Research progress in macroporous styrene-divinylbenzene co-polymer microspheres

Liu, Qingquan; Wang, Li; Xiao, Anguo

doi:10.1163/156855507781833620

Cited by 34 publications

(22 citation statements)

References 94 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Preparation of the macroporous styrene‐divinylbenzene (S‐DVB) copolymer beads, which are widely used as starting materials in synthesis of ion exchange resins, solid acid catalysts, and specific sorbents, has been the subject of many research and review articles 1, 2. The copolymer beads are generally produced via suspension polymerization of styrene and divinylbenzene (DVB), in the presence of a diluent as porogen.…”

Section: Introductionmentioning

confidence: 99%

Correlations for prediction of specific surface area and bulk and apparent densities of porous styrene‐divinylbenzene copolymers

Nodehi¹,

Hajiebrahimi²,

Parvazinia³

et al. 2010

J of Applied Polymer Sci

View full text Add to dashboard Cite

Macroporous styrene-divinylbenzene copolymers with different degree of crosslinking were prepared by suspension polymerization in presence of different binary mixtures of toluene and heptane, as diluent. Specific surface area, bulk and apparent densities, and pore volume of the resulting beads were determined experimentally. Applying the least square method to the experimental data, correlations for prediction of these properties were obtained. Effects of divinylbenzene concentration, diluent to comonomer volume ratio, and composition of the diluent mixture were considered in developing the aforementioned correlations. The influence of the reaction recipe on porous structure of the samples was also studied using scanning electron microscope (SEM).

show abstract

Section: Introductionmentioning

confidence: 99%

Correlations for prediction of specific surface area and bulk and apparent densities of porous styrene‐divinylbenzene copolymers

Nodehi¹,

Hajiebrahimi²,

Parvazinia³

et al. 2010

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The methyl methacrylate–divinylbenzene copolymers were chosen for the present study because they can have a broad range of polar and hydrophilic characters when compared with the conventional porous polymeric adsorbents which are either nonpolar and hydrophobic, e.g., styrene‐divinylbenzene,1, 11 or polar and hydrophilic, e.g., methyl methacrylate–ethylene glycol dimethacrylate 1. Further, the ester group of the methyl methacrylate has been chemically transformed into other functional groups, e.g., hydrolyzed to weak acid cation‐exchanger,12 sulfonated to cation‐exchanger,13 converted to other functional groups that can be used for immobilization of biological molecules,14 etc.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and simple method of estimating macroporosity of methyl methacrylate–divinylbenzene copolymer beads

Malik

Ali

2008

J of Applied Polymer Sci

View full text Add to dashboard Cite

Macroporous methyl methacrylate-divinylbenzene copolymer beads having diameter $ 300 lm were synthesized by free radical suspension copolymerization. The macroporosity was generated by diluting the monomers with inert organic liquid diluents. The macroporosity was varied in the range of $ 0.1 to $ 1.0 mL/g by varying a number of porosity controlling factors, such as the diluents, solvent to nonsolvent mixing ratios when employing a mixture of the two diluents, degree of dilution, and crosslinkage. Increase in pore volume from 0.1 to 0.45 mL/g resulted in a sharp increase in mesopores having diameters in the range of 3-20 nm whereas the macropores remained negligible when compared with mesopores. Increase in pore volume from 0.45 to 1 mL/g resulted in a sharp increase in macropores, whereas mesopores having diameters in the range of 3-20 nm remained almost constant. The mesopores having diameters in the range of 20-50 nm showed an increase with the increase in pore volume throughout the whole range of pore volume studied. Macroporosity characteristics, i.e., pore volume (V m ), surface area (SA), and pore size distributions were evaluated by mercury penetration method. Statistical analysis of the data obtained in the present study shows that the macroporosity characteristics can be estimated with a reasonable accuracy from the pore volumes, which in turn are determined from the densities of the copolymers. These results are explained on the basis of pore formation mechanism.

show abstract

“…Such copolymers are also called macroreticular or macroporous copolymers. A lot of research and development is going on to optimize the existing products and to develop new products related to macroporous copolymers, which is evidenced by frequent reviews [18–23] and recent Articles [24–32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of strong acid resins from macroporous styrene–divinylbenzene copolymers: Is diluent extraction step necessary?

Ali

Malik

Ahmed

2012

Polymer Engineering & Sci

View full text Add to dashboard Cite

Strong acidic cation‐exchange resins derived from the same batch of styrene–divinylbenzene copolymers with and without acetone washing are compared with respect to ion‐exchange capacity and leachable organics. The capacity was the same throughout 10 cycles of resin exhaustion and regeneration. Ultraviolet spectra showed the same level of leachable organics in the two cases compared. Fourier transform infrared spectra were also similar. The results are explained on the basis of the fact that n‐heptane and toluene used as diluents were removed through a steam distillation phenomenon during the copolymer curing step. Residual homopolymers were washed away with water after the sulfonation of the copolymers just like acetone washing of them from the copolymer. Acetone washing, which accounts for about 80% of the cost of the chemicals in the copolymer synthesis, can be eliminated in the case of diluents such as n‐heptane and toluene, making the process simple, economical, and environment friendly. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers

show abstract

Research progress in macroporous styrene-divinylbenzene co-polymer microspheres

Cited by 34 publications

References 94 publications

Correlations for prediction of specific surface area and bulk and apparent densities of porous styrene‐divinylbenzene copolymers

Correlations for prediction of specific surface area and bulk and apparent densities of porous styrene‐divinylbenzene copolymers

Synthesis and simple method of estimating macroporosity of methyl methacrylate–divinylbenzene copolymer beads

Synthesis of strong acid resins from macroporous styrene–divinylbenzene copolymers: Is diluent extraction step necessary?

Contact Info

Product

Resources

About