Accession Number:

AD0257561

Title:

THE MICROSCOPIC MEASUREMENT OF CRYSTALLIZATION RATES

Descriptive Note:

Technical rept.

Corporate Author:

MASSACHUSETTS UNIV AMHERST

Personal Author(s):

• STEIN,RICHARD S.
• POWERS,JOSEPH

Report Date:

1961-05-08

Pagination or Media Count:

9.0

Abstract:

Relationships are discussed for determining the rates of crystallization of polymers by microscopically measuring the rate of increase of the radius of spherulites. Corrections to the equations are suggested for thin films in the following cases 1 the absence of impingment by the surface or neighboring spherulites 2 when impingement occurs 3 for a truncated spherulite 4 for 2 truncations of the same sphere and 5 for overlapping truncations.

Descriptors:

• *CRYSTALLIZATION
• *CRYSTALS
• *POLYMERS
• *THIN FILM STORAGE DEVICES
• CORRECTIONS
• GROWTH(PHYSIOLOGY)
• MATHEMATICAL ANALYSIS
• MEASUREMENT
• MICROSCOPY
• NUCLEATION
• SURFACES
• VELOCITY

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE