Accession Number:

AD0483067

Title:

THE RATIO OF THE GLASS TEMPERATURE TO THE MELTING POINT IN POLYMERS.

Descriptive Note:

Technical rept.,

Corporate Author:

ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)

Personal Author(s):

• Lee, W. A.
• Knight, G. J.

Report Date:

1966-01-01

Pagination or Media Count:

39.0

Abstract:

A study of the ratio of the glass temperature to the melting point of 138 polymers is described. Contrary to some other workers observations on smaller numbers of polymers, the ratio is found to vary widely between 0.5 and 0.8 and 20 of polymers have ratios outside this range. There is no basis for distinguishing between symmetrical and unsymmetrical polymers or between their crystalline forms. It is suggested that this result is not wholly unexpected. Author

Descriptors:

• *PLASTICS
• MELTING POINT
• TRANSITION TEMPERATURE
• POLYETHYLENE PLASTICS
• VINYL PLASTICS
• BUTADIENES
• FLUORINE COMPOUNDS
• STYRENE PLASTICS
• POLYMERS
• NYLON
• PHYSICAL PROPERTIES
• MOLECULAR STRUCTURE
• CARBONATES
• ESTERS
• ACRYLIC RESINS
• PHENOLIC PLASTICS
• ANHYDRIDES
• CARBOXYLIC ACIDS
• PHTHALATES
• UNITED KINGDOM

Subject Categories:

• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE