Synthesis and characterization of styrene‐based polymer supports

Arshady, Reza

doi:10.1002/macp.1988.021890607

Cited by 19 publications

(9 citation statements)

References 18 publications

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“…This conclusion is also valid in the case of styrene-based resins, where it has been suggested [14,37] that the extent of resin swellability is related to the difference between the solubility parameters of the polymer and the solvent. In the case of DMA-based resins, the concept of hydrogen bonding also may be invoked to explain the pattern of resin swellability in protic solvents.…”

Section: Resin Swellabilitysupporting

confidence: 49%

“…Table 2 also shows the effects of crosslink density and the extent of monomer dilution on resin swellability. These effects are discussed elsewhere [14,37] for styrene-based resins, and can be explained similarly for DMA-based resins. The resin sample 6f is prepared from a monomer mixture containing 20 mole% of the crosslinking monomer 2a, and a relatively smaller percentage of monomer diluent.…”

Section: Resin Swellabilitymentioning

confidence: 99%

“…The introduction of reactive groups into the polymer beads can be accomplished either by functionalization [2,[11][12][13] of the preformed beaded resin or by direct incorporation [9,14,15] of suitable functional monomers during the polymer formation.…”

Section: Introductionmentioning

confidence: 99%

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Development of new hydrophilic polymer supports based on dimethylacrylamide

Arshady

1990

Colloid & Polymer Sci

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A survey of the development of hydrophilic resins based on dimethylacrylamide (DMA) is presented. It describes the preparation of DMA-based resins by suspension copolymerization of DMA and acrylamide-based crosslinking and functional monomers. Swellability data for a number of DMA-based resins are tabulated, demonstrating that the resins swell to approximately the same extent in dichloromethane as they do in water, methanol dimethylformamide or dimethylsulpboxide, but they swell only slightly or not at allin tetrahydrofuran. Typical chemical reactions employed for quantitative estimation or derivatization of resin-bound functional groups, including those involving intra-resin erosslinking, are discussed. The development of composite polymer supports, in which the DMA-based polymer is supported on kieselguhr particles or an amphiphilic ion exchange polymer is supported on DMA-based resin beads, is also covered briefly.

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Section: Resin Swellabilitysupporting

confidence: 49%

Section: Resin Swellabilitymentioning

confidence: 99%

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Development of new hydrophilic polymer supports based on dimethylacrylamide

Arshady

1990

Colloid & Polymer Sci

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“…For certain applications (e.g. in biotechnology and immunology), such low levels of functionality may be sufficient; but for most other applications higher levels of [a] For details of polymer types 1 and 3 see [15] and [16], respectively. Polymers 12b, 12c…”

Section: Solvent Compatibilitymentioning

confidence: 99%

The Synthesis of Polymer Supports

Arshady

1991

Advanced Materials

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Conventional polymer supports (polymeric reagents, functional polymers) such as polyacrylamides and polystyrene are based on either strongly polar or nonpolar chemical structures. As a result, these polymers may show low reactivity and poor performance due to their relatively limited ranges of solvent and substrate compatibility. More-recently introduced products are designed on the basis of copolymer structures, which incorporate both polar and nonpolar (hydrophilic and hydrophobic) residues and possess general solvent and substrate compatibility. Due to their ease of production, general solvent and substrate compatibility and improved performance, these new "amphiphilic" copolymers provide new impetus in the study and applications of polymer supports and functional polymers.

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“…[1][2][3][4] These activated acrylate polymers find applications in pharmacological drugs as polymer supports, which are easily degradable, and in the binding of drugs into existing natural and synthetic polymers. [5][6][7] Halogen-substituted phenyl acrylates are a class of activated monomers whose incorporation into the aromatic ring provide the facility for further modification with a H-NMR spectrum of poly(CPA-co-MA).…”

Section: Introductionmentioning

confidence: 99%

Copolymerization of 4-chlorophenyl acrylate with methyl acrylate: synthesis, characterization, reactivity ratios, and their applications in the leather industry

Thamizharasi

Srinivas

Sulochana

et al. 1999

J. Appl. Polym. Sci.

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4-Chlorophenyl acrylate (CPA) was prepared by reacting 4-chlorophenol and acryloyl chloride in the presence of triethylamine in ethyl acetate solution. Poly(4-chlorophenyl acrylate) and copoly(4-chlorophenyl acrylate-methyl acrylate) were synthesized by the free radical polymerization in ethyl acetate at 70°C. All the polymers were characterized by infrared (IR) and nuclear magnetic resonance (NMR) spectroscopic techniques. The composition of the copolymers was determined by the 1 H-NMR spectroscopic technique, that is, by integrating the aromatic peaks corresponding to the 4-chlorophenyl acrylate unit against the carbomethoxy group in the methyl acrylate unit. The reactivity ratios were calculated by Fineman-Ross, Kelen-Tudos (K-T), and the extended Kelen-Tudos methods. The values of r 1 and r 2 obtained by these methods were in close agreement with each other; that is, r 1 (CPA) ϭ 0.64 and r 2 (MA) ϭ 0.13 by the K-T method. The number-average molecular weight (M n ϭ 1.55 ϫ 10 3 ), the weight-average molecular weight (M w ϭ 8.39 ϫ 10 3 ), and the polydispersity index (M w /M n ϭ 5.42) of poly(CPA) were determined by gel permeation chromatography (GPC). Thermal properties of the polymers were studied in a nitrogen atmosphere using thermogravimetric analysis (TGA). As the CPA increases in the copolymer, thermal stability of the copolymer increases (e.g., 90% weight loss occurs at 480°C for 20 mol % CPA, whereas the same weight loss occurs at 571°C for 80 mol % CPA). Acrylic binders, based on the CPA-MA-BA terpolymer, of different glass transition temperatures were prepared for applications in leather industry as top coat and base coat materials. These acrylic emulsions were cast into thin films, and their characteristics were tested for physical properties. These acrylic emulsions were applied as a base coat on leather, and the compositions having T g values of 1.08 and 9.25°C were found to have excellent properties as base coats for leather when compared with commercial samples.

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Synthesis and characterization of styrene‐based polymer supports

Cited by 19 publications

References 18 publications

Development of new hydrophilic polymer supports based on dimethylacrylamide

Development of new hydrophilic polymer supports based on dimethylacrylamide

The Synthesis of Polymer Supports

Copolymerization of 4-chlorophenyl acrylate with methyl acrylate: synthesis, characterization, reactivity ratios, and their applications in the leather industry

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