Synthesis of porous acrylonitrile/methyl acrylate copolymer beads by suspended emulsion polymerization and their adsorption properties after amidoximation

Liu, Xin; Hou, Chen; Wang, Chunhua; Qu, Rongjun; Ji, Chunnuan; Sun, Changmei; Zhang, Ying

doi:10.1016/j.jhazmat.2009.10.111

Cited by 105 publications

(27 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The larger average particle size of the spherical beads after modification indicates that the AO functional group has been introduce into the PAN and poly(AN-co-AA). Similar observations were reported for the introduction of AO functional groups in poly(acrylonitrile-methyl acrylate) system [4]. Figure 7 shows the thermogravimetric (TG) curve and derivative thermogravimetric (DTG) curve for both PAN and poly(AN-co-AA) respectively.…”

Section: Scanning Electron Microscopy (Sem)supporting

confidence: 78%

“…The IR spectra of poly(AN-co-AA) 93:7 after modification with four different methods (Table 1) are shown in Figure 5. The disappearance of the band at 2244 cm −1 indicates that the nitrile groups have been completely modified with hydroxylamine hydrochloride [4]. All methods were found to successfully modify the nitrile groups except for Method 3; where the nitrile stretch still exists in poly(AN-co-AA) after modification.…”

Section: Fourier Transform Infrared (Ftir) Spectramentioning

confidence: 97%

See 1 more Smart Citation

Improved Method for Preparation of Amidoxime Modified Poly(acrylonitrile-co-acrylic acid): Characterizations and Adsorption Case Study

et al. 2015

View full text Add to dashboard Cite

Redox polymerization of poly(acrylonitrile-co-acrylic acid) (poly(AN-co-AA)) is performed at 40 °C under N2 gas by varying the ratio of acrylonitrile (AN) and acrylic acid (AA) in the feed. The yield production of poly(acrylonitrile) (PAN) is 73% and poly(AN-co-AA) with a feed ratio of 93:7 is the highest yield (72%). The PAN and poly(AN-co-AA) are further chemically modify with hydroxylamine hydrochloride. The FTIR spectroscopy is used to confirm the copolymerization of poly(AN-co-AA) and chemical modification of poly(AN-co-AA). Elemental microanalysis shows that the overall trend percentage of carbon, hydrogen, and nitrogen for all feed ratios are slightly decreasing as the feed ratio of AA is increasing except for poly(AN-co-AA) 93:7. The SEM images shows that spherical diameter of poly(AN-co-AA) is smaller compared to the PAN and amidoxime (AO) OPEN ACCESSPolymers 2015, 7 1206 modified poly(AN-co-AA). The TGA (thermogravimetric analysis) analysis reveals that the poly(AN-co-AA) degrades at lower temperatures compared to the PAN but higher than AO modified poly(AN-co-AA). The case study adsorption test showed that the AO modified poly(AN-co-AA) 93:7 had the highest percentage removal of Cd 2+ and Pb 2+.

show abstract

Section: Scanning Electron Microscopy (Sem)supporting

confidence: 78%

Section: Fourier Transform Infrared (Ftir) Spectramentioning

confidence: 97%

Improved Method for Preparation of Amidoxime Modified Poly(acrylonitrile-co-acrylic acid): Characterizations and Adsorption Case Study

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Zhang and co‐workers grafted PAA chains onto a porous poly(glycidyl methacrylate) monolith, and the resulting system showed a Cu 2+ adsorption capacity as high as 35.30 mg g −1 as a result of favorable complexation with the numerous carboxylate groups in the monolith 72. Chen and co‐workers prepared negatively charged porous polyacrylonitrile polymers with improved adsorption capacities for Hg 2+ , Ag + , and Cu 2+ 73. Encouraging results were also obtained with porous sodium alginate, which exhibited a high adsorption capacity of 90.0 mg g −1 for Cr III ions 74.…”

Section: Applicationsmentioning

confidence: 99%

Porous Polyelectrolytes: The Interplay of Charge and Pores for New Functionalities

2018

View full text Add to dashboard Cite

The past decade has witnessed rapid advances in porous polyelectrolytes and there is tremendous interest in their synthesis as well as their applications in environmental, energy, biomedicine, and catalysis technologies. Research on porous polyelectrolytes is motivated by the flexible choice of functional organic groups and processing technologies as well as the synergy of the charge and pores spanning length scales from individual polyelectrolyte backbones to their nano‐/micro‐superstructures. This Review surveys recent progress in porous polyelectrolytes including membranes, particles, scaffolds, and high surface area powders/resins as well as their derivatives. The focus is the interplay between surface chemistry, Columbic interaction, and pore confinement that defines new chemistry and physics in such materials for applications in energy conversion, molecular separation, water purification, sensing/actuation, catalysis, tissue engineering, and nanomedicine.

show abstract

“…Practices in water purification or waste water treatment are based on ion-exchange resins and fibers. The ion-exchange resins often contain specific functional ligands such as iminodiacetic acid (IDA) [2][3][4], amino-phosphonic acid [5], and amidoxime [6][7][8][9], which can readily react with heavy metal ions to form stable coordinate covalent bonds [4]. Fibrous ion-exchangers are characterized by a high specific surface site, good kinetic properties, and a ready-made structure of a variety of fibers for different fabrications [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…Most acrylonitrile-based synthetic fiber is made by reactions with specific aqueous reagents -2-aminoimidazole [12], aminourea [13], 2,4-dinitrophenylhydrazine [14], phenylhydrazine [15], and ethylenediamine [16] -to yield polyfunctional fibers for pre-concentration and separation of trace metal ions. Polymers based on the acrylonitrile group present reactive pendant cyano groups which can readily be modified by different kinds of reagents through nucleophilic addition and cyclo addition reactions [9]. A variety of chemically active textile materials based on polypropylene (PP) and polyacrylic have been developed for ion-exchange applications and under the registered trademark of FIBAN [17].…”

Section: Introductionmentioning

confidence: 99%

Metal adsorption behavior of 2,4-dinitrophenyl hydrazine modified polyacrylonitrile nanofibers

Jitjaicham¹,

Kampalanonwat²,

Supaphol³

2013

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Electrospun polyacrylonitrile nanofiber mats (es-PAN nanofiber mats) were surface modified by 2,4-dinitrophenyl-hydrazine (2,4-DNPH) to yield the metal ion adsorption material (es-PAN-DNPH nanofiber mats) and were investigated their adsorption behaviors. Functional modification of the es-PAN nanofiber mats and conventional polyacrylonitrile fibers (c-PAN fibers) were prepared by using 4% (w/v) of 2,4-DNPH in 1,2-ethandiol at 110°C for 6 h to obtained c-PAN-DNPH fibers. The average diameter of the es-PAN-DNPH nanofiber mats was 0.25 !m, which was comparatively smaller than the es-PAN precursor. Their functional groups were confirmed by Fourier transform infrared spectroscopy (FT-IR) and their adsorption behaviors to trace Ag(I), Bi(III), Ga(III), and In(III) from aqueous solutions and were investigated by the induced couple plasma technique. The FT-IR spectra showed the existence of NN=C-NHNH-, O=C-NHNH-, and -NO 2 functional groups for metal complexes. The adsorption capacities of the obtained es-PAN-DNPH were 7.14 to 36.36% higher than those of c-PAN-DNPH fibers. All adsorption plots onto es-PAN-DNPH nanofiber mats and c-PAN-DNPH fibers followed the Langmuir isotherm and indicated monolayer adsorption characteristics.

show abstract

Synthesis of porous acrylonitrile/methyl acrylate copolymer beads by suspended emulsion polymerization and their adsorption properties after amidoximation

Cited by 105 publications

References 50 publications

Improved Method for Preparation of Amidoxime Modified Poly(acrylonitrile-co-acrylic acid): Characterizations and Adsorption Case Study

Improved Method for Preparation of Amidoxime Modified Poly(acrylonitrile-co-acrylic acid): Characterizations and Adsorption Case Study

Porous Polyelectrolytes: The Interplay of Charge and Pores for New Functionalities

Metal adsorption behavior of 2,4-dinitrophenyl hydrazine modified polyacrylonitrile nanofibers

Contact Info

Product

Resources

About