Association in two‐dimensionally crosslinked poly(methyl methacrylate)

Blumstein, A.; Blumstein, R. B.

doi:10.1002/pol.1967.110050815

Cited by 15 publications

(4 citation statements)

References 8 publications

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“…TEM of the poly(methyl methacrylate)-allyl16 nanocomposite. The first indication of enhanced thermal stability in nanocomposites appears in the reports of Blumstein [17], [18], [19], [20], [21], [22], [23], [24], [25] , who studied the thermal stability of PMMA intercalated within clay. He proposed that the enhanced thermal stability of the PMMA-based nanocomposites was due to both the difference of chemical structure and restricted thermal motion of polymer chains in the silicate interlayers.…”

Section: Resultsmentioning

confidence: 99%

Thermal stability and flame retardancy of poly(methyl methacrylate)-clay nanocomposites

Zhu

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Mauritz

et al. 2002

Polymer Degradation and Stability

181

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Section: Resultsmentioning

confidence: 99%

Thermal stability and flame retardancy of poly(methyl methacrylate)-clay nanocomposites

Zhu

Start

Mauritz

et al. 2002

Polymer Degradation and Stability

181

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“…SAMs of odd-numbered n -alkanethiols differ from corresponding SAMs of even-numbered n -alkanethiols with respect to many properties, including structure, surface free energy, kinetics of molecular exchange, tribology, kinetics of electron transfer, electrochemistry, reactivity, and packing density. − In addition to SAMs, liquid crystals and molecule-capped quantum dots also exhibit odd−even effects. ,− With respect to charge transport in organic systems, the effects of odd- or even-numbered n -alkyl or oligomethylene groups have been observed in pentacene-based field-effect transistors, H-bonded assemblies, and biphenyl-based systems . Thus, it is not astonishing, although still noteworthy, that odd−even effects also influence charge transport across SAMs of alkanethiols. ,− ,, …”

Section: Introductionmentioning

confidence: 99%

Odd−Even Effects in Charge Transport across Self-Assembled Monolayers

et al. 2011

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This paper compares charge transport across self-assembled monolayers (SAMs) of nalkanethiol containing odd and even numbers of methylenes. Ultraflat template-stripped silver (Ag TS ) surfaces supported the SAMs, while top-electrodes of eutectic galliumindium (EGaIn) contacted the SAMs to form metal/SAM//oxide/EGaIn junctions. TheEGaIn spontaneously reacts with ambient oxygen to form a thin (~ 2 nm) oxide layer.This oxide layer enabled EGaIn to maintain a stable, conical shape (convenient for forming microcontacts to SAMs) while retaining the ability to deform and flow upon contacting a hard surface. Conical electrodes of EGaIn conform (at least partially) to 2 SAMs, and generate high yields of working junctions. Ga 2 O 3 /EGaIn top electrodes enable the collection of statistically significant numbers of data in convenient periods of time. The observed difference in charge transport between n-alkanethiols with odd-and even-numbers of methylenes -the "odd-even effect" -is statistically discernable using these junctions, and demonstrates that this technique is sensitive to small differences in the structure and properties of the SAM. Alkanethiols with an even number of methylenes exhibit the expected exponential decrease in current density (J) with increasing chain length, as do alkanethiols with an odd number of methylenes. This trend disappears, however, when the two datasets are analyzed together; alkanethiols with an even number of methylenes typically show higher J than homologous alkanethiols with an odd number of methylenes. The precision of the present measurements, and the statistical power of the present analysis, were only sufficient to identify, with statistical confidence, the difference between an odd and even number of methylenes with respect to J, but not with respect to the tunneling decay constant, β, or the pre-exponential factor, J 0 .3

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“…The polymerization of interlayer methyl methacrylate and methyl acrylate in montmorillonite by means of -y-r-ays has been studied by Blumstein and co-workers and reported in a series of papers [21,[31][32][33][34][35]. These workers were concerned less with the mechanism of polymerization than with the nature of the polymer formed.…”

Section: Activation By Initiators Other Than Claysmentioning

confidence: 99%