The influence of filler modification on its aggregation and dispersion behaviour in silica/PBT composite

Jesionowski, Teofil; Bula, Karol; Janiszewski, J.; Jurga, J.

doi:10.1163/156855403765826883

Cited by 35 publications

(26 citation statements)

References 24 publications

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“…Its valuable physicochemical properties along with high surface are the reasons for its widespread use [22,23]. Silica exhibits also a great potential for surface functionalization in terms of physical and chemical features and therefore gains even more possible applications [24][25][26][27][28][29][30]. On the other hand, large amounts of lignin, as a by-product, are produced during kraft pulping process in paper production industry, causing it to be a low-cost, easily available filler.…”

Section: Introductionmentioning

confidence: 99%

Supermolecular structure and nucleation ability of polylactide-based composites with silica/lignin hybrid fillers

Grząbka-Zasadzińska

Kłapiszewski

Bula

et al. 2016

J Therm Anal Calorim

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In this paper, amorphous silica Syloid 244 and kraft lignin were mechanically coupled. Four hybrid materials containing silica and lignin in ratios 1:1, 2:1, 5:1 and 20:1 were prepared. As reference samples for hybrid fillers pristine silica and lignin were used. Particle size determination and microscopic observations were applied to determine dispersive and morphological properties of hybrid fillers. Fourier transform infrared spectroscopy confirmed the effective preparation of silica/lignin hybrid materials. The parameters of porous structure of examined hybrid filler were determined using the multipoint Brunauer-Emmett-Teller method and Barrett-Joyner-Halenda algorithm. Composite samples of polylactide (PLA) containing 2.5 % (w/w) of hybrid filler were extruded. Optical microscopy, wide-angle X-ray scattering and differential scanning calorimetry were applied to specify the supermolecular structure of functional PLA/hybrid composites and analyze the crystallization parameters as well as the phase transformation in PLA matrix. Silica/lignin hybrid material was found to be a filler capable of an effective crystal nucleation. The nucleating ability of silica/lignin hybrid filler in PLA matrix is related to porous properties of filler and its composition.

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Section: Introductionmentioning

confidence: 99%

Supermolecular structure and nucleation ability of polylactide-based composites with silica/lignin hybrid fillers

Grząbka-Zasadzińska

Kłapiszewski

Bula

et al. 2016

J Therm Anal Calorim

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“…The literature contains very interesting reports indicating the use of both pyrogenic and precipitated silica in the formation of modern polymer composites, e.g., natural rubber [1], polyurethane (PUR) [2], polyethylene (PE) [3], polypropylene (PP) [4], polystyrene (PS) [5], poly(vinyl chloride) (PVC) [6], polyhydroxyethylmethacrylate (pHEMA) [7], poly(methyl acrylate) (PMA) [8], poly(butylene terephthalate) (PBT) [9], acrylonitrile-butadiene elastomer (NBR) [10] or carboxylated acrylonitrile-butadiene elastomer (XNBR) [11], and epoxy resin [12]. Motivation for the use of silicon dioxide as a polymer filler comes primarily from its high thermal stability and the favorable strength properties of the resulting composites.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Novel PVC/Silica–Lignin Composites

et al. 2015

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An advanced SiO 2 -lignin hybrid material was obtained and tested as a novel poly(vinyl chloride) (PVC) filler. The processing of compounds of poly(vinyl chloride) in the form of a dry blend with silica-lignin hybrid material and, separately, with the two components from which that material was prepared, was performed in a Brabender mixing chamber. An analysis was made of processing (mass melt flow rate, MFR), thermal (thermogravimetric analysis, Congo red and Vicat softening temperature test) and tensile properties of the final PVC composites with fillers in a range of concentrations between 2.5 wt % and 10 wt %. Additionally, the effects of filler content on the fusion characteristics of PVC composites were investigated. The homogeneity of dispersion of the silica-lignin hybrid material in the PVC matrix was determined by optical microscopy and SEM. Finally, it should be noted that it is possible to obtain a PVC composite containing up to 10 wt % of silica-lignin filler using a melt processing method. The introduction of hybrid filler into the PVC matrix results in a homogeneous structure of the composites and positive processing and functional properties, especially thermal stability and Vicat softening temperature.

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“…However, the disadvantages such as low impact strength and heat distortion temperature limit the applications of PBT. Many attempts have been made to obtain desirable properties of PBT by blending it with other polymers or fillers [7][8][9][10][11][12][13][14][15][16][17][18][19]. Among these blends, PBT/inorganic nanocomposites have attracted more and more interest, especially PBT/clay nanocomposites have been widely investigated.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of poly(butylene terephthalate)/silica nanocomposites

Yao

Tian

Zhang

et al. 2009

Polymer Engineering & Sci

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In this study, we presented a convenient, in situ polymerization route for the preparation of Poly (butylene terephthalate) (PBT)/silica nanocomposites, in which silica was not premodified. The nanocomposites were synthesized by in situ polymerization of terephthalic acid (TPA), 1,4-butanediol (BD) and silica. The structure of these nanocomposites were investigated by Fourier transform infrared (FTIR) and thermogravimetric analyses (TGA). The results show that PBT chains were successfully grafted onto the surface of silica. Transmission electron microscope (TEM) micrographs revealed that silica were homogeneously dispersed in PBT matrix at a size level of 10-20 nm. The isothermal crystallization kinetics of pure PBT and PBT/silica nanocomposites were investigated by differential scanning calorimeter (DSC) and simulated by Avrami model. The existence of silica could lead to an acceleration of crystallization and enhance the thermal stability of PBT. According to dynamic mechanical analysis (DMA), the storage modulus of PBT/silica nanocomposites were markedly improved compared with pure PBT.

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The influence of filler modification on its aggregation and dispersion behaviour in silica/PBT composite

Cited by 35 publications

References 24 publications

Supermolecular structure and nucleation ability of polylactide-based composites with silica/lignin hybrid fillers

Supermolecular structure and nucleation ability of polylactide-based composites with silica/lignin hybrid fillers

Preparation and Characterization of Novel PVC/Silica–Lignin Composites

Preparation and characterization of poly(butylene terephthalate)/silica nanocomposites

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