Synthesis of sulfonated poly(styrene‐ co ‐methyl methacrylate) by semicontinuous heterophase polymerization for filtration membranes

2021 ◽  
Author(s):  
Víctor M. Ovando‐Medina ◽  
Alondra G. Escobar‐Villanueva ◽  
Hugo Martínez‐Gutiérrez
Keyword(s):  
Methyl Methacrylate ◽  
Filtration Membranes ◽  
Heterophase Polymerization ◽  
Semicontinuous Heterophase Polymerization ◽  
Sulfonated Poly

SEMICONTINUOUS HETEROPHASE POLYMERIZATION AS A TOOL FOR PREPARING ULTRAFINE NANOPARTICLES OF IBUPROFEN-POLY(METHYL METHACRYLATE)

NANO ◽  
2014 ◽  
Vol 09 (06) ◽  
pp. 1450060 ◽  
Author(s):  
HENED SAADE ◽  
JESUS CEPEDA GARZA ◽  
MARIA LUISA LOPEZ-QUINTANILLA ◽  
FRANCISCO ENRIQUEZ-MEDRANO ◽  
SALVADOR FERNANDEZ ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Average Diameter ◽  
Scanning Calorimetry ◽  
Poly Methyl Methacrylate ◽  
Heterophase Polymerization ◽  
Hydrophobic Polymers ◽  
Scanning Transmission ◽  
Insoluble Drugs ◽  
20 Nm ◽  
Semicontinuous Heterophase Polymerization

Ibuprofen-loaded poly(methyl methacrylate) nanoparticles with mean diameters smaller than 20 nm were prepared by a novel method. This consists in carrying out a semicontinuous heterophase polymerization, in which a solution of drug-monomer is added on a micellar solution at an appropriate dosing rate. Scanning transmission electron microscopy (STEM) measurements showed number-average diameters in the range 16–19 nm with 1.14–1.15 in polydispersity, determined as the ratio of weight-average to number-average diameter. Drug contents in nanoparticles close to 24% were determined by UV-Vis spectrophotometry, confirming the results obtained from a procedure that combines latex filtration and quasielastic light scattering (QLS) measurements. Differential scanning calorimetry (CDSC) determinations suggest that at the ibuprofen contents attained in this study, crystals and dispersed molecules of the drug coexist inside the nanoparticles. Based on the relative simplicity of the process it is expected that its use will be adopted to prepare ultrafine nanoparticles composed of different hydrophobic polymers and water insoluble drugs.

Semicontinuous heterophase polymerization of methyl methacrylate in the presence of reactive surfactant HITENOL BC10

2012 ◽  
Vol 68 (9) ◽  
pp. 2313-2322 ◽  
Author(s):  
Víctor M. Ovando-Medina ◽  
Piedad S. Piña-García ◽  
Miguel A. Corona-Rivera ◽  
Paola E. Díaz-Flores ◽  
René D. Peralta ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Reactive Surfactant ◽  
Heterophase Polymerization ◽  
Semicontinuous Heterophase Polymerization

Narrow size-distribution poly(methyl methacrylate) nanoparticles made by semicontinuous heterophase polymerization

2010 ◽  
Vol 119 (3) ◽  
pp. 1827-1834 ◽  
Author(s):  
J. Aguilar ◽  
M. Rabelero ◽  
S. M. Nuño-Donlucas ◽  
E. Mendizábal ◽  
A. Martínez-Richa ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Size Distribution ◽  
Narrow Size Distribution ◽  
Poly Methyl Methacrylate ◽  
Heterophase Polymerization ◽  
Semicontinuous Heterophase Polymerization

scholarly journals Effect of Monomer Dosing Rate in the Preparation of Mesoporous Polystyrene Nanoparticles by Semicontinuous Heterophase Polymerization

Molecules ◽  
2014 ◽  
Vol 20 (1) ◽  
pp. 52-69 ◽  
Author(s):  
Dalia Sosa ◽  
Lourdes Guillén ◽  
Hened Saade ◽  
Eduardo Mendizábal ◽  
Jorge Puig ◽  
...  
Keyword(s):  
Polystyrene Nanoparticles ◽  
Heterophase Polymerization ◽  
Semicontinuous Heterophase Polymerization

Modeling the Semicontinuous Heterophase Polymerization for Synthesizing Poly(n -butyl methacrylate) Nanoparticles

2013 ◽  
Vol 7 (9) ◽  
pp. 440-452 ◽  
Author(s):  
María G. Pérez-García ◽  
Lourdes A. Pérez-Carrillo ◽  
Eduardo Mendizábal ◽  
Jorge E. Puig ◽  
Francisco López-Serrano
Keyword(s):  
Butyl Methacrylate ◽  
Heterophase Polymerization ◽  
Semicontinuous Heterophase Polymerization

Organosilicon surfactants: Effects of structure on the kinetics of heterophase polymerization of methyl methacrylate and behavior in Langmuir films on the surface of water

2015 ◽  
Vol 57 (6) ◽  
pp. 560-566 ◽  
Author(s):  
I. A. Gritskova ◽  
Yu. N. Malakhova ◽  
V. M. Kopylov ◽  
D. I. Shragin ◽  
E. V. Milushkova ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Langmuir Films ◽  
Heterophase Polymerization ◽  
And Behavior ◽  
Kinetics Of

Semicontinuous heterophase polymerization under monomer starved conditions to prepare nanoparticles with narrow size distribution

2007 ◽  
Vol 45 (8) ◽  
pp. 1463-1473 ◽  
Author(s):  
Raquel Ledezma ◽  
M. Esther Treviño ◽  
Luis E. Elizalde ◽  
Lourdes A. Pérez-Carrillo ◽  
Eduardo Mendizábal ◽  
...  
Keyword(s):  
Size Distribution ◽  
Narrow Size Distribution ◽  
Heterophase Polymerization ◽  
Semicontinuous Heterophase Polymerization

Performance studies of PEI/SPEI blend ultra-filtration membranes via surface modification using cSMM additives

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 27594-27602 ◽  
Author(s):  
P. Kanagaraj ◽  
S. Neelakandan ◽  
A. Nagendran ◽  
D. Rana ◽  
T. Matsuura ◽  
...  
Keyword(s):  
Surface Modification ◽  
Performance Studies ◽  
Charged Surface ◽  
Filtration Membranes ◽  
Casting Solution ◽  
Ultra Filtration ◽  
Surface Modified ◽  
Sulfonated Poly

Sulfonated poly(ether imide) and charged surface modifying macromolecules were synthesized, characterized and blended into a casting solution of poly(ether imide) in different amounts to develop surface modified ultra-filtration membranes by means of improved hydrophilicity.

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