Accession Number:

AD0283325

Title:

ENCAPSULATED AEROSOLS

Descriptive Note:

Final rept. 1 Apr 1961-31 Mar 1962

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CA

Personal Author(s):

Report Date:

1962-04-01

Pagination or Media Count:

59.0

Abstract:

Methods of aerosol encapsulation included preencapsulation, collection, then redispersion encapsulation by condensation from a supersaturated vapor, or by condensation involving catalytic polymerization and various coagulation methods. The physical and chemical properties of the core and coat materials determine the range of applicability of each method. A useful microencapsulation method, based on coagulation by inertial force was developed. The generation apparatus, consisting of two aerosol generators in series, was utilized to produce many kinds of microcapsules. A fluid energy mill was found useful for the production of some microcapsules. The permeability of microcapsule films and the effect of exposure time and humidity were studied using dibutyl phosphite cores. Physical properties of microcapsule core and coat materials believed to be important in encapsulation were measured.

Subject Categories:

  • Physical Chemistry
  • Chemical, Biological and Radiological Warfare

Distribution Statement:

APPROVED FOR PUBLIC RELEASE