SOME VISCOELASTIC PROPERTIES OF AMMINE SUBSTITUTED DICHLOROZINC POLYMERS
Abstract
An attempt was made to determine the molecular weight, distribution of molecular weights, and the relaxation mechanism of monammine-dichlorozinc. The study of ammine substituted dichlorozincs included determinations of (1) glass transition temperatures; (2) modulus-temperature curves; and (3) maximum relaxation times as function of temperature. Glass transition temperatures were obtained by determining the weight of the samples in toluene as a function of temperature, the inflection point yielding transition temperature value. The results for ZnCl2.1/2NH3, ZnCl2.1 NH3, and ZnCl2.1 1/2 NH3 were close, the values varying between 6 to 11 + or -2. The modulustemperature curve of the monoammine sample was similar to that of polystyrene or inorganic polymers such as amorphous Se. No rubbery plateau was encountered. A preliminary calculation yielded the value of 30 monomer units for the monoammine on the basis of stress relaxation studies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1960
- Accession Number
- AD0259528
Entities
People
- A. Eisenberg
- A.v. Tobolsky
- D. Katz
Organizations
- Princeton University