Assemblies of Hydrophobically Modified Starch Nanoparticles Probed by Surface Tension and Pyrene Fluorescence

2020 ◽  
pp. 61-75 ◽  
Author(s):  
Damin Kim ◽  
Ryan C. Amos ◽  
Mario Gauthier ◽  
Jean Duhamel
Keyword(s):  
Surface Tension ◽  
Modified Starch ◽  
Pyrene Fluorescence ◽  
Hydrophobically Modified ◽  
Starch Nanoparticles

scholarly journals Applications of Pyrene Fluorescence to the Characterization of Hydrophobically Modified Starch Nanoparticles

Langmuir ◽  
2018 ◽  
Vol 34 (29) ◽  
pp. 8611-8621 ◽  
Author(s):  
Damin Kim ◽  
Ryan Amos ◽  
Mario Gauthier ◽  
Jean Duhamel
Keyword(s):  
Modified Starch ◽  
Pyrene Fluorescence ◽  
Hydrophobically Modified ◽  
Starch Nanoparticles

Adsorption of Hydrophobically Modified Poly(acrylic acid) Sodium Salt at the Air/Water Interface by Combined Surface Tension and X-ray Reflectivity Measurements

Langmuir ◽  
1999 ◽  
Vol 15 (6) ◽  
pp. 2112-2119 ◽  
Author(s):  
Frédéric Millet ◽  
Michael Nedyalkov ◽  
Benjamin Renard ◽  
Patrick Perrin ◽  
Françoise Lafuma ◽  
...  
Keyword(s):  
Surface Tension ◽  
Acrylic Acid ◽  
Sodium Salt ◽  
Water Interface ◽  
X Ray ◽  
Hydrophobically Modified ◽  
Acid Sodium Salt ◽  
Air Water Interface ◽  
Poly Acrylic Acid

Mechanical Degradation and Changes in Conformation of Hydrophobically Modified Starch

2006 ◽  
Vol 7 (9) ◽  
pp. 2671-2679 ◽  
Author(s):  
Lars Nilsson ◽  
Mats Leeman ◽  
Karl-Gustav Wahlund ◽  
Björn Bergenståhl
Keyword(s):  
Mechanical Degradation ◽  
Modified Starch ◽  
Hydrophobically Modified

Time-Resolved Pyrene Fluorescence for Determination of Polymer Surface Polarity: Correlations with Surface Tension

1995 ◽  
Vol 49 (2) ◽  
pp. 211-215 ◽  
Author(s):  
Kaisyang Chang ◽  
R. Ken Forcé
Keyword(s):  
Surface Tension ◽  
Polymer Surface ◽  
Standard Test ◽  
Test Method ◽  
Fluorescence Measurement ◽  
Surface Polarity ◽  
Time Resolved ◽  
Pyrene Fluorescence ◽  
Tension Level ◽  
Long Lifetime

Pyrene time-resolved fluorescence has been applied to correlate the surface tension levels obtained for polyethylene and polypropylene films after exposure to corona-discharge treatment. The surface tension level of the films was validated with surface tension test fluids according to the ASTM D2578 standard test method. Although in direct contact with air, pyrene showed an extremely long lifetime upon deposition on the polymer films, which approached the lifetime of pyrene in freeze/pump/thaw deoxygenated hexane. The I/III ratio of pyrene fluorescence at 373 and 384 nm, designated as bands I and III, was determined at 150-ns delay relative to the time at laser maximum. Prolonged time delay was imposed before fluorescence measurement in order to minimize the background interferences from the blank films. Measurements of the time-resolved pyrene fluorescence I/III ratio from pyrene/ethanol depositions showed averages of 0.63, 0.56, and 0.49 for 42, 35, and 30 dyne/cm treated films. The uncertainty of the measurements was estimated to be 1–2 dyne/cm. Application of the pyrene I/III ratio can be used easily to monitor incorrectly and nonuniformly treated polymer film surfaces.

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