2015
DOI: 10.1016/j.polymer.2015.03.056
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Influence of initiator fragments as chain ends on the Tg-confinement effect and dewetting of thin films of ultralow molecular weight polymer

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Cited by 19 publications
(55 citation statements)
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“…8 Results from previous studies suggest that the magnitude of T g -confinement effects attributable to attractive interfacial interactions depends on the interfacial concentration and strength of such interactions between the polymer and the substrate. 17,19,20,31,[132][133][134][135] For polymers which undergo hydrogen bonding with hydroxyl groups on the substrate surface, the magnitude of T g -confinement effects depends on the electronegativity of the bonding atom. For example, poly-2-vinylpyridine (P2VP) (atactic) thin films exhibit much larger T g increases than (atactic) PMMA films of similar thickness.…”
Section: Design and Fabrication Of Supported Pmma Nanotubesmentioning
confidence: 99%
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“…8 Results from previous studies suggest that the magnitude of T g -confinement effects attributable to attractive interfacial interactions depends on the interfacial concentration and strength of such interactions between the polymer and the substrate. 17,19,20,31,[132][133][134][135] For polymers which undergo hydrogen bonding with hydroxyl groups on the substrate surface, the magnitude of T g -confinement effects depends on the electronegativity of the bonding atom. For example, poly-2-vinylpyridine (P2VP) (atactic) thin films exhibit much larger T g increases than (atactic) PMMA films of similar thickness.…”
Section: Design and Fabrication Of Supported Pmma Nanotubesmentioning
confidence: 99%
“…These results strongly reinforce the idea that T g -confinement behavior is affected by the number and strength of attractive polymer-substrate interactions. 17,19,20,[31][32][33]132,133,135 These results have a number of implications regarding the T g -confinement behavior of polymer nanocomposites. 132,[149][150][151] If different studies of the confinement behavior of a given polymernanofiller hybrid do not employ nanofiller of identical size and monolayer capacity of surface hydroxyl groups, then quantitatively different T g -confinement effects may be expected for polymers that can undergo hydrogen bonding.…”
Section: Design and Fabrication Of Supported Pmma Nanotubesmentioning
confidence: 99%
See 1 more Smart Citation
“…Thin polymer film can become unstable and spontaneously rupture whenever the intermolecular disjoining pressure increases with increased film thickness [6][7][8][9][10][11][12][13][14][15][16][17] . The dewetting of thin polymer film progresses with the formation and growth of randomly placed holes with a certain mean length scale.…”
Section: Introductionmentioning
confidence: 99%
“…For oligomers and low molecular weight polymers, these end groups can significantly influence the thermophysical properties. For example in thin films, the end group from initiator fragments significantly impacts the thickness dependence of the glass transition temperature . These end‐group effects tend to decrease as the molecular weight of the polymer increases with the impact of the end group becoming vanishingly small at sufficiently high molecular weight …”
Section: Introductionmentioning
confidence: 99%