Reactive compatibilization of polyamide-12/poly(butylene terephthalate) blends with hyperbranched PEI-g-PA12: Morphology and thermal properties

Wang, Pingli; Meng, Kun; Cheng, He; Hong, Song; Hao, Jinkun; Han, Charles C.; Haeger, H.

doi:10.1016/j.polymer.2009.02.040

Cited by 16 publications

(13 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The extent of reaction was controlled by the diffusion of aPA, specifically, the number of amino endgroups at the interface. The hPEI which possesses many amino end-groups can react with carbonate groups of PC and also with amide groups of aPA [26] . The potential main reaction process in binary blend and ternary blends are shown in Scheme 1.…”

Section: Morphologiesmentioning

confidence: 99%

“…The potential main reaction process in binary blend and ternary blends are shown in Scheme 1. Taking into account of the low viscosity of hPEI as a rheological control agent [26] , a small amount of hPEI were considered as an effective compatibilizer in blends. Figures 2(c) and 2(d) showed the fracture morphologies of PC/aPA/hPEI (50/50/1) ternary blends before and after annealing at 180 C for 600 min, and the partial interaction between the polymers were observed; it did not present the well-separation of phases.…”

Section: Morphologiesmentioning

confidence: 99%

See 1 more Smart Citation

Influences of hyperbranched polyethylenimine on the reactive compatibilization of polycarbonate/polyamide blends

2015

Self Cite

View full text Add to dashboard Cite

The influences of hyperbranched polyethylenimine (hPEI), which possesses many reactive amino end-groups, on the blending properties of bisphenol-A polycarbonate (PC) and amorphous polyamide (aPA) were systematically investigated. Scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) were used to observe the effect of hPEI on morphologies of PC and aPA phases in bulk blends. While the interfacial fracture toughness between planar PC and aPA layers with and without hPEI was studied by using augmented double cantilever beam (ADCB) method. Results show that the compatibility in PC/aPA blends can be significantly improved by adding a small amount of hPEI, mainly due to the interchange reactions between the polymers leading to the formation of block copolymers, cross-linked polymers and molecules with other constitutions. The augmented double cantilever beam experiments showed that the reactive process drastically reinforced the interfacial adhesion between planar layers of PC and aPA. However, degradation takes place during annealing at 180 C, which was responsible for the production of small molar mass species of PC.

show abstract

Section: Morphologiesmentioning

confidence: 99%

Section: Morphologiesmentioning

confidence: 99%

Influences of hyperbranched polyethylenimine on the reactive compatibilization of polycarbonate/polyamide blends

2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…To our knowledge, PA6/PBT blends has rarely been used until recent years, owing to the poor compatibility between PA6 and PBT components, which would decrease the notched impact strength of blends, even inferior to those of pure PA6 or PBT . Therefore, it is imperative to toughen of PA6/PBT blends . Kim prepared the PA6/PBT/ethylene vinyl acetate grafting maleic anhydride (EVA‐ g ‐MAH) blends by direct injection molding and found that the impact strength increased in the presence of EVA‐ g ‐MAH.…”

Section: Introductionmentioning

confidence: 99%

Preparation of core-shell structured particle and its application in toughening PA6/PBT blends

Wang

et al. 2016

Polym. Adv. Technol.

View full text Add to dashboard Cite

Combining the excellent mechanical strengths of polyamide 6 (PA6) with the low water absorption of poly(butylene terephthalate) (PBT) was supposed to be a feasible way to prepare a high comprehensive performance material. However, the poor compatibility between PA6 and PBT resulted in low-notched impact strength of PA6/PBT blends. Poly(n-butyl acrylate)/poly(methyl methacrylate-co-methacrylic acid) (PBMMA), a core-shell structured modifier with controlled particle sizes, was prepared by seed emulsion polymerization and confirmed by Transmission electron microscope (TEM). The PBMMA particles as toughening modifier and compatilizer were employed to toughen PA6/PBT blends. The notched impact strength of the PA6/PBT blends was significantly increased and the water absorption was reduced with the addition of PBMMA particles. With 23.0 wt% modifier loading, the notched impact strength of the blends was 25.66 kJ/m 2 , which was 4.04 times higher than that of pure PA6/PBT. Meanwhile, the water absorption of the blends was only 1.3%, dropping 53.6% compared with pure PA6 and reducing by 26.6% than PA6/PBT. Scanning electron microscope results showed that the PBMMA particles were dispersed in the PA6/PBT blends homogeneously, and the toughening mechanism was the cavitation of rubber particles and shear yielding of the matrix. Thermo-gravimetric analysis analysis demonstrated that the compatibility between PA6 and PBT was improved with the addition of core-shell PBMMA particles. The core-shell particles could be used as an effective modifier to achieve the high toughness and low water absorption for PA6/PBT blends.

show abstract

“…Furthermore, Wang et al evaluated thermal and morphological properties of polyamid12=poly(butylene terephthalate)(PBT)blends with hyperbranched poly (ethylene imine)-g-polyamid12(PETg-PA12) as reactive CP. Eventually, they showed that the addition of PEI-g-PA12 can deeply change the morphology feature of PA12=PBT blends, which were originally an incompatible polymer pair [20] .…”

Section: Introductionmentioning

confidence: 99%

SEBS-g-MAH as a Reactive Compatibilizer Precursor for PP/PTT/SEBS Ternary Blends: Morphology and Mechanical Properties

Jazani

Ahmad

Jafari

et al. 2013

Polymer-Plastics Technology and Engineering

View full text Add to dashboard Cite

This article highlights the effect of using maleic anhydride-assisted SEBS compatibilizer precursor on the morphology and mechanical properties of the polypropylene (PP)/poly (trimethylene terephthalate) (PTT)/poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) 70/15/15 ternary blends. In all ternary blends, the amounts of PP and PTT, respectively as the matrix and the primary minor components were kept constant at 70 and 15 wt%; in turn, the amount of constituent polymers within the secondary minor phase containing reactive maleic anhydride grafted SEBS (SEBS-g-MAH) and nonreactive SEBS was changed. The mentioned compatibilizing system was first melt-blended in a co-rotating twin screw extruder and then added into the blend. Theoretical models were also employed to make a comparison with experimental values obtained from morphology characterization through the ternary systems. Accordingly, it is found that the blend containing only non-reactive SEBS exhibited fine dispersion of core-shell particles; however, by diminishing SEBS to SEBS-g-MAH weight ratio, the morphology changed from the pure core-shell to a multi-phase system consisting of both core-shell and detached particles. Eventually, this transition in the phase morphology caused some consequences and/ or advantages on the mechanical properties, so that the blend consisting of 50/50 weight ratio of SEBS/SEBS-g-MAH exhibited the minimum value of modulus; in contrast, the impact strength of that sample was considerably higher than that of neat PP specimen. These alterations in mechanical properties could be ascribed to the formation of some especial microstructures, in another word, the impact of particle size and particle size distribution, which has been well-established through scanning electron micrographs.

show abstract

Reactive compatibilization of polyamide-12/poly(butylene terephthalate) blends with hyperbranched PEI-g-PA12: Morphology and thermal properties

Cited by 16 publications

References 37 publications

Influences of hyperbranched polyethylenimine on the reactive compatibilization of polycarbonate/polyamide blends

Influences of hyperbranched polyethylenimine on the reactive compatibilization of polycarbonate/polyamide blends

Preparation of core-shell structured particle and its application in toughening PA6/PBT blends

SEBS-g-MAH as a Reactive Compatibilizer Precursor for PP/PTT/SEBS Ternary Blends: Morphology and Mechanical Properties

Contact Info

Product

Resources

About