Investigation of Ultrasonic Emulsifying Processes of a Linseed Oil and Water Mixture

• Autorzy: Skumiel A. , Józefczak A. , Heller K. , Hornowski T. , Wielgusz K.
• Języki publikacji: EN

Abstrakty

EN

Ultrasonic emulsifying processes of immiscible liquids can be used to obtain stable emulsions. The authors used an ultrasonic sandwich head with an energy concentrator to obtain a suitable value of the energy density necessary for the emerge of ultrasonic cavitation. Two piezoelectric ring (D_ext = 50 mm) transducers of Pz-26 type produced by FERROPERM were used to design the ultrasonic sandwich head. The frequency of the ultrasonic wave was 18.4 kHz and the excitation time of the ultrasonic transducer exiting 5 minutes. Visible bubbles during the generation of ultrasonic waves appeared in the mixture after exceeding the cavitation threshold. The authors determined also the cavitation threshold by measuring the electrical voltage conducted to the transducers. To receive long-lasting emulsion, the electrical voltage attained 300 Vpeak. The dispersion dependence on the emulsifying time was determined. The emulsion of linseed oil and water was stable through some months without surfactants.

Słowa kluczowe

EN

ultrasonic cavitation; ultrasonic emulsifying processes; emulsion; cavitation threshold

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2013
• Tom: Vol. 38, No. 3
• Strony: 297--301
• Opis fizyczny: Bibliogr. 10 poz., tab., wykr.

Twórcy

autor

Skumiel A.

• Institute of Acoustics, Faculty of Physics, Adam Mickiewicz University Umultowska 85, 61-614 Poznań, Poland

autor

Józefczak A.

• Institute of Acoustics, Faculty of Physics, Adam Mickiewicz University Umultowska 85, 61-614 Poznań, Poland

autor

Heller K.

• Institute of Natural Fibres and Medicinal Plants Wojska Polskiego 71b, 60-630 Poznań, Poland

autor

Hornowski T.

• Institute of Acoustics, Faculty of Physics, Adam Mickiewicz University Umultowska 85, 61-614 Poznań, Poland

autor

Wielgusz K.

• Institute of Natural Fibres and Medicinal Plants Wojska Polskiego 71b, 60-630 Poznań, Poland

Bibliografia

• 1. Basaran T.K., Demetriades K., McClements D.J. (1998), Ultrasonic imaging of gravitational separation in emulsions, Colloids and Surfaces, A: Physicochemical and Engineering Aspects, 136, 1-2, 169-181.
• 2. Elpiner I.E. (1968), Ultrasounds - physical, chemical and biological effects [in Polish: Ultradźwięki – działanie fizykochemiczne i biologiczne], PWN, Warszawa.
• 3. Gudra T. (2000), Analysis of a resonator with a directional ultrasonic vibration converter of R-L type using the finite elements method, Archives of Acoustics, 25, 2, 157-174.
• 4. Gudra T., Ciszewski T. (1979), Patent Description No. 101987, Layered electro-acoustic transducer and method for producing layered electroacoustic transducer [in Polish: Warstwowy przetwornik elektro-akustyczny i sposób wytwarzania warstwowego przetwornika elektroakustycznego], The Patent Office PRL.
• 5. Jagodziński Z. (1997), Ultrasonic transducers [in Polish: Przetworniki ultradźwiękowe], WKŁ, Warszawa.
• 6. Jaroszyk F. [Ed.] (1993), Medical Biophysics, [in Polish: Biofizyka medyczna], Wydawnictwo Uczelniane Akademii Medycznej im. Karola Marcinkowskiego, Poznań.
• 7. Lee R.F. (1999), Agents Which Promote and Stabilize Water-in-Oil Emulsions, Spill Science & Technology Bulletin, 5, 2, 117-126.
• 8. Niesteruk R. (1996), Thermophysical properties of food [in Polish: Właściwości termofizyczne żywności], Rozprawy Naukowe Nr 33, Wydawnictwa Politechniki Białostockiej, Białystok.
• 9. Nowicki A. (1998), Basics of Ultrasonography [in Polish: Podstawy ultrasonografii], PWN, Warszawa.
• 10. Śliwiński A. (2001), Ultrasounds and its applications [in Polish: Ultradźwięki i ich zastosowania], WNT, Warszawa