Evaluation of water repellency in bentonite filled polypropylene composites via physical and mechanical methods

Yildirimkaraman, Oyku; Yıldız, Ümit Hakan; Akar, Alinda Öykü; Tayfun, Ümit

doi:10.1088/2633-1357/ab999e

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…[ 61,62 ] Similarly, the silane‐modified QRZ and FLS phase restricted the water diffusion by donating hydrophobicity to the mineral surface in addition to improved TPU‐mineral interface adhesion. [ 63–66 ]…”

Section: Resultsmentioning

confidence: 99%

“…[61,62] Similarly, the silane-modified QRZ and FLS phase restricted the water diffusion by donating hydrophobicity to the mineral surface in addition to improved TPU-mineral interface adhesion. [63][64][65][66] QRZ-containing composite gave a lower amount of water uptake compared to FLS-filled composite due to the presence of some compounds other than silica such as aluminum oxide and sodium oxide in the structure of FLS mineral as given in Table S1. The silica-rich composition of QRZ resulted in lower water absorption relative to FLS.…”

Section: Water Absorption Analysismentioning

confidence: 99%

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Contribution of surface silanization process on mechanical characteristics of TPU‐based composites involving feldspar and quartz minerals

Bouzmane

Tirkes

Yılmaz

et al. 2022

Vinyl Additive Technology

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In this study, quartz and feldspar powders were surface treated using a silane coupling agent to achieve a more compatible mineral surface with the polymer matrix. Details of surface characteristics of minerals were examined by energydissipative X-ray spectroscopy, contact angle measurements, and infrared spectroscopy. Thermoplastic polyurethane-TPU was compounded with minerals using the melt-blending technique. Mechanical, thermo-mechanical, meltflow, and morphological characterizations of TPU and relevant composites were performed by utilizing tensile and Shore hardness tests, dynamic mechanical analysis (DMA), melt flow index (MFI) measurements, and scanning electron microscopy (SEM), respectively. Water repellency of TPU and composites were also evaluated experimentally. Effects of surface treatments were discussed by comparing the results of composites filled with pristine and modified minerals. Results revealed that enrichment of quartz and feldspar surfaces confer mechanical and thermo-mechanical performance of composites. Mineral inclusions caused no drastic changes to the MFI parameter of TPU. The silane layer on the mineral surface displayed a barrier effect to water uptake of composites. Homogeneous dispersion and improved interfacial adhesion of mineral particles to the TPU phase were confirmed with help of SEM observations. Quartz exhibited slightly higher performance thanks to its silicarich composition. The findings of this research exhibited the considerable influence of the silane layer on the mineral surface on the mechanical performance of TPU-based composites.

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Section: Resultsmentioning

confidence: 99%

Section: Water Absorption Analysismentioning

confidence: 99%

Contribution of surface silanization process on mechanical characteristics of TPU‐based composites involving feldspar and quartz minerals

Bouzmane

Tirkes

Yılmaz

et al. 2022

Vinyl Additive Technology

Self Cite

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Halloysite nanotube loaded polyamide nanocomposites: Structural, morphological, mechanical, thermal and processing behaviors

Akar¹,

Yıldız²,

Tayfun³

2023

International Conference on Humans and Technology: A Holistic and Symbiotic Approach to Sustainable Development: Icht 2022

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Compatibilization of coir fiber and elastomeric polyurethane by green modification routes

Tayfun

Akar²,

Hacıoğlu³

et al. 2023

Green Materials

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Tuning the chemical functionality of lignocellulosic fiber plays a key role in the development of mechanically strong composites to overcome the leakage of compatibility between composite phases which is a major challenge in multidimensional applications of eco-composites. Herein, the coconut fiber (CF) surface was enriched via four kinds of modification routes including mercerization, amino-functional silane treatment, bio-based epoxy resin sizing, and isocyanate treatment to enhance its interfacial adhesion to thermoplastic polyurethane (TPU) matrix. Tensile strength and Shore-hardness parameters of composites were improved by surface-modified CF inclusions. Thermo-mechanical response of TPU was optimized after CF loadings regardless of treatment type. Composite involving silane-modified CF exhibited the lowest water uptake due to the hydrophobic behavior of the silane layer. The increase in interfacial interaction between the TPU matrix and modified CF was confirmed by SEM investigations. The chemically enriched surface of CF confers the performance of composites thanks to improved adhesion in the TPU-CF interface.

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Evaluation of water repellency in bentonite filled polypropylene composites via physical and mechanical methods

Cited by 4 publications

References 22 publications

Contribution of surface silanization process on mechanical characteristics of TPU‐based composites involving feldspar and quartz minerals

Contribution of surface silanization process on mechanical characteristics of TPU‐based composites involving feldspar and quartz minerals

Halloysite nanotube loaded polyamide nanocomposites: Structural, morphological, mechanical, thermal and processing behaviors

Compatibilization of coir fiber and elastomeric polyurethane by green modification routes

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