Ultrasonication of chitosan nanoparticle suspension: Influence on particle size

GÖKÇE Y., Cengiz B., YILDIZ N., Calimli A., AKTAŞ Z.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, cilt.462, ss.75-81, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 462
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.colsurfa.2014.08.028
  • Dergi Adı: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.75-81
  • Anahtar Kelimeler: Chitosan nanoparticles, Freeze-drying, Ultrasonication, Ionic gelation, SODIUM TRIPOLYPHOSPHATE, DELIVERY-SYSTEM, DRUG-DELIVERY, GENE DELIVERY, STABILITY, POLYDISPERSITY, MONODISPERSE, BEHAVIOR, SORPTION, QUALITY
  • Ankara Üniversitesi Adresli: Evet

Özet

Chitosan nanoparticles have been prepared using an ionic gelation method. The effects of freeze-drying, cryoprotectant (D-trehalose) utilisation and ultrasonication time on the mean particle size, size distribution and stability of nanoparticles were investigated. The size distribution results indicated that freeze-drying caused the particles to agglomerate. Addition of the cryoprotectant and ultrasonication led to a decrease in the particle size. However the sizes of the nanoparticles increased with increasing ultrasonication time. Transmission electron microscopy images revealed that spherical chitosan nanoparticles ranging from 3 to 12 nm were obtained by means of freeze-drying in the presence of cryoprotectant and ultrasonication. These results suggest that cryoprotectant utilisation and controlled ultrasonic treatment are effective for imparting nanoparticle stability. (C) 2014 Elsevier B.V. All rights reserved.