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Sun S.,Changchun University of Technology | Sun S.,Harbin Xinda Macromolecule Material Co. | Zhang F.,Changchun University of Technology | Fu Y.,Changchun University of Technology | And 2 more authors.
Journal of Macromolecular Science, Part B: Physics | Year: 2013

Glycidyl methacylate functionalized acrylonitrile-butadiene-styrene particles (ABS-g-GMA) prepared via an emulsion polymerization method were used to toughen poly(butylene terephthalate) (PBT)/bisphenol A polycarbonate (PC) blends. DMA results showed PBT was partially miscible with PC and the addition of ABS-g-GMA improved the miscibility between PBT and PC. DSC tests further testified that the introduction of ABS-g-GMA improved the miscibility of PBT and PC according to the Tm depression criterion. SEM displayed a very good dispersion of ABS-g-GMA particles in the PBT/PC blends and the dispersed phase size of PC decreased due to the compatibilization effect of ABS-g-GMA. The mechanical properties showed that the addition of 10 wt% ABS-g-GMA was sufficient to induce a super-tough fracture behavior to the PBT/PC blends and a notched impact strength of more than 1000J/m was achieved. The Vu-Khanh test showed that stable crack propagation took place for PBT/PC blends with the addition of ABS-g-GMA and led to ductile failure. © 2013 Copyright Taylor and Francis Group, LLC. Source


Sun S.,Harbin Xinda Macromolecule Material Co. | Sun S.,Changchun University of Technology | Tong Y.,Changchun University of Technology | Zou D.,Harbin Xinda Macromolecule Material Co. | And 2 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2011

Acrylonitrile-butadiene-styrene (ABS) was used to toughen poly(butylene terephthalate) (PBT) and polycarbonate (PC) blends. Dynamic mechanical thermal analysis (DMTA) test shows PBT and PC are thermodynamics immiscible. The addition of ABS makes the T g of PBT and PC shift together and improve the miscibility of PBT and PC. Differential scanning calorimetry (DSC) test indicats that the crystallization and melt temperature of PBT phase in the PBT/PC blends shift to lower temperature since the ABS introduction which inhibits the crystallization process of PBT. Scanning electron microscope (SEM) shows that ABS disperses in PBT/PC matrix uniformly and the addition of ABS makes the phase domain size of PC decrease. The toughness of PBT/PC blends is improved significantly by ABS. When the mass fraction of ABS is 10%, notched impact strength of 1300 J/m is achieved, showing the super-toughness. Source


Wang X.,Changchun University of Technology | Sun S.,Changchun University of Technology | Sun S.,Harbin Xinda Macromolecule Material Co. | Zou D.,Harbin Xinda Macromolecule Material Co. | And 2 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2012

Methyl methacrylate-butadiene-styrene-glycidyl methacrylate (MBS-g-GMA) core-shell particles were prepared to toughen polycarbonate (PC). The addition of poly(butylene terephthalate) (PBT) into the blends improves the dispersion of PC/MBS-g-GMA and MBS-g-GMA in PC matrix. The notched impact strength of the blends is improved, and when the mass fraction of PBT is 20%, impact strength of 700 J/m can be achieved. The melt flow rate of PC/MBS-g-GMA blends increases with the introduction of PBT and the processability is improved. The fracture morphology shows the size of stress-whitening zone increases due to the addition of PBT and the shear yielding becomes much obvious and the toughness of the blends is improved. Source

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