Methacrylic acid

About: Methacrylic acid is a research topic. Over the lifetime, 13058 publications have been published within this topic receiving 173201 citations. The topic is also known as: α-Methacrylic acid & 2-Methylacrylic acid.

Highly pH and temperature responsive microgels functionalized with vinylacetic acid

Abstract: Temperature-responsive microgels based on poly(N-isopropylacrylamide) (PNIPAM) and functionalized with vinylacetic acid (VAA) are observed to exhibit a host of novel swelling responses compared with equally functionalized microgels prepared using the conventional acrylic acid (AA) and methacrylic acid (MAA) comonomers. VAA−NIPAM microgels are ionized over a narrow pH range and show functional group pKa values which are independent of the degree of ionization. Ionization induces a much larger swelling response in VAA−NIPAM microgels than in the conventional microgels; upon ionization at physiological temperature, VAA−NIPAM swells 3 times more than either AA−NIPAM or MAA−NIPAM. VAA−NIPAM microgels also display sharp, PNIPAM-like thermal deswelling profiles when protonated but, upon ionization, undergo no volume phase transition up to at least 70 °C. The highly responsive and tunable ionization and swelling profiles observed for VAA−NIPAM are consistent with the tendency of VAA to behave as a chain transfer ...

Developments in Polymer Degradation - 5

Abstract: 1. Degradation of Polymers of Methacrylic Acid Salts and Copolymers of these Salts with Methyl Methacrylate.- 2. Thermal Degradation Mechanisms in Condensation Polymers.- 3. Degradation and Stabilisation of Polyesters of Biological and Synthetic Origin.- 4. Degradation of Poly (methyl methacrylate) by Ionizing Radia-tion and Mechanical Forces.- 5. Mechanochemistry of Lignocellulosic Materials.- 6. Reactions of Small Radicals with Polymers during Degradation.- 7. Mechanism of Fire-retardancy in Chloroparaffin-Polymer Mixtures.

Preparation and Properties of Magnetite and Polymer Magnetite Nanoparticles

Abstract: A novel approach to prepare magnetic polymeric nanoparticles by synthesis of the magnetite core and polymeric shell in a single inverse microemulsion is reported. Stable magnetic nanoparticles colloid dispersion with narrow size distribution can thus be produced. The microemulsion seed copolymerization of methacrylic acid, hydroxyethyl methacrylate, and cross-linker results in a stable hydrophilic polymeric shell of the nanoparticles. The preparation of the nanoparticles was carried out also by the two-stage microemulsion process and the seed precipitation polymerization. The particle size was varied in the range 80−320 nm by changing of the monomer concentration and water/surfactant ratio. The magnetic properties and the size distribution of the nanoparticles synthesized by these three methods were compared. The polymeric nanoparticles synthesized in single microemulsion have superparamagnetic properties and the narrowest size distribution.

Standard Pressure Volume Temperature Data for Polymers

Abstract: 1. INTRODUCTION Pressure-Volume-Temperature (PVT) Data: Equilibrium and Nonequilibrium States of Polymers Scope of This Data Collection Equipment for PVT Measurements: Piston-Die Technique Confining Fluid Technique Equipment Used for Data in This Book Experimental Procedures: Stan- dard PVT Runs Sample Preparation Determination of the Specific Volume at Ambient Conditions Data Interpretation: Tables and Graphs in This Collection Liquids Materials Undergoing a Glass Transition Materials Having a Melt Transition Filled Materials and Blends Application of PVT Data Empirical and Theoretical Fits to PVT Data References 2. HYDROCARBONS n-Undecane (C11H24) n-Tetradecane (C14H30) n-Hexadecane (C16H34) n-Tetracosane (C24H50) n-Hexatriacotane (C36H74) n-Tetratetracotane (C44H90) 3. HYDROCARBON POLYMERS Polyethylene (linear) Polyethylene (branched) Polyethylene wax (M ~2100) Polyethylene wax (M ~1000) Poly(propylene) (atactic) Polypropylene (atactic) Polypropylene (isotactic) Poly(1-butene) (atactic) Poly(1-butene) (isotactic) Poly(1-octene) Polyisobutylene (M ~ 4.2 x 105) Polyisobutylene (M ~ 300) Polyisoprene (hydrogenated) Poly(4-methyl pentene-1) Polynorbornene Hydrocarbon resin Poly(ethylene-co-propylene) (23% polypropylene) Poly(ethylene-co-propylene) (57% propylene) Poly(ethylene-co-propylene) (76% propylene) Poly(ethylene-co-propylene) (84% propylene) Polybutadiene (M ~ 2.33 x 105) Polybutadiene (cis & trans) Polybutadiene (cis) Polybutadiene (M ~ 3000) Polybutadiene (M ~ 1000) Natural rubber 4. ETHYLENE POLYMERS crylic acid) Poly(ethylene-co-methacrylic acid) (9% methacrylic acid) Poly(ethylene-co-methacrylic acid) (11.5% methacrylic acid) Poly(ethylene-co-methacrylic acid) (12% methacrylic acid) Poly(ethylene-co-methacrylic acid) (15% methacrylic acid) Poly(ethylene-co-methacrylic acid) (20% methacrylic acid) Ionomer (~ 1.5% Na) Ionomer (~ 2.2% Na) Poly(ethylene-co-acrylic acid) (9% acrylic acid) Poly(ethylene-co-acrylic acid) (10% acrylic acid) Poly(ethylene-co-acrylic acid) (20% acrylic acid) Poly(ethylene-co-vinyl alcohol) (56% vinyl alcohol) Poly(ethylene-co-vinyl alcohol) (62% vinyl alcohol) Poly(ethylene-co-vinyl alcohol) (70% vinyl alcohol) 5. STYRENICS Polystyrene (M ~ 1.1 x 105) Polystyrene (M ~ 34500) Polystyrene (M ~ 9000) Polystyrene (M ~ 910) Poly(4-chloro styrene) Poly(styrene-block-hydrogenated butadiene) 6. ACRYLICS Poly(methyl methacrylate) (M ~ 1 x 105) Poly(methyl methacrylate) (M ~ 40000) Poly(methyl methacrylate) (M ~ 25000) Poly(methyl methacrylate) (M ~ 10000) Poly(ethyl methacrylate) Poly(propyl methacrylate) Poly(n-propyl methacrylate) Poly(n-butyl methacrylate) Poly(n-hexyl methacrylate) Poly(lauryl methacrylate) Poly(isobutyl methacrylate) Poly(methyl acrylate) Poly(ethyl acrylate) Poly(n-propyl acrylate) Poly(n-butyl acrylate) Poly(acrylic acid) Poly(methacrylic acid) 7. POLYACRYLONITRILE AND COPOLYMERS Polyacrylonitrile Poly(styrene-co-acrylonitrile) (25% acrylonitrile) Poly(acrylonitrile-co-butadiene) (67% butadiene) Nitrile rubber compound 8. OTHER C-C MAIN CHAIN POLYMERS Poly(vinyl acetate) Poly(vinyl alcohol) Poly(vinyl butyral) Poly(vinyl carbazole) Poly(vinyl chloride) Poly(vinyl fluoride) Poly(vinyl formal) Poly(vinylidene fluoride) Poly(tetrafluoro ethylene) Fluoropolymer glass Fluoroelastomer compound Perfluoroelastomer compound 9. POLYETHERS Poly(methylene oxide) (homopolymer) Poly(methylene oxide) (copolymer) Poly(ethylene oxide) (M x105) Poly(ethylene oxide) (M ~ 18500) Poly(ethylene oxide) (M ~ 1540) Poly(ethylene oxide) (M ~ 600) Poly(ethylene oxide) (M ~ 300) Poly(ethylene oxide) mono methyl ether (M ~ 750) Poly(ethylene oxide) mono methyl ether (M ~ 350) Poly(ethylene oxide) dimethyl ether (M ~ 1000) Poly(ethylene oxide) dimethyl ether (M ~ 600) Poly(propylene oxide) (M ~ 4000) Poly(propylene oxide) (M ~ 2000) Poly(propylene oxide) (M ~ 1025) Poly(propylene oxide) (M ~ 400) Poly(propylene oxide) dimethyl ether (M ~ 2000) Poly(propylene oxide) dimethyl ether (M ~ 1025) Poly(propylene oxide) dimethyl ether (M ~ 400) Poly(hexafluoropropylene oxide) (M ~ 7000) Poly(hexafluoropropylene oxide) (M ~ 2000) Silicone fluid (commercial) Poly(dimethyl siloxane) (M ~ 1.5 x 106) Poly(dimethyl siloxane) (M ~ 2.24 x 105) Poly(dimethyl siloxane) (M ~ 17200) Poly(dimethyl siloxane) (M ~ 9670) Poly(dimethyl siloxane) (M ~ 3900) Poly(dimethyl siloxane) (M ~ 870) Poly(dimethyl siloxane) (M ~ 340) 10. POLYAMIDES Nylon 6 Nylon 7 Nylon 9 Nylon 11 Nylon 12 Nylon 4/6 Nylon 6/6 Nylon 6/6 (rubber toughened) Nylon 6/7 Nylon 6/8 Nylon 6/9 Nylon 6/10 Nylon 6/10 (pure) Nylon 6/12 Nylon 13/13 Nylon 6I/6T Aramid fiber 11. POLYESTERS Poly(ethylene adipate) Poly(ethylene succinate) Polycaprolactone Poly-L-lactide Poly(ethylene isophthalate) Poly(ethylene terephthalate) Poly(ethylene naphthenoate) Poly(butylene terephthalate) Bisphenol A isophthalate Polyarylate 12. VARIOUS MAIN CHAIN AROMATICS Polycarbonate Chloral polycarbonate Poly(2-6-dimethyl phenylene oxide) Phenoxy resin Polyetherimide Polyimide (film) Poly(ether ether ketone) Poly(ether sulphone) Polysulfone Poly(azomethine ether) (n = 4) Poly(azomethine ether) (n= 7) Poly(azomethine ether) (n= 8) Poly(azomethine ether) (n= 9) Poly(azomethine ether) (n= 10)Poly(azomethine ether) (n= 11) 13. BLENDS Polystyrenepoly(vinyl methyl ether) blend (90/10) Polystyrenepoly(vinyl methyl ether) blend (80/20) Polystyrenepoly(vinyl methyl ether) blend (70/30) Polystyrenepoly(vinyl methyl ether) blend (60/40) Poly- styrenepoly(vinyl methyl ether) blend (50/50) Polystyrenepoly(vinyl methyl ether) blend (40/60) Polystyrenepoly(vinyl methyl ether) blend (30/70) Polystyrenepoly(vinyl methyl ether) blend (20/80) Poly- styrenepoly(vinyl methyl ether) blend (10/90) Poly(2,6-dimethyl phenylene oxide)polystyrene blend (90/10) Poly(2,6-dimethyl phenylene oxide)polystyrene blend (80/20) Poly(2,6-dimethyl phenylene oxide)poly- styrene blend (70/30) Poly(2,6-dimethyl phenylene oxide)polystyrene blend (60/40) Poly(2,6-dimethyl phenylene oxide)polystyrene blend (50/50) Poly(2,6-dimethyl phenylene oxide)polystyrene blend (40/60) Poly(2,6-dimethyl phenylene oxide)polystyrene blend (30/70) Poly(2,6-dimethyl phenylene oxide)polystyrene blend (20/80) Poly(2,6-dimethyl phenylene oxide)polystyrene blend (10/90) Polyethersulphonepoly- (ethylene oxide) blend (40/60) Polyethersulphonepoly(ethylene oxide) blend (20/80) 14. MISCELLANEOUS Starch triacetate >Poly(ethylene-co-vinyl acetate) (14% vinyl acetate) Poly(ethylene-co-vinyl acetate) (18% vinyl acetate) Poly(ethylene-co-vinyl acetate) (25% vinyl acetate) Poly(ethylene-co-vinyl acetate) (28% vinyl acetate) Poly(ethylene-co-vinyl acetate) (33% vinyl acetate) Poly(ethylene-co-vinyl acetate) (40% vinyl acetate) Poly(ethylene-co-vinyl acetate) (65% vinyl acetate) Poly(ethylene-co-methacrylic acid) (4% metha