Polymeric monolayer dynamics at the air/water interface by surface light scattering

Kawaguchi, Masami; Sauer, Bryan B.; Yu, Hyuk

doi:10.1021/ma00194a039

Cited by 84 publications

(88 citation statements)

References 9 publications

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“…The magnitudes of E 0 are larger than those of E 00 ; this result indicates that PEO films spread at the air-water interface behave as solid-like viscoelastic materials. Similar surface concentration dependences of dynamic surface moduli and dilational surface moduli for PEO were also observed upon analysis using a surface light scattering technique [18,19], a mechanical relaxation method under different compression speeds [14], and transverse and longitudinal surface wave methods [20]. [1,17].…”

Section: Surface Pressure Isothermssupporting

confidence: 64%

“…In particular, interfacial rheological properties were determined as a function of the surface concentration of PEO, PMMA, and their blend films at a fixed strain and frequency. Moreover, differences in the surface dilational modulus between PEO and PMMA films were analyzed by taking into account the interfacial properties of the respective polymer films and data obtained by surface light scattering [18,19] and by methods of transverse and longitudinal surface waves [20]. In addition, characteristics of the compatible polymer blend films of PEO/PMMA were compared to those of the incompatible films of PVAc/PMMA [17] from the molar fraction dependence of the surface dilational moduli of the corresponding blend films.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface dilational moduli of poly (ethylene oxide), poly (methyl methacrylate), and their blend films

Kato¹,

Kawaguchi²

2012

Journal of Colloid and Interface Science

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Section: Surface Pressure Isothermssupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Surface dilational moduli of poly (ethylene oxide), poly (methyl methacrylate), and their blend films

Kato¹,

Kawaguchi²

2012

Journal of Colloid and Interface Science

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“…12). 38,120,121 Other important factors, such as high PDI, a low degree of polymerization and the presence of a considerable amount (10-15%) of unreacted macroinimers, also played a role in the formation of smooth monolayers of the hyperbranched polymers at the interfaces. The hyperbranched copolymers with a comparable length of PS and PEO segments and considerably high degree of branching exhibit different surface behavior.…”

Section: Surface Morphologies Of Hyperbranched Polymersmentioning

confidence: 99%

Assembling hyperbranched polymerics

Peleshanko¹,

Tsukruk²

2011

J Polym Sci B Polym Phys

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A condensed overview discusses the existing grafting approaches and the surface behavior of various hyperbranched polymers. We focus on the recent strategies and corresponding characterization of the resulting surface morphologies and structures with a number of relevant recent results from the authors' own research and existing literature. Some results discussed here are important for prospective applications of hyperbranched polymers in biomedical fields, for resistive coatings, tough blends, and reinforced nanocomposites are briefly summarized as well. V C 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 83-100, 2012 KEYWORDS: adsorption; hyperbranched; LB films; structural characterization; surfaces INTRODUCTION This publication presents a condensed overview of the existing grafting approaches as applied to hyperbranched polymers and discusses the surface morphologies of these polymers and corresponding composites and coatings. We mostly focus on the recent strategies and corresponding characterization of the resulting surface morphologies and structures developed in the authors' group with some relevant examples from current literature. A number of relevant results are also included here especially in relation to recent developments related to novel synthetic approaches of hyperbranched molecules as well as emerging applications of hyperbranched polymers and coatings for biomedical purposes, as resistive coatings, tough blends, and reinforced nanocomposites. Some comprehensive recent reviews on highly branched polymers, which are focused mainly on synthetic aspects can be found in literature.

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“…By examining Langmuir films and LB or LS films, it is possible to obtain information about the mechanical, electrical, optical, and chemical properties of oriented molecules at the interface as well as information about structural properties, such as the size and shape of molecules. [5][6][7][8][9][10][11] Poly(ethylene glycol) (PEG) and poly(ethylene oxide) (PEO) are widely studied polymers [12][13][14] with applications in a variety of technological fields such as drug delivery, 15,16 batteries, 17 and biotechnology. 18 Even though PEG and PEO are completely water-soluble at room temperature, PEO of sufficient molar mass can still form Langmuir monolayers at the A/W interface.…”

Section: Introductionmentioning

confidence: 99%

Telechelic Poly(ethylene glycol)−POSS Amphiphiles at the Air/Water Interface

Lee

Deng

et al. 2007

Macromolecules

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Combining two non-surface-active building blocks, oligomeric poly(ethylene glycol) (PEG) and a completely hydrophobic polyhedral oligomeric silsesquioxane (POSS) cage, creates amphiphilic telechelic polymers (POSS-PEG-POSS), which exhibit surface activity at the air/water (A/W) interface. POSS moieties serve as the hydrophobic groups for hydrophilic PEG chains of different number-average molar mass (1, 2, 3.4, 8, and 10 kg mol -1 ). For short PEG chains (1, 2, and 3.4 kg mol -1 ), insoluble monolayers form, whereas POSS end groups were not sufficiently hydrophobic to keep higher molar mass hydrophilic PEG blocks (8 and 10 kg mol -1 ) at the A/W interface. Thermodynamic analyses of the 1, 2, and 3.4 kg mol -1 POSS-PEG-POSS via surface pressurearea per monomer isotherms indicate that the POSS end groups reside at the A/W interface and that the PEG chains are squeezed into the subphase with increasing surface pressure. This conclusion is supported by X-ray reflectivity studies on Y-type Langmuir-Blodgett multilayer films which reveal a double-layer structure with a double-layer spacing of about 3.52 nm. These findings provide a strategy for producing new surface active species from non-surface-active precursors.

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Polymeric monolayer dynamics at the air/water interface by surface light scattering

Cited by 84 publications

References 9 publications

Surface dilational moduli of poly (ethylene oxide), poly (methyl methacrylate), and their blend films

Surface dilational moduli of poly (ethylene oxide), poly (methyl methacrylate), and their blend films

Assembling hyperbranched polymerics

Telechelic Poly(ethylene glycol)−POSS Amphiphiles at the Air/Water Interface

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