Accession Number:

ADA056726

Title:

Homogeneous and Heterogeneous Blends of Polybutadiene, Polyisoprene and Corresponding Diblock Copolymers.

Descriptive Note:

Technical rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING

Personal Author(s):

• Cohen,R. E.
• Ramos,A. R.

Report Date:

1978-07-06

Pagination or Media Count:

24.0

Abstract:

The miscibility of homogeneous diblock copolymers of 1-4-polybutadiene and cis-1-4 polyisoprene with either or both of the corresponding linear homopolymers was found to depend upon the relative lengths of the block segments and upon the coordinates of the binary or ternary mixture on the appropriate triangular composition diagram. Evidence from a variety of experiments was used to draw overall conclusions regarding the location of the diblock in these blends and its influence on physical properties.

Descriptors:

• *COPOLYMERS
• *POLYBUTADIENE
• *BLOCK POLYMERS
• *ISOPRENE
• MECHANICAL PROPERTIES
• COMPATIBILITY
• MIXTURES
• HETEROGENEITY
• DYNAMIC TESTS
• HOMOGENEITY

Subject Categories:

• Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE