Carrier-mediated blends of Chitosan with polyvinyl chloride for different applications

Sobahi, Tariq R.; Makki, M. S. I.; Abdelaal, Magdy Y.

doi:10.1016/j.jscs.2011.03.015

Cited by 24 publications

(10 citation statements)

References 28 publications

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“…As the glucosamine and acetylglucosamine molecules are the constituents of the chitosan, it is worth to compare the theoretical spectra of these molecules with the experimental findings for chitosan. According to experimental data [30,31], chitosan IR spectra range from 750 to 4000 cm -1 and three main regions of absorption, ~750−1700 cm −1 , 2850-3000 cm −1 , and 3100−3700 cm −1 . The vibrations of C-O-C group of ring mentioned above (1118 in A Y , 1075 in A X , and 1091 cm −1 in B) agree with 1050 cm −1 in chitosan [30].…”

Section: Vibrational Spectramentioning

confidence: 99%

“…According to experimental data [30,31], chitosan IR spectra range from 750 to 4000 cm -1 and three main regions of absorption, ~750−1700 cm −1 , 2850-3000 cm −1 , and 3100−3700 cm −1 . The vibrations of C-O-C group of ring mentioned above (1118 in A Y , 1075 in A X , and 1091 cm −1 in B) agree with 1050 cm −1 in chitosan [30]. The bending scissors vibration of NH 2 (1673 in A Y , 1687 in A X , and 1582 cm −1 in B), correspond to the band of 1559 cm −1 reported in [30], and 1594 cm −1 in [31].…”

Section: Vibrational Spectramentioning

confidence: 99%

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Interactions Between Sodium Ion and Constituents of Chitosan: DFT Study

Emmanuel¹

2015

IJMSA

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Glucosamine and acetylglucosamine are the constituents of chitosan and chitin natural biopolymers. In the present study, the structure and properties of the D-glucosamine monomer (A), N-acetylglucosamine monomer (B), and ion-molecular adducts with Na + cation have been explored. The equilibrium geometrical structure, vibrational spectra of the species have been determined, using the DFT/B3LYP method with the 6-31G(d) basis set. Larger basis sets up to 6-311++G(d,p) were utilized to compute energies of reactions between Na + ion and A and B molecules. The exothermicity and spontaneous character of the adducts formation reactions have been confirmed.

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Section: Vibrational Spectramentioning

confidence: 99%

Section: Vibrational Spectramentioning

confidence: 99%

Interactions Between Sodium Ion and Constituents of Chitosan: DFT Study

Emmanuel¹

2015

IJMSA

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“…Chitosan has been modified with 5-fluorouracil to serve in the in-vitro antitumor drug delivery system 1,2 . Chitosan has been modified also with different simple organic and polymeric materials as well as multi-walled carbon nanotubes (CNTs) to be used, for instance, in the ion-exchange applications 6,8,9 . Also, both urea-and melamine-formaldehyde waste resins have been used as reinforcing materials within unsaturated polyester matrix 7 .…”

Section: Asian Journal Of Chemistry; Vol 26 No 21 (2014) 7239-7244mentioning

confidence: 99%

“…Among the most attention-attracting applications of the polymers is the application of the modified polymers in the wastewater treatment as well as for the isolation and separation of heavy metal ions from their aqueous solutions. Such polymers with certain functional groups are very important in the environmental applications [8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Chitosan/Urea-Formaldehyde Hollow Resin for Metal Ion Removal

Abdelaal¹,

Bahaffi²,

El-Sayed³

2014

Asian J. Chem.

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In the current study, a series of hollow resins has been synthesized by using chitosan succinate and urea-formaldehyde resin as a cage resin to prepare new polychelates for different metal ions. Resins were characterized by FT-IR spectroscopy, thermal analysis and scanning electron microscopy. Resins have also been investigated for the removal of metal ions from their aqueous solutions through the formation of polychelates of the metal ions and their sorption capacity of such metal ions was determined. The hollow resin exhibited higher surface area than its separate components which facilitates higher ion uptake of metal ions from aqueous solutions.

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“…Many candidates, mineral clays [24], polyurethane [25], polyvinyl alcohol (PVA) [26] and polyvinyl chloride (PVC) [27], have been used to take shape composites hydrogel with chitosan. Among these composite materials, PVA has been used in many biomaterial applications, owing to its low cost, nontoxicity, good mechanical strength, biocompatibility, and chemical stability [28].…”

Section: Introductionmentioning

confidence: 99%

Preparation of polyvinyl alcohol/chitosan hydrogel compounded with graphene oxide to enhance the adsorption properties for Cu(II) in aqueous solution

Wang

et al. 2015

J Polym Res

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A novel bio-adsorbent, composite hydrogel beads, composed of polyvinyl alcohol (PVA), chitosan (CS) and graphene oxide (GO) was prepared by an instantaneous gelation method. The micromorphology and thermal stability of the PVA/CS/GO hydrogel beads were characterized by scanning electronic microscope (SEM) and thermo gravimetric analysis (TGA) respectively. Adsorption of Cu(II) onto PVA/CS/GO hydrogel beads was investigated with respect to pH, initial concentration, temperature and adsorption time. Adsorption data were well matched by Langmuir isotherm and pseudo-second-order kinetic model at the optimum pH 5.5. The maximum adsorption capacities of PVA/CS/GO hydrogel beads were found to be 162 mg g −1 for Cu(II) at 30°C, which was much higher than that of PVA/CS hydrogel. Thermodynamic studies indicated that the adsorption was spontaneous and endothermic process in nature. Besides, desorption efficiency and reusability of the adsorbents were assessed on basis of six consecutive adsorption-desorption cycles. Based on these studies, it can be seen that PVA/CS/ GO hydrogel beads will be a potential recyclable adsorbent for removal of hazardous metal ions in waste water.

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Carrier-mediated blends of Chitosan with polyvinyl chloride for different applications

Cited by 24 publications

References 28 publications

Interactions Between Sodium Ion and Constituents of Chitosan: DFT Study

Interactions Between Sodium Ion and Constituents of Chitosan: DFT Study

Synthesis and Characterization of Chitosan/Urea-Formaldehyde Hollow Resin for Metal Ion Removal

Preparation of polyvinyl alcohol/chitosan hydrogel compounded with graphene oxide to enhance the adsorption properties for Cu(II) in aqueous solution

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