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5711754 
Journal Article 
Investigation of the properties of PBT/ABS-g-GMA blends modified with epoxy resin of mid-molecular weights 
Sun, S; Chen, Z; Tan, Z; Zhou, C; Zhang, M; Zhang, H 
2007 
Yes 
E-polymers
ISSN: 1618-7229 
European Polymer Federation 
English 
WOS:000251263900001 
Middle molecular weight epoxy resin was used to modify the properties of polybutylene terephthalate (PBT) and glycidyl methacrylate- functionalized acrylonitrile- butadiene- styrene (ABS-g-GMA) blends. Rheological tests showed that the complex viscosity and storage modulus of PBT increased with the addition of epoxy resin due to the chemical reactions. PBT displayed non-Newtanian fluid behaviour when epoxy resin content was 10wt% or higher. SEM results showed there was no obvious difference between the morphology of PBT/ABS-g-GMA blends when epoxy resin content was low, however, agglomeration of ABS phase took place when epoxy resin content was 10wt% or higher due to the complicated reactions. DSC results showed that the addition of epoxy resin to PBT/ ABS- g- GMA blends improved the compatibility according to T-m depression criterion and DMA test further testified the improved compatibility. Mechanical tests showed impact strength of 902J/ m and yield strength of 42MPa was achieved when 20wt% ABS- g- GMA and 5wt% epoxy resin were used, which displayed supper- toughness and much stiffer properties.