A Biomimetic Approach to Enhancing Interfacial Interactions: Polydopamine-Coated Clay as Reinforcement for Epoxy Resin

Yang, Liping; Phua, Si Lei; Teo, Jun Kai Herman; Toh, Cher Ling; Lau, Soo Khim; Ma, Jan; Lu, Xuehong

doi:10.1021/am200532j

Cited by 253 publications

(192 citation statements)

References 43 publications

(52 reference statements)

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“…20 The greater improvement of the properties at 0.2% can be explained by the dispersion of the clay platelets. This dispersion causes a higher gain in surface area of these particles, thus producing a larger polymer/nanofiller interfacial area, [21][22][23] which enables most of the atoms on the surface to participate in the interaction between the phases, facilitating the transmission of forces between them and increasing the strengthening effect. This behavior is similar to that observed in other nanofillers.…”

Section: Discussionmentioning

confidence: 99%

The Use of Montmorillonite Clays as Reinforcing Fillers for Dental Adhesives

Menezes

Silva

2016

Mat. Res.

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The aim of this study was to obtaining an adhesive made of dimethacrylate copolymer and clay particles in different concentrations. The samples were prepared by light curing and were evaluated by XRD, FTIR and TGA as well as by measuring flexural strength, elasticity modulus and tensile resistance. The XRD and the mechanical test results indicated that the system with 0.2% clay is exfoliated, while the highest concentrations showed the agglomeration of these clays. FTIR was used to determine the conversion, and showed that use of clays particles are unable to significantly alter the polymerization until 1.0%. However, for the group containing 1.5%, there was a decline in this index. In the thermogravimetric analysis, only the groups with 0.2% of clays showed increased thermal resistance. In conclusion, the incorporation of clay at 0.2% concentration produces a well-dispersed system and can be applied as a dental adhesive.

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Section: Discussionmentioning

confidence: 99%

The Use of Montmorillonite Clays as Reinforcing Fillers for Dental Adhesives

Menezes

Silva

2016

Mat. Res.

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“…33,34 For epoxy mixtures with varying HBPSi-2 loadings, the viscosity of the mixture decreases as the HBPSi-2 loading increases, indicating an improved owability aer the addition of HBPSi-2 ( Fig. 2(b)).…”

Section: Rheology Of Modied Systemmentioning

confidence: 97%

Simultaneous reinforcement and toughness improvement of an epoxy–phenolic network with a hyperbranched polysiloxane modifier

et al. 2018

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An epoxy-phenolic network is modified with hyperbranched polysiloxane (HBPSi). The addition of HBPSi-2, which has medium molecular weight, can significantly decrease the viscosity of the uncured epoxyphenolic system and increase the crosslinking density and homogeneity of the cured crosslinking network. With 10% HBPSi-2, the mechanical properties of the samples are improved comprehensively: tensile modulus and maximum strength increase by 11.4% and 36.2%, respectively, while elongation at break and impact strength increase by 153.8% and 186.7%, respectively. The comprehensive improvements in the mechanical properties are attributed to combined effects of crosslinking density, network rigidity, cohesive density and the matrix-modifier compatibility. What is more, HBPSi-2 also significantly increases the char yield of the material and decreases the thermal weight loss rate, indicating an improved thermal stability. All these results may provide a new strategy for toughness and strength improvement of the epoxy-phenolic network.

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“…14 polydopamine anchored on the surface of a variety of materials. [6][7][8][9] For example, Lee et al studied the dopamine polymerization and coating function on the surface of different organic (e.g., polyethylene) and inorganic materials. 6 The results showed that there were a lot of oxygen-containing groups on the dopamine oxidation film surface on polyethylene with good adhesion properties.…”

Section: Introductionmentioning

confidence: 99%

Design dopamine-modified polypropylene fibers towards removal of heavy metal ions from water

et al. 2017

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Enhanced broadband near-IR luminescence and gain spectra of bismuth/erbium co-doped fiber by 830 and 980 nm dual pumping AIP Advances 7, 045012 (2017) A simple approach to preparing dopamine-modified polypropylene fibers with a controllable polydopamine amount is supplied. By the dopamine modification, the hydrophobic polypropylene fibers have been changed into hydrophilic. The hydrophilicity can be improved by increasing the amount of polydopamine, as revealed by the contact angle evolutions. The hydrophilic dopamine-modified polypropylene fibers can rapidly and effectively remove copper and lead ions in water. Moreover, the performance of removing heavy metals is prominently improved as the polydopamine amount increases. This is because the polydopamine introduction can supply many available sites for adsorbing heavy metal ions, as revealed by theoretical simulation results. These results are crucial in future engineering fiber filters towards efficiently removing heavy metal ions using dopamine-modified polypropylene fibers. © 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license

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A Biomimetic Approach to Enhancing Interfacial Interactions: Polydopamine-Coated Clay as Reinforcement for Epoxy Resin

Cited by 253 publications

References 43 publications

The Use of Montmorillonite Clays as Reinforcing Fillers for Dental Adhesives

The Use of Montmorillonite Clays as Reinforcing Fillers for Dental Adhesives

Simultaneous reinforcement and toughness improvement of an epoxy–phenolic network with a hyperbranched polysiloxane modifier

Design dopamine-modified polypropylene fibers towards removal of heavy metal ions from water

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