Beaded reactive polymers, 1. Effect of synthesis variables on pore size and its distribution in beaded glycidyl methacrylate-divinyl benzene copolymers

Kotha, Arika; Raman, Rajan C.; Ponrathnam, S.; Shewale, Jaiprakash G.

doi:10.1016/1381-5148(95)00081-x

Cited by 18 publications

(11 citation statements)

References 16 publications

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“…A number of studies have been performed concerning the effects of variations in the concentration and type of diluent used 1, 34–37. For oil in water systems, the porogenic diluents are generally saturated hydrocarbons, aliphatic alcohols, and carboxylic acids.…”

Section: Resultsmentioning

confidence: 99%

“…This article also investigates the influence of crosslinking density and porogen volume on the pore size, pore size distribution, specific pore volume, and surface area. Because, physicochemical parameters like, the level of crosslinker and the type and level of porogens, are very important in controlling the morphology and internal structure of the resulting copolymers 20–22. These are the main variables which affect the porosity, specific pore volume, and surface area significantly 23.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of reactive macroporous poly(glycidyl methacrylate‐triallyl isocyanurate‐ethylene glycol dimethacrylate) microspheres by suspension polymerization: Effect of synthesis variables on surface area and porosity

Rahman

Iqbal

Rahman

et al. 2011

J of Applied Polymer Sci

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A novel macroporous poly(glycidyl methacrylate-triallyl isocyanurate-ethyleneglycol dimethacrylate) copolymer, hereinafter P GMA-TAIC-EGDMA , of controlled bead size was prepared via free radical suspension copolymerization. The effects of varying the concentration of crosslinking agents and porogenic diluent on the average pore diameter, pore size distributions, specific surface area, and pore volume of the copolymer matrix were thoroughly investigated. The spherical beads were characterized by elemental analysis, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The specific pore volume, average pore diameter, pore size distribution, and the specific surface area were measured by Mercury intrusion porosimetry and BET adsorption method, respectively. The porous properties of the polymer matrix are a direct consequence of the amount and quality of the porogenic solvent, the percentage of crosslinking monomers, and the ratio between the monomers and porogen phases. When the polymer was prepared at 30 and 40% crosslinking density, and 75 and 100% diluents, respectively, it showed a fine beads morphology, mechanical stability and pore size distributions. By comparing the copolymers P GMA-TAIC-EGDMA and P GMA-EGDMA , it was found that the former is more stable both thermally and mechanically than its predecessor. The presence of epoxide functionalities of macroporous P GMA-TAIC-EGDMA beads makes it a versatile carrier. The resulting polymers have the potential for wide applications. V C 2011 Wiley Periodicals, Inc. J Appl Polym Sci 124: [915][916][917][918][919][920][921][922][923][924][925][926] 2012

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of reactive macroporous poly(glycidyl methacrylate‐triallyl isocyanurate‐ethylene glycol dimethacrylate) microspheres by suspension polymerization: Effect of synthesis variables on surface area and porosity

Rahman

Iqbal

Rahman

et al. 2011

J of Applied Polymer Sci

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“…The interest stems from the variety of possible modifications of their chemical and physical properties [1][2][3][4]. Increasing environmental concerns in wastewater treatment has lead to the use of organic ligands anchored to solid supports in order to remove and recover important metal ions from aqueous solution [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Porous copolymer beads have been prepared by suspension copolymerization of vinyl monomers and cross-linking agent such as DVB in presence of an inert diluent [15,[17][18][19]. For many applications, the presence of meso-and/or macropores is a key requirement to minimize diffusional limitations [3]. The aim of this work is to synthesize copolymer network beads based on acrolein (ACR) with suitable porous structure for modifying them chemically by use of the reaction with hydroxylamine.…”

Section: Introductionmentioning

confidence: 99%

Oxime groups introduction in copolymer networks based on acrolein

Scampini

Aguiar

Aguiar³

et al. 2004

Materials Letters

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“…These porogens may be extracted after polymerization, leaving holes or pores in the copolymer structures. Good solvents, nonsolvents, polymeric solvents, or mixtures of them may be used as porogens, leading to different kinds of pore size distributions.A variety of acrylic ester resins with different specific areas and porosity had been prepared by varying the type and ratio of porogen at a given condition [13,[25][26][27][28][29]. However, the preparation of perfusion particles was complicated, and this method was most used in trimethylolpropane trimethacrylate, 2-hydroxyethyl methacrylate, EGDMA, or methacrylate systems, and long alkyl chain acrylates systems have not been reported.…”

mentioning

confidence: 97%

Heterogeneous Structures in the Synthesis of Hydrophobic Lauryl Acrylate-Styrene-Ethylene Glycol Dimethacrylate Copolymer Particles

Ren

Luan

2010

International Journal of Polymeric Materials

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Novel crosslinked hydrophobic lauryl acrylate-styrene-ethylene glycol dimethacrylate copolymer particles were synthesized with heterogeneous structures by radical suspension copolymerization with benzoyl peroxide as the initiator. Ethylene glycol dimethacrylate was used as a crosslinking agent; toluene, cyclohexanol, 1-octanol and liquid paraffin were used as porogens. The effects of the crosslinking monomer and porogens on the morphologies of the copolymer microspheres were investigated. The copolymers were characterized by FTIR, SEM and swelling in toluene. Permanent pores remained in the dried polymeric particles prepared with nonsolvating porogens at certain crosslink densities as indicated by SEM pictures. The results of swelling revealed that 1-octanol was the most effective porogen, leading to the LA-S-EGDMA copolymer particles with maximum porosity and optimized spheric morphology. Furthermore, lower crosslink density and higher porogen contents promote the formation of porous morphology. INTRODUCTIONThe applications of methacrylic ester crosslinked polymers with permanently porous structures have attracted increasing attention all over the world. Exploitation occurs in areas a diverse as chromatography, polymer-supported catalysts, ion recovery [1], water treatment and purification [2][3][4][5]. For many applications it is important to utilize a porous resin with a high surface area. The formation conditions of porous (heterogeneous) structures in resin have been the subject of both applied and fundamental research for many years. As early as the end of the 1950s, Du s sek [6], Kunin [7,8], and Millar et al. [9][10][11] had already discovered this polymerization technique. According to the present reports [12][13][14][15][16][17][18][19][20][21][22][23][24], it was concluded that porous matrices can be obtained by suspension copolymerization, using monovinylic monomers and crosslinking reagents in the presence of inert porogens. These porogens may be extracted after polymerization, leaving holes or pores in the copolymer structures. Good solvents, nonsolvents, polymeric solvents, or mixtures of them may be used as porogens, leading to different kinds of pore size distributions.A variety of acrylic ester resins with different specific areas and porosity had been prepared by varying the type and ratio of porogen at a given condition [13,[25][26][27][28][29]. However, the preparation of perfusion particles was complicated, and this method was most used in trimethylolpropane trimethacrylate, 2-hydroxyethyl methacrylate, EGDMA, or methacrylate systems, and long alkyl chain acrylates systems have not been reported. Furthermore, the choice of polymerization conditions and experimental optimization must be specific for each chosen monomer system [20]. So it is necessary to further study.In our work, a novel hydrophobic porous copolymer, lauryl acrylatestyrene-ethylene glycol dimethacrylate copolymer, was prepared by the suspension polymerization technique in the presence of porogens. The effect of the independen...

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Beaded reactive polymers, 1. Effect of synthesis variables on pore size and its distribution in beaded glycidyl methacrylate-divinyl benzene copolymers

Cited by 18 publications

References 16 publications

Synthesis and characterization of reactive macroporous poly(glycidyl methacrylate‐triallyl isocyanurate‐ethylene glycol dimethacrylate) microspheres by suspension polymerization: Effect of synthesis variables on surface area and porosity

Synthesis and characterization of reactive macroporous poly(glycidyl methacrylate‐triallyl isocyanurate‐ethylene glycol dimethacrylate) microspheres by suspension polymerization: Effect of synthesis variables on surface area and porosity

Oxime groups introduction in copolymer networks based on acrolein

Heterogeneous Structures in the Synthesis of Hydrophobic Lauryl Acrylate-Styrene-Ethylene Glycol Dimethacrylate Copolymer Particles

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