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Interfacial Tension of Complex Coacervated Mussel Adhesive Protein According to the Hofmeister Series SCIE SCOPUS

Title
Interfacial Tension of Complex Coacervated Mussel Adhesive Protein According to the Hofmeister Series
Authors
Lim, SMoon, DKim, HJSeo, JHKANG, IN SEOKCha, HJ
Date Issued
2014-02-04
Publisher
AMER CHEMICAL SOC
Abstract
Complex coacervation is a liquid liquid phase separation in a colloidal system of two oppositely charged polyelectrolytes or colloids. The interfacial tension of the coacervate phase is the key parameter for micelle formation and interactions with the encapsulating material. However, the relationship between interfacial tensions and various salt solutions is poorly understood in complex coacervation. In the present work, the complex coacervate dynamics of recombinant mussel adhesive protein (MAP) with hyaluronic acid (HA) were determined in the presence of Hofmeister series salt ions. Using measurements of absorbance, hydrodynamic diameter, capillary force, and receding contact angle in the bulk phase, the interfacial tensions of complex coacervated MAP/HA were determined to be 0.236, 0.256, and 0.287 mN/m in 250 mM NaHCOO, NaCl, and NaNO3 solutions, respectively. The sequences of interfacial tensions and contact angles of the complex coacervates in the presence of three sodium salts with different anions were found to follow the Hofmeister ordering. The tendency of interfacial tension between the coacervate and dilute phases in the presence of different types of Hofmeister salt ions could provide a better understanding of Hofmeister effects on complex coacervated materials based on the protein polysaccharide system. This information can also be utilized for microencapsulation and adsorption by controlling intramolecular interactions. In addition, the injection molding dynamics of mussel byssus formation was potentially explained based on the measured interfacial tension of coacervated MAP.
URI
https://oasis.postech.ac.kr/handle/2014.oak/13974
DOI
10.1021/LA403680Z
ISSN
0743-7463
Article Type
Article
Citation
LANGMUIR, vol. 30, no. 4, page. 1108 - 1115, 2014-02-04
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강인석KANG, IN SEOK
Dept. of Chemical Enginrg
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