Compatibilization of Ionomeric Polyblends by Intermolecular Ionic Interactions

1999 ◽  
Vol 72 (2) ◽  
pp. 449-463 ◽  
Author(s):  
Prince Antony ◽  
S. K. De
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Thermal Analyses ◽  
Thermoplastic Elastomers ◽  
Zinc Salt ◽  
Ionic Interactions ◽  
Melt Blending ◽  
Temperature Transition ◽  
Ionic Clusters ◽  
Poly Ethylene

Abstract Ionomeric polyblends based on the zinc salt of carboxylated nitrile rubber, abbreviated as Zn-XNBR, and the zinc salt of poly(ethylene-co-methacrylic acid), abbreviated as Zn-EMA, were prepared by melt blending technique. Zn-XNBR/Zn-EMA ionomeric polyblends, in the compositions ranging from 90/10 to 50/50, parts by weight, behave as ionic thermoplastic elastomers, and show synergism in physical properties. The synergism in physical properties is attributed to the formation of a technologically compatible polyblend, wherein intermolecular ionic interactions between the neat ionomers take part in the compatibilization mechanism. Dynamic mechanical thermal analyses show a high temperature transition, owing to the presence of ionic clusters in the neat ionomers and the ionomeric polyblends. The ionomeric polyblend exhibits higher physical properties and melt viscosity than the corresponding non-ionomeric polyblend.

New Thermoplastic Elastomers. Styrene Grafts on Lithiated Polydienes and Their Hydrogenated Counterparts

1973 ◽  
Vol 46 (4) ◽  
pp. 1044-1054 ◽  
Author(s):  
J. C. Falk ◽  
R. J. Schlott ◽  
D. F. Hoeg ◽  
J. F. Pendleton
Keyword(s):  
Molecular Weight ◽  
Physical Properties ◽  
Room Temperature ◽  
Graft Copolymers ◽  
Gel Permeation Chromatography ◽  
Thermoplastic Elastomers ◽  
Proper Choice ◽  
Melt Flow ◽  
Gel Permeation ◽  
Poly Ethylene

Abstract Metalation of diene polymers such as poly (butadiene) and poly(isoprene) with sec-butyllithium and tetramethylethylenediamine in cyclohexane at room temperature forms lithiated polydienes. Reaction of the polylithiodienes with styrene or α-methylstyrene forms graft copolymers. The extent of metalation is much greater than previously reported metalations with n-butyllithium and tetramethylethylenediamine. The grafting efficiencies, determined by acetone extraction and gel permeation chromatography, are greater than 95 per cent. Graft copolymers of poly (styrene) on EPDM rubbers may also be prepared using this technique. The physical properties of the graft copolymers are a function of molecular weight, graft site level, and composition. Products at specific compositions and graft levels are thermoplastic elastomers. Their properties are comparable to SBS rubbers, and offer as an advantage high melt flow. Graft copolymers of poly(styrene) on poly(ethylene) and poly(ethylene-co-butene-1) result from the hydrogenation of the butadiene moeities of graft copolymers of poly (styrene) on 1,4-poly(butadiene) and 1,2 and 1,4-butadiene copolymers, respectively. Complete hydrogenation results in graft copolymers of poly(vinylcyclohexane) on poly(ethylene) and on poly(ethylene-co-butene-1). In both of these cases thermoplastic elastomers result if the proper choice of composition and graft level is made.

scholarly journals Synthesis, Characterization and Non-Isothermal Crystallization Kinetics of a New Family of Poly (Ether-Block-Amide)s Based on Nylon 10T/10I

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 72
Author(s):  
Xin Tong ◽  
Zhao Wang ◽  
Mei-Ling Zhang ◽  
Xiao-Jun Wang ◽  
Gang Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
Thermoplastic Elastomers ◽  
Bending Test ◽  
One Pot ◽  
Isothermal Crystallization Kinetics ◽  
New Family ◽  
Poly Ethylene ◽  
Kinetics Of

A series of novel thermoplastic elastomers based on (poly(decamethylene terephthalamide/decamethylene isophthalamide), PA10T/10I) and poly(ethylene glycol) (PEG) were synthesized via a facile one-pot, efficient and pollution-free method. The thermal analysis demonstrates that the melting points of the resultant elastomers were in the range of 217.1–233.9 °C, and their initial decomposition temperatures were in the range of 385.3–387.5 °C. That is higher than most commercial polyamide-based thermoplastic elastomers. The tensile strength of the resultant elastomers ranges from 21.9 to 41.1 MPa. According to the high-temperature bending test results, the resultant samples still maintain considerably better mechanical properties than commercial products such as Pebax® 5533 (Arkema, Paris, France), and these novel thermoplastic elastomers could potentially be applied in high-temperature scenes. The non-isothermal crystallization kinetics of the resultant elastomers and PA10T/10I was investigated by means of Jeziorny and Mo’s methods. Both of them could successfully describe the crystallization behavior of the resultant elastomers. Additionally, the activation energy of non-isothermal crystallization was calculated by the Kissinger method and the Friedman equation. The results indicate that the crystallization rates follow the order of TPAE-2000 > TPAE-1500 > PA10T/10I > TPAE-1000. From the crystallization analysis, the crystallization kinetics and activation energies are deeply affected by the molecular weight of hard segment.

ALLEGHENY LUDLUM AL276

Alloy Digest ◽  
1996 ◽  
Vol 45 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Power Plant ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Crevice Corrosion ◽  
Heat Treating ◽  
Chemical Plants ◽  
Temperature Performance

Abstract Allegheny Ludlum AL276 is widely used in the most severe environments found in chemical plants and in power plant desulfurization systems. The high molybdenum level with tungsten gives excellent pitting and crevice corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, joining, and surface treatment. Filing Code: Ni-497. Producer or source: Allegheny Ludlum Corporation.

NICROFER 5520 Co

Alloy Digest ◽  
1995 ◽  
Vol 44 (3) ◽  
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Temperatures ◽  
Heat Treating ◽  
High Temperature Corrosion ◽  
Creep Properties ◽  
Nickel Chromium ◽  
Temperature Performance

Abstract NICROFER 5520 Co is a nickel-chromium-cobalt-molybdenum alloy with excellent strength and creep properties up to high temperatures. Due to its balanced chemical composition the alloy shows outstanding resistance to high temperature corrosion in the form of oxidation and carburization. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ni-480. Producer or source: VDM Technologies Corporation.

CARLSON ALLOY C601

Alloy Digest ◽  
1994 ◽  
Vol 43 (7) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
High Temperatures ◽  
Stress Corrosion Cracking ◽  
Heat Treating ◽  
Resistance To Stress ◽  
Extended Exposure ◽  
Sulfur Containing

Abstract Carlson Alloy C601 is characterized by high tensile, yield and creep-rupture strengths for high temperature service. The alloy is not embrittled by extended exposure to high temperatures and has excellent resistance to stress-corrosion cracking, to carburizing, nitriding and sulfur containing environments. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on forming, heat treating, machining, and joining. Filing Code: Ni-458. Producer or source: G.O. Carlson Inc.

DELORO 716 PM

Alloy Digest ◽  
1993 ◽  
Vol 42 (7) ◽  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Base Alloy ◽  
Nickel Base Alloy ◽  
Temperature Performance ◽  
Nickel Base

Abstract DELORO 716 PM is a nickel-base alloy recommended for handling conditions of wear, erosion, heat and corrosion when impact is also a consideration. This datasheet provides information on composition, physical properties, and hardness. It also includes information on high temperature performance and wear resistance as well as machining and joining. Filing Code: Ni-435. Producer or source: Deloro Stellite Inc.

NILO ALLOY 36

Alloy Digest ◽  
1987 ◽  
Vol 36 (8) ◽  
Keyword(s):  
Thermal Expansion ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Constant Coefficient ◽  
Coefficient Of Thermal Expansion ◽  
Heat Treating ◽  
Temperature Performance ◽  
Iron Nickel

Abstract NILO alloy 36 is a binary iron-nickel alloy having a very low and essentially constant coefficient of thermal expansion at atmospheric temperatures. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-79. Producer or source: Inco Alloys International Inc..

UNITEMP N-155

Alloy Digest ◽  
1971 ◽  
Vol 20 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Wide Temperature Range ◽  
Heat Treating ◽  
Combustion Chambers ◽  
Temperature Performance ◽  
Oxidation And Corrosion

Abstract UNITEMP N-155 is an iron-base austenitic alloy used over a wide temperature range from subzero to about 1800 or 1900 F. It has relatively good oxidation and corrosion resistance. It is used in such applications as turbine rotors, shafts and blades, afterburner parts, nozzles and combustion chambers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance as well as forming, heat treating, joining, and surface treatment. Filing Code: Fe-48. Producer or source: Cyclops Corporation.

PYROTOOL A

Alloy Digest ◽  
1971 ◽  
Vol 20 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Good Ductility ◽  
Extrusion Dies ◽  
Temperature Performance

Abstract PYROTOOL A has been designed to display high strength and good ductility at temperatures up to 1200 F. It is used for high-temperature tooling, extrusion dies, liners, dummy blocks, forging dies, mandrels, holders, etc. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-47. Producer or source: Carpenter.

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