Polyamide polyethylene

Dispersingagents, such as polyethylene polyamide succinimides or methacrylate-type copolymers, are added to motor oils to disperse low-temperature sludge formed in spark-ignition engines. 

BiaxiaHy oriented films have excellent tensile strength properties and good tear and impact properties. They are especially well regarded for their brilliance and clarity. Essentially all poly(ethylene terephthalate) film is biaxiaHy oriented, and more than 80% of polypropylene film is biaxiaHy oriented. Polystyrene film is oriented, and a lesser amount of polyethylene, polyamide, poly(vinyl chloride), and other polymers are so processed. Some of the specialty films, like polyimides (qv), are also oriented. 

Available Forms. Phthalocyanines are available as powders, in paste, or Hquid forms. They can be dispersed in various media suitable for aqueous, nonaqueous, or multipurpose systems, eg, polyethylene, polyamide, or nitrocellulose. Inert materials like clay, barium sulfate, calcium carbonates, or aluminum hydrate are the most common soHd extenders. Predispersed concentrates of the pigments, like flushes, are interesting for manufacturers of paints and inks (156), who do not own grinding or dispersing equipment. Pigment—water pastes, ie, presscakes, containing 50—75% weight of water, are also available. 

Copolymer of styrene and acrylonitrile Copolymer of styrene and butadiene Natural rubber Chlorinated polyethylene Chlorosulfonated polyethylene Polyamides Polyesters Polyurethanes Polysulfones Polyacrylates Polyacrylamides Polydimethylsiloxane Copolymer of vinylidene fluoride and hexafluoropropylene... 

The addition of a copolymer has been shown to be a method of improving the mechanical properties of polyethylene/polyamide blends. One copolymer which has had particular success is poly(ethylene-co-methacrylic acid) (EMA) where the acid groups are partially neutralized by metal ions (EMA-salt). 

Crystallinity In contrast to amorphous, the existence of crystalline parts in polymer structures (e.g., polyethylene, polyamides). 

The development of plastics also reflects economic history. Restrictions on imported latex, wool, silk and other natural materials to Europe during the Second World War resulted in the rapid development of alternative synthetic plastics. Table 1 shows that between 1935 and 1945, many new polymers were introduced including polyethylene, polyamides, poly(methyl methacrylate), polyurethanes, poly(vinyl chloride) (PVC), silicones, epoxies, polytetrafluoro-ethylene and polystyrene. Polyethylene was incorporated into radar systems while PVC replaced the limited stocks of natural rubber as cable insulation. 

U.S. Pat. No. 6,942,829 [72] discloses a method of forming a polymer-wood composite material comprising 20-80% by weight of cellulose filler such as hardwood fiber, softwood fiber, hemp, jute, rice hulls, and wheat straw, 20-80% of a thermoplastic polymer such as polypropylene, polyethylene, polyamides, polyesters, and other polymers, 0.1-10% of a blend of a nonionic compatibilizer and a lubricant. 

XAD resins. Cl 8, polyethylene, polyamide) or polar solvent extraction (BuOH, amylalcohol, etc)... 

Polyethylene/polyamide-11 blend was compatibilized by radical copolymerization using diverse organic peroxides. The best performing material was obtained using co-rotating fully intermeshing machine. Lambla and Seadan, 1993... 

Polyethylene-Polyamide Blends with Compatibilizing Agents... 

Because the free radical initiated graft reaction can also lead to the cross-linking of polyethylene, copolymers of ethylene and with acrylic acid (184,185), glycidyl methacrylate (184,186), methacrylic acid and 10-undecenoic acid (187-189) were synthesized to compatibilize polyethylene/polyamide blends. The poly (ethylene-co-methacrylic acid) ionomers neutralized by sodium (184) and zinc (45,118,190-192) has also used as compatibilizers. High energy irradiation, used to modify the surface of fibers or films at beginning, was also used to compatibilize the polyethylene/polyamide blends (193-196). 

Dispersing agents, such as 1 polyethylene polyamide succ-... 

Aromatic hydrocarbons are used as diluents in solutions of cellulose nitrate, cellulose esters, and ethers with true solvents such as esters and ketones. Rubber, polyisobutene, and molten polyethylene also dissolve in them. Poly(vinyl chloride), solid polyethylene, polyamides, and shellac are, however, insoluble or only swell. 

F. Xiang, Y. Shi, X. Li, T. Huang, C. Chen, Y. Peng, Y. Wang, Cocontinuous morphology of immiscible high density polyethylene/polyamide 6 blend induced by multiwalled carbon nanotubes network. Eur. Polymer J. 48, 350-361 (2012)... 

F.P. La Mantia, P. Fontana, M. Moneale, M.C. Mistietta, Orientation induced brittle-ductile transition in a polyethylene/polyamide 6 blend. Polym. Testing 36, 20-23 (2014)... 

S.-J. liu, W.-R. Lin, K.-Y. Lin, Morphological development in water assisted injection molded polyethylene/polyamide-6 blends. Polym. Adv. Technol. 22, 2062-2068 (2011)... 

M.E. Cordova, A.T. Lorenzo, A.J. Miillta-, L. Gani, S. Tence-Girault, L. Leibler, The influenee of blend morphology (co-continuous or sub-micrometer droplets dispersions) on the nucleation and crystallization kinetics of double crystalline polyethylene/polyamide blends prepared by reactive extrusion. Macromol. Chem. Phys. 212, 1335-1350 (2011)... 

Light intensities at the moments of mistaking and then complete loss of the marks (7i and h, respectively) as well as the lowest intensity measured during the test procedure (/n in) were determined for a series of polymers (polyethylene, polyamide 6 and 12, poly(methyl methacrylate), polystyrene, PVC, and natural rubber). The observed intensity ranges are illustrated in Table 4.4. 

Acrylonitrile Butadiene Styrene Acrylonitrile Styrene Acrylate Cyclic Olefin Copolymer Polyethylene Chlorotrifluoroethylene Polyethylene Tetrafluoroethylene Ethylene Vinyl Acetate Fluorinated Ethylene Propylene High Density Polyethylene High Performance Polyamide Liquid Crystalline Polymer Low Density Polyethylene Linear Low Density Polyethylene Medium Density Polyethylene Polyamide (Nylon)... 

The first serious investigations of the breakup of drops of polymer solutions were by Chin and Han [82], who were concerned with the influence of viscoelasticity. Subsequent studies of the breakup of droplets of polymer solutions in liquid fluid matrix were by Elmendorp [52]. Some discrepancies with Tomotika s theory were found and filaments seem generally more stable. Elmendorp also considered experiments with molten polymer filaments in a polymer matrix. Specifically, he looked at the systems (polyethylene)/(polystyrene), (polyethylene)/(polypropylene), and (polyethylene)/(polyamide-6). The filaments exhibited breakup characteristics in agreement with Tomotika s theory (Figure 6.6). 

Min et al. [91] found in a study of blends of polyethylene/polyamide-6 that the interfadal tension seemed to have a greater effed than the viscosity ratio on phase morphology. They found that the lower the interfadal tension, the finer is the morphology achieved. They suggest the role oiK/rjay (or its inverse) as a correlation parameter. (Compare Eq. (6.28-6.30).)... 

Figure 6.27 Morphology development of polyethylene/polyamide-6/SEBS-g-MA reactive blends system in an intermeshing co-rotating twin-screw extruder [74].

Hot-gas welding can be used to join most thermoplastics including polypropylene, polyethylene, acrylonitrile butadiene styrene, polyvinyl chloride, thermoplastic polyurethane, high-density polyethylene, polyamide, polycarbonate, and polymethylmethacrylate. For polyolefins and other plastics that are easily oxidized, the heated gas must be inert (e.g., nitrogen or argon) because hot air will oxidize the surface of the plastic. 

Movement has even been shown to occur in the 1 to 4.2 K range in polyethylene, polyamide, polyethylene terephthalate, and fluori-nated hydrocarbons. ... 

Tetramethyl piperidines were first identified as potent traps for free radicals in the 1960s and the first generation of HAS was commercialized in the 1970s as effective light stabilizers for polyethylene, polyamides, and acrylics. But the mechanism by which HAS act to stabilize polymer radicals is still not entirely clear. 

It should be noted that during the implantation of low-energy ions (e.g., 100-keV B ) in polyethylene, polyamide, and some other polymers, the carbon enrichment turns out to be maximal at some depth below the surface of the irradiated target, which is evidenced by the depth profile of carbon excess in the implanted layer reconstructed from RBS spectra. In this case the oxygen depth profile is, generally, saddle shaped, because the additional maximum of oxygen concentration... 

Dencheva N, Oliveira M J, Carneiro O S, Pouzada A S and Denchev Z (2010) Preparation, structural development, and mechanical properties of microfibrillar composite materials based on polyethylene/polyamide 6 oriented blends, J Appl Polym Sci 115 2918-2939. 

Dencheva N, Denchev Z and Oliveira M J (2010) Microstructure studies of in situ composites based on polyethylene/polyamide 12 blends, Macromolecules 43 4715-4726. 

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