Synthesis and characterization of cellulose/silica hybrid materials with chemical crosslinking

Xie, Kongliang; Yu, Yanhong; Shi, Yaqi

doi:10.1016/j.carbpol.2009.06.019

Cited by 105 publications

(48 citation statements)

References 30 publications

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“…Recently, much attention has been directed to the development of nanocomposites based on organic-inorganic hybrid materials, such as SiO 2 (Pinto et al 2008), CaCO 3 (Vilela et al 2010), NbOPO 4 ·nH 2 O (Pereira et al 2010,), Nb 2 O 5 (Maschio et al 2012), MgO (Maliyekkal et al 2010), silica (Xie et al 2009), TiO 2 (Daoud et al 2005), Al 2 O 3 (Alfaya and Gushikem 1999), ZrO 2 (Mulinari and Da Silva 2008), Cel/Sb 2 O 3 (Toledo et al 2000), and other applications such as membranes (Biron et al 2012), because these materials normally have improved mechanical, optical, and thermal properties due to the combination of inorganic and organic components.…”

Section: Introductionmentioning

confidence: 99%

Chemical Modification of Palm Fibres Surface with Zirconium Oxychloride

2013

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Chemical modification of natural fibres has been carried out using different methods for such purposes as reinforcement in polymer matrices and heavy metals adsorption. In this work, palm fibres were modified by zirconium oxychloride in situ. The palm fibres that had been chemically modified were compared to those in nature using fibres that passed through 20 and 40 mesh screens to evaluate the influence of particle size on modification. Palm fibres were modified with ZrO 2 .nH 2 O nanoparticles through the use of zirconium oxychloride in an acidic medium in the presence of palm fibres using ammonium solution (1:3) as the precipitating agent. Scanning electron microscopy (SEM), X-ray diffraction (XRD), infrared spectrophotometry (FTIR), and atomic emission spectrometry with inductively coupled plasma (ICP-AES) were used to characterize the hybrid materials. Results indicated that the particle size of the palm fibres influenced in the modification, because the fibres with smaller particle size had a greater deposition of inorganic material. The ICP technique revealed an increase of 21% nanoparticles ZrO 2 .nH 2 O deposited on fibres (40 mesh) when compared to fibres (20 mesh). The diameter of nanoparticles ZrO 2 .nH 2 O deposited on fibres was about 50 to 220 nm, as observed by SEM.

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Section: Introductionmentioning

confidence: 99%

Chemical Modification of Palm Fibres Surface with Zirconium Oxychloride

2013

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“…This situation is caused by the formation of hydrogen bonding between organic phase and inorganic phase during the sol-gel reaction [15], where this property would benefit the crude glycerol purification process as water soluble material could permeate through the membrane. TFC with F3 as the barrier layer shows the best performance in term of rejecting higher percentage of NaCl by allowing higher percentage of glycerol passing through the TFC.…”

Section: Antifouling Performancementioning

confidence: 99%

Thin Film Composite Membranes: Mechanical and Antifouling Properties

et al. 2017

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Abstract. As compared to membranes produced from pure polymer or pure inorganic materials, a hybrid membrane possesses better mechanical and thermal properties. This paper reported on the effect of incorporating silica nano-precursor (tetraethylorthosilicate) as well as glycerol in the formulation of hybrid membrane on the mechanical properties and antifouling properties of the resultant thin film composite membranes. The mechanical properties were measured in terms of tensile strength, tensile strain and elastic modulus. Whereas for antifouling properties, it was evaluated through the measurements of relative flux decay (RFD) and relative flux recovery (RFR), along with the permeate flux rate, percentage glycerol permeated and NaCl rejection. Results showed that the presence of silica and glycerol in hybrid membrane's formulation had increased the tensile strength and elongation of the resultant membranes. In addition to that, the incorporation of glycerol has resulted in thin film composite with better antifouling properties as compared to the thin film composite with barrier layer from the pure polymer blend. Based on its performance, the fabricated thin film composite has a great potential to be used as a pathway for crude glycerol purification due to some advantages over the existing process that employ membrane.

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“…the main organic elements in the hybrid materials are different natural and synthetic polymers such as cellulose derivatives (23), chitosan (2), gelatine (19), polymethylmetacrylate, polyvinyl alcohol, etc. (13).…”

Section: Introductionmentioning

confidence: 99%