly filled iPP/TiO2 nanocomposites

Aging behavior of nano-CaCO3-modified polypropylene nonwoven fabric composites

Investigation of deformation and pore formation in isotactic polypropylene containing active nano-CaCO3

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Morphology and properties of highly filled iPP/TiO₂ nanocomposites

Morphology and properties of highly filled iPP/TiO₂ nanocomposites

Aging behavior of nano-CaCO₃-modified polypropylene nonwoven fabric composites

Investigation of deformation and pore formation in isotactic polypropylene containing active nano-CaCO₃