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A Comparative Study on Electrokinetic Properties of Boronic Acid Derivative Polymers in Aqueous and Nonaqueous Media
Author(s) -
Gumus Omer Yunus,
Ozkan Seyma,
Unal Halil Ibrahim
Publication year - 2016
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201500524
Subject(s) - zeta potential , electrokinetic phenomena , chemistry , aqueous solution , sodium dodecyl sulfate , boronic acid , pulmonary surfactant , electrolyte , polymer , polymer chemistry , nanoparticle , nuclear chemistry , chromatography , organic chemistry , materials science , nanotechnology , biochemistry , electrode
Semiconducting poly(3‐aminophenylboronic acid) (PABA) and poly(thiophene‐3‐boronic acid) (PTBA) nanoparticles are synthesized using KIO 3 and (NH4) 2 S 2 O 8 as initiators, respectively; and structural, morphological, and surface characterizations are carried out by various well‐known techniques. Electrokinetic properties of PABA and PTBA dispersions are determined by zeta ( ζ )‐potential measurements in aqueous medium by taking the effects of pH, various electrolytes, surfactants, and temperature into account. Colloidally stable range of +30 mV ≤ ζ ≤ −30 mV is obtained in the presence of NaCl and Na 2 SO 4 for PABA and PTBA, respectively. Addition of anionic surfactant, sodium dodecyl sulfate, to PABA and PTBA dispersions shifts the ζ ‐potentials to more negative values and enhances their colloidal stabilities. ζ ‐Potential values of PABA increase with rising temperature, whereas almost no change is observed for PTBA at elevated temperatures up to 65 °C. ζ ‐Potentials of PABA and PTBA dispersions in silicone oil with the absence and presence of Triton X‐100 are also determined to be high.