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Interphase control in poly(styrene‐ block ‐butadiene‐ block ‐styrene) copolymer/magnesium hydroxide composites
Author(s) -
Dumitru Paul,
Lees Graham C.,
Liauw Christopher M.,
Rothon Roger N.
Publication year - 2001
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200106)170:1<213::aid-masy213>3.0.co;2-e
Subject(s) - materials science , polybutadiene , magnesium , composite material , copolymer , styrene butadiene , polystyrene , filler (materials) , composite number , polymer , styrene , hydroxide , boehmite , chemical engineering , aluminium , metallurgy , engineering
The role of isostearic acid (ISA) and maleinised polybutadiene (MPBD) in the interphase control of SBS/magnesium hydroxide composites was investigated. Infrared studies showed that both ISA and MPBD interact chemically with the magnesium hydroxide. Flow microcalorimetry studies showed that model polymers that resemble the two phases of SBS (polybutadiene and polystyrene), were absorbed irreversibly on the surface of magnesium hydroxide. Differences in mechanical responses showed that filler surface modification with MPBD led to increased filler‐matrix adhesion compared to the composite based on untreated. ISA treatment of the filler led to reduced melt viscosities and filler‐matrix interaction, but resulted in higher levels of strain induced crystallization, relative to the composites based on untreated and MPBD treated magnesium hydroxide.