Polyvinyl Benzoate Monolayers

Ries, Herman E.; Beredjick, Nicky; Gabor, Joseph

doi:10.1038/186883b0

Cited by 12 publications

(5 citation statements)

References 3 publications

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“…If hydrophobic groups are present, the adsorption may involve this type of interaction as in the case of SiO 2 . It is the pH of the medium that determines the predominant type of interaction taking place [73], (viii) flexibility of the polymer: the preferred configurationsof the macromolecule will be those allowing for maximum contact between the segments and the interfaces [74]. If the contact at the protective polymer-particle interface is much extended it will block a large part of the particle involved in surface related phenomena.…”

Section: Resultsmentioning

confidence: 99%

“…More rigid polymers such as a Polyvinyl Benzoate group replacing acetate groups in polyvinyl polymers [75] could afford the right number of contacts between metal/oxide and the polymer for a superior protective action and a minimal blocking of the protected surface, (ix) cross-linking of polymer in solution: If diffusive species should interact with protected individual particles, any hindrance of their movement in solution will be detrimental to the chemistry taking place. Increasing branching [74] of terminal groups in polymer chains such as methoxy groups -OCH 3 on polyethylene oxide should avoid cross-linking and facilitate protection, (x) and a polymer host matrix with a gel-glass temperature higher than 100 o C.…”

Section: Resultsmentioning

confidence: 99%

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Thermochromic Properties of VO2-PVP Composite Coatings

Madiba

Simo

Sone

et al. 2015

Materials Today: Proceedings

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Thermochromic Properties of VO2-PVP Composite Coatings

Madiba

Simo

Sone

et al. 2015

Materials Today: Proceedings

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“…The interfacial orientation of polymers containing aromatic rings can be described as "horizontal", that is, the angles between the aromatic rings and the interface plane are small in contrast to the orientation of poly-vinylbenzoate [6].…”

Section: Discussionmentioning

confidence: 99%

“…When an acetate group in the polymer backbone is replaced by a benzoate group, a completely different film orientation results [6].…”

Section: Introductionmentioning

confidence: 99%

Monolayers of methacrylic polymers containing aromatic groups

Caminati

Gabrielli

Ferroni

1988

Colloid & Polymer Sci

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Monolayers of poly-methacrylates containing either aromatic or linear side groups were studied at the air-water interface. The aim of the work is to define the role of the aromatic group in determining the interfacial distribution and orientation of these polymers. Surface pressure measurements show that all the polymers give stable expanded monomolecular films between 288 K and 308 K temperature range.Surface potential and ellipsometric measurements show that both aromatic and aliphatic polymers are in an almost horizontal conformation at the liquid-air interface. From a comparison of the experimental isotherms with Huggins' theory, it was deduced that no preferential interactions exist between benzene rings in the film. In contrast, preferential attractive energies are observed for n-alkylmethacrylates.Further information on the state of the collapsed film was obtained from electron scanning micrographs.

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“…of solution contained 1 mg. of polymer which is reported to spread to 0.38 m2. 1 The spreading was carried out on deionized water at a pH of 6.2.…”

Section: Methodsmentioning

confidence: 99%

Structure and electrical properties of poly(vinyl benzoate) monolayers

Scala

Handy

1965

J of Applied Polymer Sci

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synopsisThe structure and electrical properties of mono-and multilayer poly(Viny1 benzoate) (PVB) films have been studied by using the films as ultrathin insulating spacers between evaporated electrodes of Cu and Sn. PVBstearic acid mixtures were also used. From capacity measurements, autoradiograph, and the layering conditions it is concluded that the compacted PVB f i l m on the aqueous subphase has an average area per monomer unit of -8 A.* and is composed of several superimposed layers of molecules rather than a single layer. Usually each transfer operation yielded a PVB insulating f i l m whose average thickness was estimated to be -37 A. Under certain and still unknown conditions, the PVB layer appeared to separate on transfer to give an average film thickness of approximately half of this value. The dielectric constant of the PVB flms at room temperature and 1 kcycle/sec. was estimated to be -3.3, and was found to be frequency-dependent within the measured range of 100 cycles/sec. to 20 kcycles/sec. Conduction through the metal-PVB-metal sandwiches waa highly nonlinear and waa believed to take place by tunneling in the thinner films (-20 A.) and by field-assisted thermionic emission in the thicker films (-75 A.). Interpretation of the conduction measurements in terms of a molecular model was not possible because of the wide variations in electrical properties and lack of reproducibility.

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Polyvinyl Benzoate Monolayers

Cited by 12 publications

References 3 publications

Thermochromic Properties of VO2-PVP Composite Coatings

Thermochromic Properties of VO2-PVP Composite Coatings

Monolayers of methacrylic polymers containing aromatic groups

Structure and electrical properties of poly(vinyl benzoate) monolayers

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