Characterization of Phase Separation in Film Forming Biopolymer Mixtures

2005 ◽  
Vol 6 (2) ◽  
pp. 932-941 ◽  
Author(s):  
Maria Petersson ◽  
Niklas Lorén ◽  
Mats Stading
Keyword(s):  
Phase Separation ◽  
Film Forming

scholarly journals Stability of Film-Forming Dispersions: Affects the Morphology and Optical Properties of Polymeric Films

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1464
Author(s):  
Maria Gabriela De Paola ◽  
Rosy Paletta ◽  
Catia Giovanna Lopresto ◽  
Giuseppe Emanuele Lio ◽  
Antonio De Luca ◽  
...  
Keyword(s):  
Optical Properties ◽  
Phase Separation ◽  
Food Packaging ◽  
Uv Light ◽  
Ultra Violet ◽  
Dispersed Phase ◽  
Significant Information ◽  
Film Forming ◽  
Light Protection

Starch-based films are promising alternatives to synthetic films in food packaging. They were widely studied in terms of mechanical and optical properties. In food packaging, optical properties are of great interest because ultra violet (UV-light) protection is strictly required. Nevertheless, the characterization of film-forming dispersions was poorly addressed, especially regarding its correlation with the film produced. In this work, we characterized film-forming dispersions at different compositions of starch and carboxymethyl cellulose (CMC) by Turbiscan. This instrument is based on multiple light scattering and gives significant information about the miscibility of polymers in the dispersed phase. Indeed, it identifies the phenomena of destabilization and phase separation before their visibility to the unaided eye. This work aimed to study whether the homogeneous/inhomogeneous morphology of films could be forecast by the analysis of profiles obtained in the dispersed phase. The films produced were investigated by optical microscopy and absorbance analysis. As the CMC fraction increased, Turbiscan showed reduced phase separation. This implies better miscibility of mixture components and higher gelification degree. The related film was more homogeneous and presented higher UV absorbance. Consequently, film-forming dispersions and optical properties of films are strictly correlated and Turbiscan-based analysis is very useful to investigate the dispersion stability and predict the film quality.

Preparation and Characterization of Membranes Formed by Nonsolvent Induced Phase Separation: A Review

2011 ◽  
Vol 50 (7) ◽  
pp. 3798-3817 ◽  
Author(s):  
Gregory R. Guillen ◽  
Yinjin Pan ◽  
Minghua Li ◽  
Eric M. V. Hoek
Keyword(s):  
Phase Separation

scholarly journals Microfluidic characterization of macromolecular liquid–liquid phase separation

Lab on a Chip ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 4225-4234
Author(s):  
Anne Bremer ◽  
Tanja Mittag ◽  
Michael Heymann
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Precise Determination ◽  
Phase Morphology ◽  
Liquid Phase Separation ◽  
Dense Phase ◽  
Liquid Liquid Phase Separation

The microfluidic phase chip allows precise determination of the saturation concentrations of biomolecules that undergo liquid–liquid phase separation while also monitoring the dense-phase morphology.

Phase separation behavior and characterization of ovalbumin and propylene glycol alginate complex coacervates

2020 ◽  
Vol 108 ◽  
pp. 105978 ◽  
Author(s):  
Wenjie Zou ◽  
Fayez Khalaf Mourad ◽  
Xinyue Zhang ◽  
Dong U. Ahn ◽  
Zhaoxia Cai ◽  
...  
Keyword(s):  
Phase Separation ◽  
Propylene Glycol ◽  
Propylene Glycol Alginate ◽  
Phase Separation Behavior ◽  
Separation Behavior

The characterization of N-methyl, N-ethyl, N-propyl, N-butyl and N-hexyl chitosans, novel film-forming polymers

1983 ◽  
Vol 16 ◽  
pp. 295-308 ◽  
Author(s):  
Riccardo A.A. Muzzarelli ◽  
Fabio Tanfani ◽  
Monica Emanuelli ◽  
Sabina Mariotti
Keyword(s):  
Film Forming

Preparation and characterization of microporous poly(vinyl butyral) membranes by supercritical CO2-induced phase separation

2008 ◽  
Vol 312 (1-2) ◽  
pp. 115-124 ◽  
Author(s):  
Zhiyi Li ◽  
Huihua Tang ◽  
Xuewu Liu ◽  
Yuanjing Xia ◽  
Jingzhi Jiang
Keyword(s):  
Phase Separation ◽  
Supercritical Co2 ◽  
Vinyl Butyral
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