A Comparative Study on Electrokinetic Properties of Boronic Acid Derivative Polymers in Aqueous and Nonaqueous Media


Gumus O. Y. , Ozkan S., ÜNAL H. İ.

MACROMOLECULAR CHEMISTRY AND PHYSICS, cilt.217, sa.12, ss.1411-1421, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 217 Konu: 12
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1002/macp.201500524
  • Dergi Adı: MACROMOLECULAR CHEMISTRY AND PHYSICS
  • Sayfa Sayıları: ss.1411-1421

Özet

Semiconducting poly(3-aminophenylboronic acid) (PABA) and poly(thiophene-3-boronic acid) (PTBA) nanoparticles are synthesized using KIO3 and (NH4)(2)S2O8 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 (zeta)-potential measurements in aqueous medium by taking the effects of pH, various electrolytes, surfactants, and temperature into account. Colloidally stable range of +30 mV <= zeta <= -30 mV is obtained in the presence of NaCl and Na2SO4 for PABA and PTBA, respectively. Addition of anionic surfactant, sodium dodecyl sulfate, to PABA and PTBA dispersions shifts the zeta-potentials to more negative values and enhances their colloidal stabilities. zeta-Potential values of PABA increase with rising temperature, whereas almost no change is observed for PTBA at elevated temperatures up to 65 degrees C. zeta-Potentials of PABA and PTBA dispersions in silicone oil with the absence and presence of Triton X-100 are also determined to be high.