運用共聚高分子強化高分子界面
Date Issued
2003-10-31
Date
2003-10-31
Author(s)
DOI
912216E002015
Abstract
We have measured the fracture toughness of interface between polystyrene
(PS)/poly methyl methacrylate (PMMA) using mixed composition of different
random copolymers of PSf-r-PMMA1-f, where f is the volume fraction of PS in the
random copolymer. Nine different composition of PS-PMMA were used with f
ranging from 0.1 to 0.9. We have found the fracture toughness of interface can be
significantly increased with mixed random copolymer compared with that from the
copolymer of single composition. It is found that with increasing concentration of the
mixed random copolymer at the interface, the Gc of the interface increase quickly and
finally reaches a plateau. The failure mechanism is examined by ATR-FTIR technique.
With thick random copolymers layer at the interface, we found that beside the
homopolymer PS crazes, the thick random copolymer itself also crazes. This method
suggests a simple method for one to effectively use random copolymers for reinforcement.
Publisher
臺北市：國立臺灣大學化學工程學系暨研究所
Type
report
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