Accession Number:

AD0255706

Title:

GROWTH OF CRYSTALS IN ORIENTED AMORPHOUS POLYETHYLENE

Descriptive Note:

Technical rept.

Corporate Author:

MASSACHUSETTS UNIV AMHERST

Personal Author(s):

• JUDGE,JANE T.
• STEIN,RICHARD S.

Report Date:

1961-04-15

Pagination or Media Count:

1.0

Abstract:

The growth of crystals from the melt in oriented crosslinked polyethylene was studied by X-ray diffraction and birefringence as a function of orientation. It was found that for samples elongated more than about 200, the crystals grow with their c-axes parallel to the stretching direction. At elongations less than 200, there is a rather abrupt transition to a mode of growth in which the b-axis is perpendicular to the stretching direction with a tendency for the a-axis to be aligned parallel to this direction. Author

Descriptors:

• *CRYSTAL STRUCTURE
• *CRYSTALLIZATION
• *ETHYLENES
• *POLYMERS
• COOLING
• CRYSTAL LATTICES
• CRYSTALS
• GROWTH(PHYSIOLOGY)
• HEAT TREATMENT
• HEATING
• MOLECULAR STRUCTURE
• NUCLEATION
• PLASTICS
• REFRACTIVE INDEX
• X RAY DIFFRACTION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE