Quantifying effect of inorganic filler geometry on the structural, rheological and viscoelastic properties of polypropylene-based thermoplastic elastomers

Alanalp, Mine Begum; Durmuş, Ali; Aydın, İsmail

doi:10.1007/s10965-019-1711-y

Cited by 18 publications

(9 citation statements)

References 44 publications

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“…The storage modulus value in the rubbery region denotes the ability of macromolecules to resist the intermolecular slippage. The decrease of storage modulus with the introduction of block copolymer are in line with previous papers [15,52]. With the incorporation of GB 5% (vol.)…”

Section: Mechanical Propertiessupporting

confidence: 91%

“…The maximum lowering effect of the degree of crystallinity is generated by rPP composite with SBS and 20% GB (X c 15.6%), which shows the most appropriate melt viscosity with the recycled polypropylene (Table 3). Other authors showed that the degree of crystallinity of polyolefin samples raised by the addition of elastomer (SEBS) [52], glass fibers [53] and talc [21], while the introduction of montmorillonite clay created a decrease in crystallinity [54]. It is possible that the agglomeration of filler in melted samples to contribute to the crystallinity decreasing.…”

Section: Dsc Measurementmentioning

confidence: 99%

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Effect of Styrene-Diene Block Copolymers and Glass Bubbles on the Post-Consumer Recycled Polypropylene Properties

et al. 2020

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The recycled polypropylene (rPP) materials that meet technical requirements such as reducing the dimensions and improving the tensile, elongation, impact strength, thermal stability, as well as melt processing, are required for the manufacturing industry. In this paper, we studied the mechanical and thermal properties of post-consumer rPP by adding both synthesized thermoplastic elastomers, and glass bubbles (GB) by a melt allowing process. Styrene-butadiene (SBS) and styrene-isoprene (SIS) block-copolymers that had a styrene content of 30 wt% were synthesized by anionic sequential polymerization. The obtained post-consumer rPP composites were characterized by optical microscopy, scanning electron microscopy (SEM), mechanical analyses (tensile, density, hardness, VICAT softening temperature (VST), heat deflection temperature (HDT), dynamic mechanical analysis (DMA), IZOD strength) and thermal analyses (differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)). Weight reduction and improvement of the tensile, elongation, impact strength, thermal stability, as well as melt processing of post-consumer recycled polypropylene (rPP) properties compounded with thermoplastic elastomers and glass bubbles, sustain the use of these formulations for engineering applications.

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Section: Mechanical Propertiessupporting

confidence: 91%

Section: Dsc Measurementmentioning

confidence: 99%

Effect of Styrene-Diene Block Copolymers and Glass Bubbles on the Post-Consumer Recycled Polypropylene Properties

et al. 2020

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“…In this work, BN (similar to graphite layered structure) has a much higher surface area. In return, resulting much higher polymer-filler interaction compared to AlN particles [54,55]. At the same time, the particle size, content, and distribution of inorganic fillers will also affect the mechanical properties of the composites [56].…”

Section: Mechanical Propertymentioning

confidence: 99%

Preparation and Properties of Boron Nitride or Aluminum Nitride Reinforced Glass Fiber/Modified Polyphenylene Sulfide Composites

Zhao

Cai

Chen

et al. 2023

Advances in Polymer Technology

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In this work, polyphenylene sulfide (PPS) containing carboxyl group was synthesized and used to prepare PPS-2COOH/LGF/AlN and composites with high-temperature resistance, corrosion resistance, low dielectric constant, and low dielectric loss were prepared with boron nitride/aluminum nitride (BN/AlN) and glass fiber (LGF). The results showed that the introduction of carboxyl groups did not affect the structure and thermal properties of PPS. The composites exhibited good mechanical properties with a tensile strength of 65 MPa~97 MPa and flexural strength of 112 MPa~154 MPa. The TGA results showed that the composites had good thermal stability, and the T5% of PPS-2COOH/LGF/AlN (20) and PPS-2COOH/LGF/BN (20) reached up to 511.6°C and 506.3°C, respectively. They were insoluble in some organic solvents, such as NMP and DMF at room temperature, and they exhibited excellent chemical resistance. The dielectric performance results showed that with the increase of frequency, the dielectric constant and dielectric loss gradually decreased, the dielectric constant of PPS-2COOH/LGF/BN (15) was 3.9, and the dielectric loss of PPS-2COOH/LGF/BN (15) was 0.01. From the above results, it can be concluded that the composite materials PPS-2COOH/LGF/AlN and PPS-2COOH/LGF/BN have potential application prospects in the field of 5G high thermal conductivity materials.

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“…The effect of inorganic fillers on blends of isotactic polypropylene and PP‐based elastomers has been studied through detailed structural and rheological characterizations. [ 25 ] The filler geometry was found to have a significant effect on the viscoelastic properties of the blends by modifying the melt flow characteristics as well as the relaxation kinetics. [ 25 ] As evident from the above discussion, the effect of the elastomer addition on the blend properties is strongly dependent on their composition.…”

Section: Introductionmentioning

confidence: 99%

Customized blends of polypropylene for extrusion based additive manufacturing

Das

Shanmugham

Bortner

2022

Vinyl Additive Technology

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Filament‐based material extrusion (MatEx) additive manufacturing has garnered great interest due to its simplicity, customizability, and cost‐effectiveness. However, MatEx of semicrystalline polymers is still largely relegated to prototyping applications. Major issues involving volumetric shrinkage and warpage of the printed parts must be addressed in order to employ them for printing functional parts. Moreover, the crystallization behavior and rheology of the polymer are dependent on the MatEx processing conditions. In the current work, the printability of blends of isotactic polypropylene with a soft, low crystallinity propylene based homopolymer is evaluated. Addition of the homopolymer resulted in an increase in the crystallization window of the blends by ~6°C that had a profound impact on the interlayer adhesion and residual stress state. The shear‐dependent melt flow behavior inside the printing nozzle as well as the interlayer chain diffusion and interlayer welding on the print bed were investigated. Rheological characterizations also indicate sufficient dispersion and miscibility of the homopolymer in the neat polypropylene matrix. The incorporation of the homopolymer as an additive significantly improved the dimensional accuracy of the printed parts through better dissipation of the entrapped residual stresses during MatEx. Moreover, the degree of mechanical anisotropy of the parts was significantly lower than that obtained using many 3D printable grade polymers. The findings from this study can be leveraged in toolpath planning, process parameter optimization, and new feedstock development, highlighting current limitations as well as providing valuable insights into necessary processing modifications in order to enable MatEx of next generation semicrystalline polymers.

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Quantifying effect of inorganic filler geometry on the structural, rheological and viscoelastic properties of polypropylene-based thermoplastic elastomers

Cited by 18 publications

References 44 publications

Effect of Styrene-Diene Block Copolymers and Glass Bubbles on the Post-Consumer Recycled Polypropylene Properties

Effect of Styrene-Diene Block Copolymers and Glass Bubbles on the Post-Consumer Recycled Polypropylene Properties

Preparation and Properties of Boron Nitride or Aluminum Nitride Reinforced Glass Fiber/Modified Polyphenylene Sulfide Composites

Customized blends of polypropylene for extrusion based additive manufacturing

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