Results 121 to 130 of about 1,235 (163)

Spray drying Eudragit® E-PO with acetaminophen using 2- and 3-fluid nozzles for taste masking. [PDF]

Int J Pharm
Felton LA, Binzet G, Wiley C, McChesney D, McConville J, Ҫelik M, Muttil P.   +6 more
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Anticorrosion activities of polymethacrylic acid and grafted/modified polymethacrylic acid on pure aluminium in acid medium

Materials Today: Proceedings, 2021
Abstract Polymethacrylic acid (PMAA) and modified Polymethacrylic acid functionalized with catechol (PMAA/CAT), hydroquinone (PMAA/HQ) and catechol-hydroquinone (PMAA/CAT-HQ) were synthesized by oxidative decarboxylation method using ammonium persulphate as an oxidant and characterized using UV–Visible spectroscopy, FT-IR, XRD, TGA and SEM studies ...
V. Ramesh, J. Devakumar, P. Amaladass, R. Jaya Santhi   +3 more
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Precipitation of trypsin with polymethacrylic acid [PDF]

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1970
It has been shown that the precipitation of trypsin with polymethacrylic acid results in a reversible or irreversible (after an incubation period) formation of a complex and, in the latter case, a stable, nonactive addition product can be isolated.
M. V. Glikina, S. V. Kol'tsova, G. V. Samsonov   +2 more
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Thermal degradation of polymethacrylic acid

Journal of Polymer Science Part A: Polymer Chemistry, 1992
AbstractThe thermal degradation of polymethacrylic acid was found to have two separate decomposition regions. The first decomposition region, due to anhydride formation primarily, was caused by the conversion of polymethacrylic acid to polymethacrylic anhydride.
Wei-Kuo Chin, Yu-Der Lee, Bang-Chein Ho
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The sedimentation and diffusion of sodium polymethacrylate and polymethacrylic acid

Journal of Polymer Science, 1954
AbstractThe sedimentation constants and diffusion coefficients of sodium polymethacrylate and of polymethacrylic acid have been determined at various concentrations of polymer and of added electrolyte and the nature of the charge effects is considered. A ratio y = (molarity of added electrolyte)/(grundmolarity of polymer) is used to obtain S20 at y = ∞
D. O. Jordan, G. J. Howard
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Potentiometric behavior of polymethacrylic acid

Journal of Polymer Science Part A: General Papers, 1964
AbstractThe potentiometric behavior of polymethacrylic acid is discussed in terms of a conformational transition. A thermodynamic treatment of this transition is presented. The titration curve of polymethacrylic acid is analyzed in a detailed way and quantitative information regarding the transition is obtained.
M. Mandel, J. C. Leyte
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Immobilization of BSA on the polymethacrylic acid

2013 ICME International Conference on Complex Medical Engineering, 2013
N, N'-Methylenebisacrylamide was used as the crosslinking agent to prepare the polymethacrylic acid and its carboxyl groups were modified by N-(3-Dimethy-laminopropyl)-N'-ethyl carbodiimide hydrochloride and N-Hydroxy succinimide. The ability of immobilizing BSA and the influence of reacting time of carrier were studied.
Kai-yue Chi, Fang Lv, Rongji Dai, Xiujie Liu, Yulin Deng   +4 more
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The thermal decomposition of polymethacrylic acid

Polymer, 1960
Abstract When polymethacrylic acid decomposes thermally at 200°C two separate reactions occur. The minor one is depolymerization which results in small yields of monomer. The major reaction is anhydride formation by elimination of water between pairs of carboxyl groups.
D.H. Grant, N. Grassie
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Kinetics of hydrolysis of polymethacrylic acid esters

Polymer Science U.S.S.R., 1975
Abstract Polymethacrylic acid esters have been used as examples in the development of methods for the preparation of stereoregular polymer models with a random distribution of units in the macromolecular chains, and these are used to determine individual rate constants reflecting the effect which adjacent units have on the reactivity of functional ...
V.V. Kreshetov, O.V. Noa, V.I. Kryshtob, N.V. Lelyushenko, V.A. Agasandyan, N.A. Luk'yanova, E. Yun, N.A. Plate, A.D. Litmanovich   +8 more
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The decay of radicals in esters of polymethacrylic acid

European Polymer Journal, 1969
Abstract Free radicals produced by mechanical destruction of polymethylmethacrylate, polyethyl-methacrylate, polybutylmethacrylate and polyallylmethacrylate has been studied by the ESR method. The radicals decay in two temperature ranges around −40° and 50° (or + 5°).
B. Baková, Milan Lazár
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