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Journal of Microencapsulation
Micro and Nano Carriers
Volume 4, 1987 - Issue 2
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Research Article

Specific surface area measurement of ethyl cellulose-walled microcapsules containing theophylline

A. M. El-Helw Chelsea Department of Pharmacy, King's College London, University of London, Manresa Road, London, SW3 6LX, UK
&
J. R. Nixon Chelsea Department of Pharmacy, King's College London, University of London, Manresa Road, London, SW3 6LX, UK
Pages 111-119 | Received 11 Sep 1986, Accepted 09 Oct 1986, Published online: 27 Sep 2008

References

  • Agyilirah G. A., Nixon J. R. Preparation, tabletting and release characteristics of ethyl cellulose-walled microcapsules of phenobarbitone sodium. Acta Pharmaceutica Technologica 1980; 26: 251–254
  • Anderson W., Armstrong P. A. M., Abed El-Aziz S. A. M. Transit in free films: surface heterogeneity. Journal of Pharmacy and Pharmacology 1973; 25: 137P–138P, Suppl.
  • Jalsenjak I., Nicolaidu C. F., Nixon J. R. The in vitro dissolution of phenobarbitone sodium from ethyl cellulose microcapsules. Journal of Pharmacy and Pharmacology 1976; 28: 912–914
  • Jalenjak I., Nixon J. R., Senjkovic R., Stivic I. Sustained-release dosage forms of microencapsulated isoniazid. Journal of Pharmacy and Pharmacology 1980; 32: 678–680
  • Lovell C. H. B. Surface area determination. Proceedings of the Society of Chemical Industry Conference, Bristol. Butterworth Scientific Pub., Guildford 1970
  • Madan P. L., Luzzi L. A., Price J. C. Microencapsulation of a waxy solid: wall thickness and surface appearance studies. Journal of Pharmaceutical Sciences 1974; 63: 280–284
  • Nixon J. R., Harris M. S. Preparation and in vitro release of a microencapsulation hormone. Microencapsulation: New Techniques and Application, T. Kondo. Techno Books, Tokyo 1979; 93–106
  • Nixon J. R., Meleka M. R. The preparation and characterization of ethyl-cellulose-walled theophylline microcapsules. Journal of Microencapsulation 1984; 1: 53–64
  • Reyes Z., Park M. US Patent. 3,173,878, 1965

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