Rheological and morphological behaviour of blends of polycarbonate with unmodified and maleic anhydride grafted ABS
TL;DR: In this article, a mixture of polycarbonate (PC) and maleic anhydride grafted ABS (MABS) was prepared by melt blending, using a single-screw extruder with a special mixing head over the whole range of compositions.
About: This article is published in Polymer.The article was published on 1998-11-01. It has received 53 citations till now. The article focuses on the topics: Maleic anhydride.
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TL;DR: In this article, the grafting of maleic anhydride onto ABS was considered a key factor, which resulted in a special morphology of ABS domains dispersed in polycarbonate matrix.
80 citations
TL;DR: ABS- g -MAH (maleic anhydride) with different grafting degree, ABS/OMT (organo montmorillonite) and ABS- g-MAH/OMTs were prepared via melt blending as mentioned in this paper.
69 citations
TL;DR: In this article, the effects of a compatibilizer on polypropylene (PP)/poly(acrylonitrile-butadiene-styrene) (ABS) blends were studied using a twin screw extruder.
Abstract: The effects of a compatibilizer on polypropylene (PP)/poly(acrylonitrile-butadiene-styrene) (ABS) blends were studied Blends of the PP/ABS, with PP-g-SAN copolymer as a compatibilizer, were prepared using a twin screw extruder The flexural and impact strength of the PP/ABS blends with the PP-g-SAN copolymer increased significantly with PP-rich compositions on the addition of the PP-g-SAN copolymer at 3 phr The increase in the mechanical properties of the PP/ABS/PP-g-SAN blend may have been due to the toughening effects of the ABS in the PP-rich compositions In the morphology study of the PP/ABS/PP-g-SAN (80/20) blend with the PP-g-SAN copolymer, the minimum droplet size, 51 μm, was observed with the addition of 3 phr of the PP-g-SAN copolymer The complex viscosity of the PP/ABS/PP-g-SAN (80/20) blends increased with the addition of 3 phr of the PPg-SAN copolymer From the above mechanical properties, morphology and complex viscosity results for the PP/ ABS blends, it is suggested that the compatibility is more increased with the PP-rich composition (PP:ABS = 80/ 20 wt%) of the PP/ABS blend on the addition of 3 phr of the PP-g-SAN copolymer
45 citations
TL;DR: In this paper, a co-rotating twin-screw extruder was used for blending of recycled polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS) and some mechanical and morphological properties were investigated.
Abstract: Blends of recycled polycarbonate (PC) and acrylonitrile–butadiene–styrene (ABS) were prepared and some mechanical and morphological properties were investigated. To compatibilize these blends, ABS-g-(maleic anhydride) (ABS-g-MA) and (ethylene–vinyl acetate)-g-(maleic anhydride) (EVA-g-MA) with similar degree of grafting of 1.5% were used. To compare the effect of the type of compatibilizer on mechanical properties, blends were prepared using 3, 5 and 10 phr of each compatibilizer. A co-rotating twin-screw extruder was used for blending. The results showed that ABS-g-MA had no significant effect on the tensile strength of the blends while EVA-g-MA decreased the tensile strength, the maximum decrease being about 9.6% when using 10 phr of this compatibilizer. The results of notched Charpy impact strength tests showed that EVA-g-MA increased the impact strength of blends more than ABS-g-MA. The maximum value of this increase occurred when using 5 phr of each compatibilizer, it being about 54% for ABS-g-MA and 165% for EVA-g-MA. Scanning electron microscopy micrographs showed that the particle size of the dispersed phase was decreased in the continuous phase of PC by using the compatibilizers. Moreover, a blend without compatibilizer showed brittle behaviour while the blends containing compatibilizer showed ductile behaviour in fracture. © 2013 Society of Chemical Industry
44 citations
TL;DR: In this paper, the effects of maleic anhydride-grafted polypropylene (PP-g-MAH) addition on poly(acrylonitrile-butadiene-styrene) (ABS) blends were studied.
Abstract: The effects of maleic anhydride-grafted polypropylene (PP-g-MAH) addition on polypropylene (PP) and poly(acrylonitrile-butadiene-styrene) (ABS) blends were studied. Blends of PP/ABS (70/30, wt%) with PP-g-MAH were prepared by a twin-screw extruder. From the results of mechanical testing, the impact, tensile and flexural strengths of the blends were maximized at a PP-g-MAH content 3 phr. The increased mechanical strength of the blends with the PP-g-MAH addition was attributed to the compatibilizing effect of the PP and ABS blends. In the morphological studies, the droplet size of ABS was minimized (6.6 μm) at a PP-g-MAH content of 3 phr. From the rheological examination, the complex viscosity was maximized at a PP-g-MAH content of 3 phr. These mechanical, morphological and rheological results indicated that the compatibility of the PP/ABS (70/30) blends is increased with PP-g-MAH addition to an optimum blend at a PP-g-MAH content of 3 phr.
41 citations
References
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01 Jan 1980
492 citations
TL;DR: In this article, the phase morphology of blends of nylons with polyethylenes and polystyrenes is investigated and the effects of compatibilizing agents are discussed.
Abstract: Investigations of instability of phase morphology of blends of nylons with polyethylenes and polystyrenes and the effects of “compatibilizing” additives or “agents” are described. Annealing coarsens the phase morphology of blends of nylons with polyethylenes and polystyrenes. Phase growth is observed for various periods of annealing time. The addition of compatibilizing agents, specifically maleic anhydride grafted polyolefins to polyethylene-nylon blends and syrene-maleic anhydride copolymers to polystyrene-nylon blends, stabilize the phase dimensions. Styene-maleic anhydride copolymer is found more effective than styrene acrylonitrile copolymer as a compatibilizing agent. The mechanisms of this behavior are critically discussed.
124 citations
ARCO1
TL;DR: In this paper, the authors used dynamic mechanical analysis to detect the presence of interzones existing between the polybutylene terephthalate (PBT) matrix and the EPR random copolymer.
80 citations
ARCO1
TL;DR: In this paper, a Brabender-like apparatus and compression molded in sheets was used for the preparation of PC/ABS blends, encompassing the whole composition range between PC and ABS, and two very different mechanical tests were performed: (a) tensile stress-strain on unnotched specimens at a very low deformation rate, showing a decreased PC ductility in blends with ABS additions; and (b) flexural impact tests (Charpy mode), where a strong synergistic effect was detected in a restricted composition range (20-30% ABS).
Abstract: PC/ABS blends, encompassing the whole composition range between PC and ABS, were prepared by a Brabender-like apparatus and compression molded in sheets. The analysis of processability, confirming the improved PC processability by ABS additions, was accomplished by the same apparatus used for the blend preparation. A DSC investigation confirmed the inward Tg shift found by other authors. Two very different mechanical tests were performed: (a) tensile stress–strain on unnotched specimens at a very low deformation rate, showing a decreased PC ductility in blends with ABS additions; and (b) flexural impact tests (Charpy mode) on sharply notched specimens at a very high deformation rate, where a strong synergistic effect was detected in a restricted composition range (20–30% ABS). A comparison of the experimental data of the Young's modulus versus blend composition with the Kerner's model predictions confirmed the good adhesion existing between PC and ABS domains. The results were interpreted on the hypothesis of interlayer zones existing at the PC/ABS boundary. © 1994 John Wiley & Sons, Inc.
72 citations
ARCO1
TL;DR: The articles here presented and discussed offer an almost exhaustive survey of the work done until now on these commercial materials, particularly with respect to the phase compatibility.
Abstract: A literature review concerning PC/ABS alloys is presented with the aim of providing a background suitable for a systematic investigation on the properties of such materials undertaken in our Institute. This is preceded by an additional survey on PC/SAN alloys. The purpose was to extend the above-mentioned background furnishing literature information available on these systems (having two components out of three in common with PC/ABS alloys), particularly with respect to the phase compatibility. The articles here presented and discussed offer an almost exhaustive survey of the work done until now on these commercial materials. © 1994 John Wiley & Sons, Inc.
67 citations