Chitosan macroporous asymmetric membranes—Preparation, characterization and transport of drugs

Santos, D. E. S. dos; Neto, C.G. da Trindade; Fonseca, J. L. C.; Pereira, M.R.

doi:10.1016/j.memsci.2008.07.050

Cited by 45 publications

(22 citation statements)

References 31 publications

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“…For porous membranes, it can be seen that the largest average size pores (8.5 μm) of CA2.0S8N significantly increased the average water uptake percentage (146.4%). The increase of the water uptake percentage as the pore size increased, proved the water-filled porous nature of membranes, whereby water is transported through the channels (pores) [11]. However, for CA3.0S8N and CA4.0S8N, the average water uptake percentage decreased (102.6 and 40.9%) as the average size of the pores decreased (7.3 and 4.0 μm), confirming that the ability of water to fill up the membrane pores was highly dependent on the average pore size.…”

Section: Porous Ca-sio 2 Membranes: Water Uptake Analysismentioning

confidence: 99%

“…Several studies have also focused on the production of porous chitosan membranes using porogen agents [10][11][12]. The removal of porogen agents, such as silica (SiO 2 ), from the polymeric membrane could create $ 20-32 μm pores [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…The removal of porogen agents, such as silica (SiO 2 ), from the polymeric membrane could create $ 20-32 μm pores [13][14][15]. However, applications of porous chitosan based on the porogen removal method were mostly limited to medical purposes [11,16], until the method was adopted in the fabrication of fuel cell and batteries [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Porous membrane based on chitosan–SiO2 for coin cell proton battery

Alias

Ariff

Mohamad

2015

Ceramics International

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Section: Porous Ca-sio 2 Membranes: Water Uptake Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Porous membrane based on chitosan–SiO2 for coin cell proton battery

Alias

Ariff

Mohamad

2015

Ceramics International

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“…The addition of silica and PEG into chitosan membrane (Ch) resulted in the pores increases. The calculation of the value of the pore size distribution using SEM photograph with a computer program Image J as performed by [11], [12]. Ch/Si/P membrane has an average value of pore size 1.9 µm.…”

Section: A Characteristics Membranementioning

confidence: 99%

Porous Chitosan-silica-polyethylene Glycol Membrane for Dynamic Adsorption of Binary Mixtures Cu(II) and Zn(II) Ions

Mahatmanti¹,

Nuryono²,

Narsito³

2017

IJMMM

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Abstract-The adsorption of binary mixtures of Cu(II) and Zn(II) ions was studied using dynamic methods employing chitosan-silica-polyethylene glycol (Ch/Si/P) as adsorptive membrane. Ch/Si/P membrane was synthesized by blending rice hull ash (RHA) silica and polyethylene glycol into chitosan. Silica and polyethylene glycol blended into the Ch to improve the mechanical properties and the membrane porous. The membrane was characterized using mechanical properties test, scanning electron microscopy (SEM) and swelling test. Dynamic adsorption experiments suggested that the adsorption capacity depended on adsorbent morphology and differences concentration between the source phase and the stripping phase. Ch/Si/P membrane presented more affinity for Cu(II) than for Zn(II). The decrease of the amount of metal adsorbed onto Ch/Si/P membrane in binary system showed that the competition effects between two metal ions. The desorption was also investigated, Cu(II) and Zn(II) ions could be selectivity permeated using a process by water, HCl, and Na2EDTA solution as the stripping phase.Index Terms-Chitosan, membrane, dynamic adsorption, Cu(II) and Zn(II).

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“…To increase the porosity of chitosan membranes, porogens such as NaCl or silica gel can be added to the casting solution. After membrane preparation, differences in the solubility of porogens compared to chitosan in some agents like water or sodium hydroxide allow the porogen to be dissolved [16,[20][21][22][23][24]. Beppu et al [16] examined the effect of porosity (calculated by water sorption) in chitosan membranes functionalized with histidine and found out that membranes with higher porosity showed increased capacities of Cu(II) adsorption.…”

Section: Nomenclaturementioning

confidence: 99%