Binary alloys of nylon 6 and ethylene‐methacrylic acid copolymers: Morphological, thermal and mechanical analysis

MacKnight, William J.; Lenz, Robert W.; Musto, Pellegrino; Somani, Rizwan

doi:10.1002/pen.760251803

Cited by 111 publications

(45 citation statements)

References 10 publications

(1 reference statement)

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“…1 7 Another is the possibility of chemical reactions between the amine end groups of PA6 and the carboxylic acid of SAA during melt mixing. In a study on the binary blends of PA6 and EMAA, MacKnight et al 18 suggest that graft copolymers are formed between two phases as a result of chemical reactions taking place during melt mixing. Such graft copolymers can act as an effective compatibilizer for the blend.…”

Section: Morphologymentioning

confidence: 99%

Morphological, Rheological, and Mechanical Properties of Polyamide 6/Styrene-Acrylic Acid Copolymer Blends

Kim

Chae

1993

Polym J

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ABSTRACT:The morphology, rheological and tensile properties of polyamide 6 (PA6)/poIy(styrene-co-acrylic acid) (SAA) blends were examined as a function of the acrylic acid (AA) content in SAA. It was found that the AA unit in copolymers has a pronounced effect upon the morphology of the blends. The dispersed phase size was significantly reduced with increasing AA content in SAA. A reduction in the particle size of the dispersed phase resulted in improvement in tensile properties of the blends.KEY WORDS Morphology / Rheological Properties / Tensile Properties / Polyamide 6 / Poly(styrene-co-acrylic acid) / Domain Size / Chemical Reaction / Long Branching / Polystyrene (PS) and polyamide 6 (P A6) are two important classes of polymers. PS is widely used as an injection molding and vacuum forming material due to low cost, good mold ability, low moisture absorption, good dimensional stability, good electrical insulation properties, and colorability. The principal limitations of PS, however, are its brittleness, inability to withstand the temperature of boiling water and mediocre oil resistance. PA6 is an engineering thermoplastic material. It finds many applications in eletrical, mechanical, and automotive parts due to its very high strength, wear and heat resistance, ease of fabrication, and excellent barrier properties to oils. However, it has not become a commodity plastic material because of its relatively high cost. Therefore it is desirable to compromise properties and cost by blending PS and PA6.It is often difficult to obtain good dispersion in polymer blends whose components are essentially insoluble in each other, particularly for blends of a polar polymer such as P A6 with a nonpolar polymer such as PS. Several authors l -9 have reported that the presence of a block or graft copolymer of appropriate chemical structure provides lowering of the interfacial energy and an improvement of the interfacial adhesion between the two phases. The final morphological effect is reduction in particle size of the dispersed phase in the blend. For example, in the case of polystyrene (PS)/polyethylene (PE) blends, Heikens et al. 7 observed that the dimensions of the PE domains decreased with the addition of PSco-PE graft and block coplymers. Recently attempts were made to compatibilize immiscible polymer pairs by introducing a specific interaction between constituents of individual polymer chains. It has been reported that copolymers of methyl methacrylate and 4-vinylpyridine were miscible poly(butyl acrylate-eo-acrylic acid) through specific interaction.loIn this work, acrylic acid (AA) was introduced into PS to enhance the compatibility of PA6 and PS blend, and the morphology, rheological and tensile properties of P A6/SAA blends were examined as 1023

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Section: Morphologymentioning

confidence: 99%

Morphological, Rheological, and Mechanical Properties of Polyamide 6/Styrene-Acrylic Acid Copolymer Blends

Kim

Chae

1993

Polym J

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“…Blending was mostly on polymer blends between nylon and polyaccomplished with a co-rotating twin-screw exolefins functionalized with maleic anhydride or truder operating at a constant speed of 100 rpm; acrylic acid, [5][6][7][8][9][10] with only a few studies on other the melt temperature was at 250ЊC. For ternary systems.…”

Section: Introductionmentioning

confidence: 99%

Morphological, thermal, and mechanical properties of polypropylene/polycarbonate blend

Zhang

Zhang³

et al. 1997

J. Appl. Polym. Sci.

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This work deals with the effect of compatibilizer on the morphological, thermal, rheological, and mechanical properties of polypropylene/polycarbonate (PP/ PC) blends. The blends, containing between 0 to 30 vol % of polycarbonate and a compatibilizer, were prepared by means of a twin-screw extruder. The compatibilizer was produced by grafting glycidyl methacrylate (GMA) onto polypropylene in the molten state. Blend morphologies were controlled by adding PP-g-GMA as compatibilizer during melt processing, thus changing dispersion and interfacial adhesion of the polycarbonate phase. With PP-g-GMA, volume fractions increased from 2.5 to 20, and much finer dispersions of discrete polycarbonate phase with average domain sizes decreased from 35 to 3 mm were obtained. The WAXD spectra showed that the crystal structure of neat PP was different from that in blends. The DSC results suggested that the degree of crystallization of PP in blends decreased as PC content and compatibilizer increased. The mechanical properties significantly changed after addition of PP-g-GMA.

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“…The mixture is then stirred for 6 h. at 40 C using a magnetic stirrer. P(3HB) and P(3HB)/starch films of 0.3 mm in thickness were prepared by solution casting in Petri dishes and allowed to dry slowly at 30 C in a vacuum dissecator. Sheets were then cut into small pieces and used for degradation and characterization studies.…”

Section: Materials and Films Preparationmentioning

confidence: 99%

Water resistance, mechanical properties, and biodegradability of poly(3‐hydroxybutyrate)/starch composites

Ismail

Gamal

2009

J of Applied Polymer Sci

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Composites of poly(3-hydroxybutyrate), P(3HB), and starch were prepared by solution casting technique. To improve adhesion of starch to P(3HB), stearic acid was added as a compatibilizer and glycerol as a plasticizer. The water resistance, mechanical, and biodegradable properties of the P(3HB)/starch composites were studied. Diffusion and penetration coefficients of water increased with increasing starch content in the composites. The results showed that the elastic modulus and strain at rupture of the P(3HB)/starch composites were enhanced by increasing starch content upto 10 wt % and the tensile strength increased from 21.2 to 93.9 MPa. The presence of starch content higher than 10 wt % had an adverse effect on the mechanical properties of the investigated composites. The biodegradation rate using Actinomycetes increased proportionally to the starch content in the composite and accelerated in a culture medium of pH % 7.0 at 30 C. Enzymatic degradation experiments showed that lipase produced by Streptomyces albidoflavus didnot degrade P(3HB)/starch composites.

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Binary alloys of nylon 6 and ethylene‐methacrylic acid copolymers: Morphological, thermal and mechanical analysis

Cited by 111 publications

References 10 publications

Morphological, Rheological, and Mechanical Properties of Polyamide 6/Styrene-Acrylic Acid Copolymer Blends

Morphological, Rheological, and Mechanical Properties of Polyamide 6/Styrene-Acrylic Acid Copolymer Blends

Morphological, thermal, and mechanical properties of polypropylene/polycarbonate blend

Water resistance, mechanical properties, and biodegradability of poly(3‐hydroxybutyrate)/starch composites

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