Controllable size, shape and morphology of molybdic acid self-aggregated with rhodamine B to construct functional material

Guan, Zhuo; Zhang, Yu; Zhang, Qiang; Li, Dong Xu

doi:10.1016/j.jcis.2006.05.063

Cited by 14 publications

(10 citation statements)

References 59 publications

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“…100 nm thick, and the regular packing is about several thousand micrometers long. This special structural characteristic is different from the previous reports [12][13][14][15][16][17][18][19][20][21] about this kind of polymer/molybdenum oxide hybrids, in which the polymer and molybdenum oxide layers regularly pack only in several hundred nanometers. And this can be understood as follows.…”

Section: Discussioncontrasting

confidence: 91%

“…From the XRD patterns it is concluded that the organic polymer chains and the inorganic molybdenum oxide chains do not pack on the molecular level. If they were packed on the molecular level, the interlayer spacing in the hybrid would be only several nanometers and strong peaks corresponding to this d value would appear in the small angle area, as reported by many sci- entists [12][13][14][15][16][17][18][19][20][21]. The absence of such peaks clearly shows that the organic and inorganic chains pack on a relatively large scale, as proved by SEM and polarized microscopic images.…”

Section: Resultsmentioning

confidence: 62%

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Self-assembly of polymer and molybdenum oxide into lamellar hybrid materials

Shao

Liao

Luo

et al. 2008

Journal of Colloid and Interface Science

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Section: Discussioncontrasting

confidence: 91%

Section: Resultsmentioning

confidence: 62%

Self-assembly of polymer and molybdenum oxide into lamellar hybrid materials

Shao

Liao

Luo

et al. 2008

Journal of Colloid and Interface Science

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“…We stained polymer suspensions with rhodamine B to determine whether it would stay on the PDMS surface after being rinsed with DI water. Because the structure of the rhodamine B is similar to a tertiary amine, 42 hydrogen bonds are formed between the latter and the carboxyl groups of the polymer. 43 The samples used in this step contained 0.2 wt % polymer and 0.03 wt % rhodamine B and were not neutralized (pH = 3.8) to avoid dye leaching out.…”

Section: ■ Introductionmentioning

confidence: 99%

Rheological and Tribological Behavior of Gels and Emulsions Containing Polymer and Phospholipid

Farias

Hsiao

Khan

2020

ACS Appl. Polym. Mater.

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Oil-in-water (O/W) emulsions are widely used in food, pharmaceutical, and personal care applications. These types of systems often contain hydrophobically modified polymers and phospholipids, where the polymer acts as a rheology modifier or emulsifier, while the phospholipid acts as a functional performance surfactant. However, the underlying mechanism through which the different components affect rheological and tribological characteristics is not well understood. To this end, we take a hierarchical approach, evaluating first the hydrophobically modified polymer alone, followed by polymer and phospholipid and then an O/W emulsion stabilized with the polymer or the phospholipid and polymer combined. We characterize the tribological behavior using a soft model contact consisting of polydimethylsiloxane (PDMS), which has elastic modulus similar to human skin. Bulk rheology results show that the studied systems are shear thinning and have gel-like behavior with elastic modulus increasing substantially upon phospholipids addition. Friction coefficients increase in the elastohydrodynamic regime with increasing sample viscosity. However, systems containing the hydrophobically modified polymer and phospholipids show a lower friction coefficient at the boundary regime. Adsorption studies with a quartz crystal microbalance with dissipation (QCM-D) measurements show that phospholipids are being adsorbed onto the PDMS surface. Confocal laser scanning microscopy of the PDMS surfaces before and after immersion in a hydrophobically modified polymeric suspension containing rhodamine B shows the presence of the polymer on the PDMS surface even after DI water rinse, indicating polymer adsorption, thus resulting in lower friction coefficients at low speeds.

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“…Using chemical precipitation, the h-MoO3 phase with unique rod-like morphology was synthesized by Song et al[13]. Guan et al[349] obtained a nanodisk of hexagonal h-MoO3 by heat treatment of rhodamine B/molybdic acid aggregates (RBMA). Dhage et al[29] fabricated h-MoO3 nanorods via the probe sonication route using ammonium molybdate, urea and sodium dodecyl sulphate at 70 °C.…”

mentioning

confidence: 99%