Influence of epoxidized ethylene propylene diene rubber on nonisothermal crystallization kinetics and mechanical properties of poly(butylene terephthalate)/polypropylene blend
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Bo Liu
Abstract
The epoxidized ethylene propylene diene rubber (eEPDM) was successfully prepared by the epoxidation of ethylene propylene diene rubber (EPDM) using t-butyl hydroperoxide as the oxidant in association with molybdenum oxide as the catalyst and characterized by Fourier-transform infrared (FTIR) spectrometer and 1H-nuclear magnetic resonance analyses. Then the poly(butylene terephthalate) (PBT)/eEPDM/polypropylene (PP) blends with different eEPDM contents were prepared using a twin-screw extruder, and the effect of eEPDM on nonisothermal crystallization kinetics of PBT/PP blend was investigated by differential scanning calorimetry. Meanwhile, morphological features of samples were observed using scanning electron microscopy. Also, the mechanical properties of samples were evaluated. Analyses of the crystallization data by various macro-kinetic models like Jeziorny modified Avrami and Liu-Mo model demonstrated that PP as diluents accelerated the crystallization of PBT in PBT/PP. Moreover, the addition of eEPDM into PBT/PP further facilitated the crystallization of PBT in PBT/eEPDM/PP. The eEPDM was an effective crystallization promoter for PBT/PP blend. And the presence of eEPDM promoted the uniform dispersion of PP in PBT matrix. When the content of eEPDM was 5 phr, the PBT/eEPDM/PP exhibited the highest notched impact strength and Young’s modulus among all the specimens.
Acknowledgments
The authors gratefully acknowledge the Center of Material Research and Analysis in East China University of Science and Technology for supporting the testing of specimens. Also we express our gratitude to Sino-German Joint Research Center of Advanced Materials for supporting in the preparation of blends.
Conflict of interest statement: The authors declare that there is no conflict of interests.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Material properties
- Sorption capacities of chitosan/polyethylene oxide (PEO) electrospun nanofibers used to remove ibuprofen in water
- Influence of epoxidized ethylene propylene diene rubber on nonisothermal crystallization kinetics and mechanical properties of poly(butylene terephthalate)/polypropylene blend
- Polyaniline enfolded hybrid carbon array substrate electrode for high performance supercapacitors
- Neighboring group effect on the thermal degradation of polyacrylamide and its derivatives
- Rheology of poly(lactic acid)/poly(trimethylene terephthalate) blends compatibilized by clay or maleic anhydride-grafted poly(ethylene-octene) elastomer
- Preparation and assembly
- Preparation of particulate polyvinylidene fluoride membranes of different particle sizes for membrane distillation applications
- Evaluation of internal morphology and engineering properties of graphite-filled UHMWPE nanocomposites produced using a novel octa-screw kneading extruder
- Development of NIPAAm-PEG acrylate polymeric nanoparticles for co-delivery of paclitaxel with ellagic acid for the treatment of breast cancer
- Engineering and processing
- Stereocomplex formation in injection-molded poly(L-lactic acid)/poly(D-lactic acid) blends
- Chaotic mixing analysis of a novel single-screw extruder with a perturbation baffle by the finite-time Lyapunov exponent method
- Influence of talc and rubber contents on surface replication of polypropylene injection molding application to automotive plastics
Artikel in diesem Heft
- Frontmatter
- Material properties
- Sorption capacities of chitosan/polyethylene oxide (PEO) electrospun nanofibers used to remove ibuprofen in water
- Influence of epoxidized ethylene propylene diene rubber on nonisothermal crystallization kinetics and mechanical properties of poly(butylene terephthalate)/polypropylene blend
- Polyaniline enfolded hybrid carbon array substrate electrode for high performance supercapacitors
- Neighboring group effect on the thermal degradation of polyacrylamide and its derivatives
- Rheology of poly(lactic acid)/poly(trimethylene terephthalate) blends compatibilized by clay or maleic anhydride-grafted poly(ethylene-octene) elastomer
- Preparation and assembly
- Preparation of particulate polyvinylidene fluoride membranes of different particle sizes for membrane distillation applications
- Evaluation of internal morphology and engineering properties of graphite-filled UHMWPE nanocomposites produced using a novel octa-screw kneading extruder
- Development of NIPAAm-PEG acrylate polymeric nanoparticles for co-delivery of paclitaxel with ellagic acid for the treatment of breast cancer
- Engineering and processing
- Stereocomplex formation in injection-molded poly(L-lactic acid)/poly(D-lactic acid) blends
- Chaotic mixing analysis of a novel single-screw extruder with a perturbation baffle by the finite-time Lyapunov exponent method
- Influence of talc and rubber contents on surface replication of polypropylene injection molding application to automotive plastics
