Preparation of exfoliated montmorillonite nanocomposites with catechol/zwitterionic quaternized polymer for an antifouling coating

Jeong, Chan Jin; Kang, Eun Bi; Park, Soo Jung; Choi, Kyung Ho; Shin, Gyojic; In, Insik

doi:10.1002/pen.24052

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…Polymer or plasticizer can penetrate through nanoclay galleries. 29,30 The distance d 001 of the Na-MMT was found to be 11.69 Å at 2q ¼ 7.56 . In nanoclay containing samples, the intergallery distance increases from 15.55 Å to 17.96 Å by glycerol content.…”

Section: Xrdmentioning

confidence: 99%

Enzymatic and soil burial degradation of corn starch/glycerol/sodium montmorillonite nanocomposites

Ostadi

Hakimabadi

Nabavi

et al. 2020

Polymers from Renewable Resources

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In this study, effects of glycerol (10, 20, and 30 wt%) and Sodium Montmorillonite (Na-MMT) (0%, 2.5%, and 5%) contents on the degradation of corn starch polymers were investigated. Films were prepared by casting corn starch solution using a modified method to enhance the nanoclay distribution. Biodegradability studies were performed by enzymatic and burial tests using pristine and enriched soils. The biodegradability of samples in pristine soil was faster, and all samples were fully degraded in 6 months. The effect of nanoparticles on the mass reduction in degradation was more pronounced than that of glycerol. In all glycerol concentrations, Na-MMT addition increased tensile strength. FTIR tests showed that degradability was related to glycerol leaching at first and then cleaving of α-1,4 bonds of starch, indicating the action of α-amylase produced by soil microorganisms. Good agreement between soil burial tests and enzymatic degradation was observed. An optimum Glycerol/Clay ratio was observed at which d-spacing and mechanical properties were maximum.

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Section: Xrdmentioning

confidence: 99%

Enzymatic and soil burial degradation of corn starch/glycerol/sodium montmorillonite nanocomposites

Ostadi

Hakimabadi

Nabavi

et al. 2020

Polymers from Renewable Resources

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“…At a low filler loading, usually less than 10 wt.%, the reinforcement efficiency of exfoliated silicate platelets as fillers to form polymer-clay nanocomposites can match that of a conventional composite that is usually made using a relatively higher loading (40-50 wt.%) of classical fillers. This improvement is due to the dispersion of the nanoscale fillers into the matrix, which results in a high surface area with high interactions between the nanoclay and the polymer matrix [19][20][21].…”

Section: Montmorillonite Claymentioning

confidence: 99%

Modified clay for the synthesis of clay-based nanocomposites

Penaloza¹

2019

Epitoanyag - JSBCM

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This review article highlights usual surface modification methodologies in clay fillers for polymer nanocomposites. In clay-based polymer nanocomposites preparation, a key step is the homogeneous dispersion and random orientation of the silicate platelets, like that of montmorillonite (MMT), in the polymer matrix resulting in an exfoliated nanohybrid materials, where significant works in the literature support enhanced and/or new properties of the resulting nanocomposites compared to the bare polymer. In incorporating the MMT clay as a filler in a polymeric material, the surface modification of an MMT clay is necessary. An MMT clay is made up of layered silicates carrying negative charges held together by metal cations found in the galleries between the clay layers. If left unmodified, the native clay exists as aggregates. To improve its miscibility toward organic molecules, it is necessary to modify the clay fillers for polymer nanocomposites.

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Versatile Surface Modification Using Polydopamine and Related Polycatecholamines: Chemistry, Structure, and Applications

Barclay

Hegab

Clarke

et al. 2017

Adv Materials Inter

292

223

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Almost ten years ago, Lee et al. [13] formulated a universal adhesive coating based on observation of the strong attachment by mussels through their byssal threads to virtually all types of inorganic and organic surfaces. The amino acid compositions of the mussel foot proteins that generate the attachment are rich in catechol and amine groups. [13][14][15] These groups associate under marine conditions, forming strong covalent and noncovalent interactions with substrates. [13] This led to the idea that both catechol and amine groups were crucial in forming robust, wide spectrum adhesive nanolayers [16,17] and consequently dopamine was conceived as a powerful building block for spontaneous deposition of thin polymer films. The dopamine monomer is deposited onto unadulterated surfaces through self-assembly and oxidative cross-linking from mild pH aqueous solution in a rapid reaction. This results in a durable, nanoscale, conformal, and hydrophilic coating that can be readily modified to introduce specific surface chemistries for a particular application. [18][19][20][21][22] These bioinspired, polydopamine materials are chemically and structurally indistinguishable from eumelanins found in the human body, [23,24] providing excellent biocompatibility. Additionally, polydopamine has broad electromagnetic absorption and excellent photothermal energy conversion [25] as well as having ionic-electronic hybrid conductivity. [26] Along with the excellent coating performance, these properties provide a vast array of potential applications for polydopamine materials.In this article, we explain what is known about polydopamine and related catecholamine coatings; their formation, the adhesion mechanism, and their physicochemical properties and we also review the applications of these materials (Figure 1). Since 2011, there have been a number of reviews on this subject matter, including general reviews on the physicochemical properties of polydopamine coatings [11,20,[27][28][29] and their applications. [20,27,30] There are also a number of more specific reviews on the chemical synthesis and modulation of polycatecholamine coatings, [31] the biomedical applications of these coatings, [8,[32][33][34] their electronic properties, [26,35] the use of polydopamine to make films at fluid interfaces, [36] in hierarchically constructed particles, [33] and capsules, [30] exploitation of polycatecholamine coatings in membrane filtration, [37] polydopamine-derived carbon materials, [38] and the use of coordination chemistry in catechol-based materials. [39] Nonetheless, this area of research is growing so rapidly [25,27] that many recent Polydopamine and related polycatecholamines can be easily deposited onto almost any surface from mild, aqueous solution. This results in durable, nanoscale coatings that exhibit high biocompatibility and have useful chemical and electronic properties. Additionally, these materials can be readily chemically and physically modified, and consequently, they are used extensively for surface modification. This ...

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Preparation of exfoliated montmorillonite nanocomposites with catechol/zwitterionic quaternized polymer for an antifouling coating

Cited by 6 publications

References 32 publications

Enzymatic and soil burial degradation of corn starch/glycerol/sodium montmorillonite nanocomposites

Enzymatic and soil burial degradation of corn starch/glycerol/sodium montmorillonite nanocomposites

Modified clay for the synthesis of clay-based nanocomposites

Versatile Surface Modification Using Polydopamine and Related Polycatecholamines: Chemistry, Structure, and Applications

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