Deformation of poly(methyl methacrylate)-poly(ethylene oxide) blends: a molecular characterization by small-angle neutron scattering

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5601584

Lefebvre, J M.R.; Porter, S; Wignall, G D

The deformation behavior of miscible amorphous/amorphous PMMA/PEO blends has been compared to that of pure PMMA. Small-angle neutron scattering experiments have been performed on labeled systems made of PEO + D-PMMA + H-PMMA. Characteristic molecular parameters such as radius of gyration R/sub g/, molecular weight M/sub w/ and interaction parameter X have been extracted from the coherent scattering cross sections. Molecular anisotropy is measured on the solid state coextruded samples and the observed drawing efficiency is compared to the results of shrinkage tests. In the case of PMMA/PEO blends, anomalous scattering behavior precludes any quantitative interpretation of the scattering patterns, but revealed important structural changes upon drawing, namely a deformation-induced phase separation.

• Research Organization: Massachusetts Univ., Amherst (USA). Dept. of Polymer Science and Engineering; Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5601584
• Report Number(s): CONF-8604190-1; ON: DE86010024
• Resource Relation: Conference: Polyblends '86, Montreal, Canada, 1 Apr 1986; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PMMA
DEFORMATION
NEUTRON DIFFRACTION
POLYETHYLENE GLYCOLS
MIXTURES
SMALL ANGLE SCATTERING
ALCOHOLS
COHERENT SCATTERING
DIFFRACTION
DISPERSIONS
ESTERS
GLYCOLS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYACRYLATES
POLYMERS
POLYVINYLS
SCATTERING
360403* - Materials- Polymers & Plastics- Mechanical Properties- (-1987)