Accession Number:

ADA151309

Title:

Thermal and Mechanical Behavior of Polycarbonate-Poly(Ethylene Terephthalate) Blends,

Descriptive Note:

Corporate Author:

TEXAS UNIV AT AUSTIN

Personal Author(s):

• Murff, S. R.
• Barlow, J. W.
• Paul, D. R.

Report Date:

1984-01-01

Pagination or Media Count:

11.0

Abstract:

Melt blends of polycarbonate and polyethylene terephthalate were formed by continuous extrusion and injection-molded into bars for mechanical testing. Thermal analysis was used to ascertain transitional behavior and the level of PET crystallinity at various points in the fabrication and testing process. The mechanical properties showed little departure from additivity except for the percent elongation at break which was substantially larger for certain blends than expected. Glass transition behavior suggest two amorphous phases for PC rich mixtures and only one mixed phase in the PET rich region. Crystallizability of the PET after the blend was held or prolonged times in the melt stage suggests that interchange reactions do not occur to any great extent. Originator supplied key words include Polyethylene terephthalatePET, PCPolycarbonate, Polyester, Blends, Thermal Analysis, Miscibility, Interchange Reactions, Reprints.

Descriptors:

• *POLYCARBONATES
• *POLYETHYLENE TEREPHTHALATE
• CRYSTALLIZATION
• MECHANICAL PROPERTIES
• MELTS
• MIXTURES
• REPRINTS
• SOLUBILITY
• THERMAL ANALYSIS
• TRANSITION TEMPERATURE

Subject Categories:

• Plastics
• Mechanics
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE