نتایج جستجو برای: nanoparticles surfactant free ultrasonic

تعداد نتایج: 660541  

2016
KRISHNA MOHAN CHINNALA JITHAN AUKUNURU Ranga Reddy

Objective: The objective of the current research work was to prepare and evaluate novel subcutaneous sustained release polymeric nanoparticles for low molecular weight heparin (LMWH). Methods: In this study, we prepared subcutaneously administered polymeric nanoparticles encapsulating LMWH using different grades of polycaprolactons (PCL) (14k, 45k, 80k) and 0.1% Polyvinyl alcohol (PVA) solution...

A study on the extraction of Acetaminophen (ACTP) which is also known as paracetamol, from aqueous solution by emulsion liquid membrane process using Taylor-Couette Column (TCC) was investigated. An ELM consists of three phase system which are the external, membrane and internal phases. The external phase containing the ACTP aqueous solution to be treated. Basically, the internal and membrane p...

1997
Jun Gao Chi Wu

Poly(N-isopropylacrylamide) (PNIPAM) adsorbed on surfactant-free polystyrene (PS) nanoparticles has been studied by a combination of static and dynamic laser light scattering (LLS). In static LLS, the amount of PNIPAM adsorbed on the nanoparticles was determined from the absolute excess scattered intensity; and in dynamic LLS, the temperature dependence of the hydrodynamic radius of the nanopar...

In the present work, the synthesis of Barium hexaferrite (BaFe12O19) nanoparticles in thepresence of a large excess amount of OH− anions by the hydrothermal method in the presence and absence of surfactants such as Sodium dodecyl benzene sulfonate and Triton X-114 was reported. The optimized temperature in the absence of surfactant was determined (200 °C) and then Barium hexaferrite nanoparticl...

Journal: :Applied sciences 2023

Electrical and optical properties of graphene/silver nanoparticles hybrid suspensions intended for use in inkjet printing technologies were studied. Few-layered graphene particles manufactured via a direct ultrasonic-assisted liquid-phase exfoliation route water/surfactant system, whereas silver synthetized using polyol process. Hybrid mixtures showed significant reduction mean particle size wh...

2015
Eun-Sol Ha Jeong-Soo Kim In-hwan Baek Jin-Wook Yoo Yunjin Jung Hyung Ryong Moon Min-Soo Kim

In the present study, solid dispersion nanoparticles with a hydrophilic polymer and surfactant were developed using the supercritical antisolvent (SAS) process to improve the dissolution and oral absorption of megestrol acetate. The physicochemical properties of the megestrol acetate solid dispersion nanoparticles were characterized using scanning electron microscopy, differential scanning calo...

Journal: :MATEC web of conferences 2021

ZnO/Au is expected to exhibit catalytic properties by absorbing ultraviolet and visible light because ZnO Au nanoparticles can absorb light, respectively. Doping studies on (ZnO/Au) have been conducted expand the absorption wavelength range. This study generates particles an ultrasonic spray pyrolysis method (USP). To prevent particle aggregation, Triton X-100, a non-ionic surfactant, added, it...

2017
Xuyan You Xiaohong Geng Xiue Liu Yang Yu Zhihong Jing

Copper sulfide nanotubes and nanoparticles have been successfully synthesized by a hydrothermal process at 160 °C for 10 h, employing copper chloride (CuCl2·2H2O) and thioacetamide as starting materials, polyethylene glycol 400 as surfactant. The products are characterized by X-ray power diffraction, scanning electron microscopy, UV–vis spectroscopy and fluorescence spectroscopy, respectively. ...

2015
Wojasiński Michał Duszyńska Ewa Ciach Tomasz

Hydroxyapatite Ca10(PO4)6(OH)2 nanoparticles have been successfully synthesized by the wet chemical precipitation method at 60 °C in the presence of biocompatible natural surfactant-lecithin. The composition and morphology of nanoparticles of hydroxyapatite synthesized with lecithin (nHAp-PC) was studied by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning el...

Journal: :Chemical communications 2012
Govindachetty Saravanan Toru Hara Hideki Yoshikawa Yoshiyuki Yamashita Shigenori Ueda Keisuke Kobayashi Hideki Abe

Intermetallic Pt(3)Ti nanoparticles are solubilized in water by using a generation-five, hydroxyl-terminated, poly(amidoamine) dendrimer, G5OH, as a post-synthesis surfactant. Pt(3)Ti nanoparticles, encapsulated in G5OH and dispersed over the electrode surface, exhibited a superior catalytic activity toward the electro-reduction reaction of oxygen compared to as-prepared, highly agglomerated na...

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