Synthesis and characterization of highly porous poly(methacrylic-co-triethylene glycol dimethacrylate) by suspension polymerization

Moustafa, A. B.; Faizalla, A.

doi:10.1002/(sici)1097-4628(19990711)73:2<149::aid-app2>3.0.co;2-5

Cited by 8 publications

(3 citation statements)

References 15 publications

(5 reference statements)

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“…Estudos sobre a natureza do diluente, o grau de diluição e o teor de agente reticulador foram feitos embasados também em determinações de propriedades porosas dos materiais 9,12,22,23,[43][44][45][46][47][48][49][50] . A partir daí, passou-se a utilizar tais conhecimentos para se obter materiais com características porosas definidas para uma dada aplicação 24,51,52 .…”

Section: Porosidade Em Copolímeros à Base De Divinilbenzenounclassified

Principais métodos de caracterização da porosidade de resinas à base de divinilbenzeno

Teixeira¹,

2001

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Section: Porosidade Em Copolímeros à Base De Divinilbenzenounclassified

Principais métodos de caracterização da porosidade de resinas à base de divinilbenzeno

Teixeira¹,

2001

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“…Most ion exchange bead resins are manufactured by a suspension polymerization using styrene and divinylbenzene (DVB) 14, 15, 16. The DVB is a crosslinking agent which gives the beads their physical strength.…”

Section: Introductionmentioning

confidence: 99%

One‐pot synthesis of polymeric bead bearing surface charge

Kusuktham

Srikulkit

2004

J of Applied Polymer Sci

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Preparation of polymeric bead bearing surface charge was carried out by using one-pot suspension polymerization of styrene and divinylbenzene (DVB) in the presence of cationic functional monomer, 3-methacryloylamino) propyl trimethyl ammonium chloride (MAPTAC), by using K 2 S 2 O 8 and AIBN as initiators. First, polymerization of MAPTAC in aqueous solution using K 2 S 2 O 8 initiator was performed for the determined time to generate a PMAPTAC radical. Second, the mixture of styrene, DVB, and AIBN initiator was fed into the solution of PMAPTAC radicals and then allowed the polymerization to proceed for another specified time. During the stage of polymerization of styrene and DVB, incorporation of PMAPTAC radicals onto the bead surface took place, resulting in the final bead particle comprising two layers (from SEM results): the inner core of the poly(styrene-co-DVB) support and the outer layer of copolymerization adduct of styrene, DVB, and PMAP-TAC radical revealed by FTIR analysis. Factors affecting particle size, size distribution, and surface functionality (PMAPTAC segment) were investigated. Of all synthetic parameters, types of surfactants and amounts of DVB were found to play an important role in controlling the particle size and the surface functionality, respectively. Nonionic surfactant (cetyl alcohol) tended to produce large particle size with a majority of the population falling in the range of 500-1800 m. Replacement of nonionic surfactant with cationic surfactant (CTAB) resulted in better control of particle size and size distribution because of its effective electrostatic stabilizer. An increase in the amount of DVB led to smoother bead surface as a result of less availability of styrene on bead surface, reducing surface charge density. The results of dye adsorption isotherm further confirmed that the cationic functional group was incorporated into the outer shell of the polymer bead.

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“…Several studies have reported details about the preparation of these resins using porogenic solvents 10, 11. As a consequence of our previously published work,12, 13 we prepared and characterized porous polyhydroxamic acid and a polyhydroxamic–metal catalyst, with a high surface area, by the seed emulsion polymerization technique.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of porous poly(methacrylic acid-co-triethylene glycol dimethacrylate) by seed emulsion polymerization

Moustafa¹,

Faizalla²

2000

J. Appl. Polym. Sci.

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Porous poly(methacrylic acid‐co‐triethylene glycol dimethacrylate) (poly MAA‐co‐3G) particles in the size range of 10–40 μm were prepared via seed emulsion polymerization. Mixtures of linear polymer, solvent, and/or nonsolvent were used as inert diluents. The prepared porous polymer was converted using hydroxylamine hydrochloride and sodium methoxide into the corresponding poly(hydroxamic acid). The surface area of the porous copolymer particles was determined colorimetrically. The effect of the diluent type and concentration on the surface area of the prepared porous polymer was examined. The metal ion absorption capacity of the resin toward the different metal ions was examined using an atomic absorption spectrophotometer. The thermal stability of the polymers was examined by thermal gravimetric analysis. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1209–1215, 2000

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Synthesis and characterization of highly porous poly(methacrylic-co-triethylene glycol dimethacrylate) by suspension polymerization

Cited by 8 publications

References 15 publications

Principais métodos de caracterização da porosidade de resinas à base de divinilbenzeno

Principais métodos de caracterização da porosidade de resinas à base de divinilbenzeno

One‐pot synthesis of polymeric bead bearing surface charge

Synthesis and characterization of porous poly(methacrylic acid-co-triethylene glycol dimethacrylate) by seed emulsion polymerization

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