Effects of a titanate coupling agent on the mechanical and thermo‐physical properties of talc‐reinforced polyethylene compounds

Mehrjerdi, Adib Kalantar; Mengistu, Bemnet Abebe; Åkesson, Dan; Skrifvars, Mikael

doi:10.1002/app.40449

Cited by 18 publications

(35 citation statements)

References 31 publications

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“…They reported that filler treatment enhances the polymerfiller adhesion and accordingly improves mechanical properties. Other researchers 64) concluded that the addition of TCA to resultant composites increases the stiffness and tensile strength of composites. This result verifies that such an agent is effective at low filler concentrations.…”

Section: Ceramic Fillersmentioning

confidence: 99%

Review of titanate coupling agents and their application for dental composite fabrication

Elshereksi

Ghazali

Muchtar

et al. 2017

Dental Materials Journal

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Silane is a dominant coupler that is widely used in dentistry to promote adhesion among the components of dental composites. Silica-based fillers can be easily silanized because of their similarly ordered structure. However, silane is hydrolytically degraded in the aqueous oral environment and inefficiently bonds to non-silica fillers. Thus, the development of hydrolytically stable dental composites is an important objective in the research on dental materials. Titanate coupling agents (TCAs) exhibit satisfactory interfacial bonding, enhanced homogeneous filler dispersion, and improved mechanical properties of the composites. Titanates also provide superior hydrolytic stability in wet environments, which should be considered in fabricating dental composites. The addition of a small amount of titanates can improve the resistance of the composites to moisture. This paper reviews the effects of the instability of silanes in moisture on the performance of dental composites and presents TCAs as alternative couplers to silanes for fabricating dental composites.

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Section: Ceramic Fillersmentioning

confidence: 99%

Review of titanate coupling agents and their application for dental composite fabrication

Elshereksi

Ghazali

Muchtar

et al. 2017

Dental Materials Journal

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“…The use of titanate coupling agents is preferred not only because of their bridge effect between the inorganic llers and the polymer matrix, [46][47][48][49] but also because of their suitability for a variety of inorganic llers, including llers having surface hydroxyl groups and llers such as carbonates and carbon black which can not be modied by silane coupling agents.…”

mentioning

confidence: 99%

Synthesis of new polyether titanate coupling agents with different polyethyleneglycol segment lengths and their compatibilization in calcium sulfate whisker/poly(vinyl chloride) composites

Zhang

et al. 2017

RSC Adv.

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Six new polyether titanate coupling agents with different polyethyleneglycol (PEG) segment lengths were prepared in this study and were then used to modify calcium sulfate whiskers (CSWs) in order to improve the compatibility between CSWs and poly(vinyl chloride) (PVC). The chemical structure of these coupling agents was characterized by FTIR, Raman, 1 H NMR and 31 P NMR, and the surface properties of CSWs modified by the coupling agents (mCSWs) were characterized by FTIR, SEM-EDS and XPS. Then, CSW/ PVC and mCSW/PVC composites were prepared using a two-roll mill, and their mechanical and thermal properties were characterized to investigate the effects of the PEG segment length of the coupling agents on the performance and compatibility of the composites. The results show that the new coupling agents can significantly improve the compatibility and the interfacial adhesion between CSWs and the PVC matrix, which results in a significant improvement of the comprehensive performance of mCSW/ PVC composites. PEG4000 shows the best modification effect on CSWs. Finally, the underlying mechanisms are discussed.

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“…In a high‐density polyethylene (HDPE) matrix containing carbon black, the addition of talc particles resulted in higher impact resistance, thermal conductivity, thermal diffusivity, and specific density, but only a marginal improvement was observed in tensile strength (approximately 7.5%) 9 . A subsequent study showed that the addition of a titanate coupling agent to the talc particles resulted in a better filler‐matrix adhesion, consequentially, it was observed an increase in tensile strength of up to 18% and of up to 82% in stiffness, in comparison to the virgin polymer 10 . However, the treated composites showed significantly lower ductility (average 28% decrease in elongation at break) when compared with the composites with untreated filler 10 .…”

Section: Introductionmentioning

confidence: 95%

Influence of soapstone waste on the mechanical and rheological properties of high‐density polyethylene

Sousa

Silva

d’Almeida

2021

J of Applied Polymer Sci

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Soapstone is an abundant mineral in Ouro Preto ‐ Minas Gerais, Brazil and its main destination is in the production of craftsmanship. Rock recovery in those activities is low and the waste disposal is done with little control, which can be hazardous to the environment. This work proposes an alternative use of such potentially harmful waste as reinforcement in a novel polymer matrix composite, which can be particularly attractive to the automotive industry and of which very little information is available elsewhere in the literature. Firstly, the characterization of the waste was performed. Particle size and shape parameters were determined by automated image analysis and the mineralogical composition was determined by X‐ray diffraction, infrared, and Raman spectroscopy. High‐density polyethylene was used as matrix and the composites were made in three matrix/filler ratios: 90/10, 80/20, and 70/30 by weight. Tensile and rheological properties were measured in order to determine the influence of the particles on the polymer mechanical behavior and processing conditions. The materials showed a pseudoplastic behavior and the filler's influence was more pronounced in the 70/30 composites, which showed higher viscosities than the neat polymer. The addition of particles resulted in more brittle and rigid composites, with higher values of tensile strength.

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Effects of a titanate coupling agent on the mechanical and thermo‐physical properties of talc‐reinforced polyethylene compounds

Cited by 18 publications

References 31 publications

Review of titanate coupling agents and their application for dental composite fabrication

Review of titanate coupling agents and their application for dental composite fabrication

Synthesis of new polyether titanate coupling agents with different polyethyleneglycol segment lengths and their compatibilization in calcium sulfate whisker/poly(vinyl chloride) composites

Influence of soapstone waste on the mechanical and rheological properties of high‐density polyethylene

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