Preparation of Bacterial Cellulose/Inorganic Gel of Bentonite Composite by In Situ Modification

Wang, Bo; Qi, Gaoxiang; Huang, Chao; Yang, Xiaoyan; Zhang, Hairong; Luo, Jun; Chen, Xuefang; Chen, Xinde

doi:10.1007/s12088-015-0550-8

Cited by 14 publications

(7 citation statements)

References 34 publications

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“…Both, BC and graphene have been used in the development of adsorbent devices for water purification. BC has been shown to be able to receive guest molecules or inorganic particles [91][92][93]. BC nanocomposites and hybrid materials have been reported as adsorbent materials, especially for heavy metals [94][95][96][97].…”

Section: Sorbent Nanocomposites For Water Purificationmentioning

confidence: 99%

Bacterial Cellulose—Graphene Based Nanocomposites

Troncoso

Torres

2020

IJMS

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Bacterial cellulose (BC) and graphene are materials that have attracted the attention of researchers due to their outstanding properties. BC is a nanostructured 3D network of pure and highly crystalline cellulose nanofibres that can act as a host matrix for the incorporation of other nano-sized materials. Graphene features high mechanical properties, thermal and electric conductivity and specific surface area. In this paper we review the most recent studies regarding the development of novel BC-graphene nanocomposites that take advantage of the exceptional properties of BC and graphene. The most important applications of these novel BC-graphene nanocomposites include the development of novel electric conductive materials and energy storage devices, the preparation of aerogels and membranes with very high specific area as sorbent materials for the removal of oil and metal ions from water and a variety of biomedical applications, such as tissue engineering and drug delivery. The main properties of these BC-graphene nanocomposites associated with these applications, such as electric conductivity, biocompatibility and specific surface area, are systematically presented together with the processing routes used to fabricate such nanocomposites.

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Section: Sorbent Nanocomposites For Water Purificationmentioning

confidence: 99%

Bacterial Cellulose—Graphene Based Nanocomposites

Troncoso

Torres

2020

IJMS

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“…Fitting models to the linear portion of flow curves, using the power law Z ¼ K _ g m (where h is viscosity, _ g is the shear rate, K is the flow consistency index and m is the flow behaviour index) can give quantitative information about the systems for comparison [32] (see also description in Supporting information, page [15][16][17]. S1 Table in the S1 File shows the best-fits for each combination of Laponite or montmorillonite with OCNF.…”

Section: Shear Thinningmentioning

confidence: 99%

“…Similarly, clays offer an environmentally friendly method of rheological modification [4][5][6]. Previous research examined the combination of clays and cellulose to produce films [7][8][9], papers [10][11][12], hydrogels [13], and nanocomposites [14][15][16]. In the case of films, addition of clay led to increased tensile strength [7], and oxygen barrier properties [9].…”

Section: Introductionmentioning

confidence: 99%

Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays

et al. 2021

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This study aimed to quantify the influence of clays and partially oxidised cellulose nanofibrils (OCNF) on gelation as well as characterise their physical and chemical interactions. Mixtures of Laponite and montmorillonite clays with OCNF form shear-thinning gels that are more viscous across the entire shear range than OCNF on its own. Viscosity and other rheological properties can be fine-tuned using different types of clay at different concentrations (0.5–2 wt%). Laponite particles are an order of magnitude smaller than those of montmorillonite (radii of 150 Å compared to 2000 Å) and are therefore able to facilitate networking of the cellulose fibrils, resulting in stronger effects on rheological properties including greater viscosity. This work presents a mechanism for modifying rheological properties using renewable and environmentally-friendly nanocellulose and clays which could be used in a variety of industrial products including home and personal care formulations.

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“…Bacterial cellulose (BC) is a kind of cellulose commonly used in food, specialty paper, speaker membranes and biomedical applications [15,16,17]. Compared with cellulose, BC has many excellent properties such as a high degree of crystallinity, high purity and high mechanical properties (Young’s modulus of BC fiber is as high as 114 GPa).…”

Section: Introductionmentioning

confidence: 99%

Transcrystallization of Isotactic Polypropylene/Bacterial Cellulose Hamburger Composite

Wang

Lin

et al. 2019

Polymers

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Isotactic polypropylene (iPP) is a commonly used thermoplastic polymer with many excellent properties. But high brittleness, especially at low temperatures, limits the use of iPP. The presence of transcrystallization of iPP makes it possible for fiber-reinforced iPP composites with higher strength. Bacterial cellulose (BC) is a kind of cellulose with great potential to be used as a new filler to reinforce iPP due to its high crystallinity, biodegradability and efficient mechanical properties. In this study, the iPP/BC hamburger composite was prepared by a simple hot press and maleic anhydride grafted polypropylene (MAPP) was used to improve the interface compatibility of iPP and BC. The polarizing microscope (POM) photograph shows that BC successfully induces the transcrystallization of iPP. The differential Scanning Calorimeter (DSC) date proves that the addition of BC could improve the thermal properties and crystallization rate of the composite. Especially, this change is more obvious of the iPP/MAPP/BC. The mechanical properties of the iPP/BC composites were greatly increased. This DSC date is higher than BC; we used BC particles to enhance the iPP in our previous research. The scanning Electron Microscope (SEM) analysis intuitively shows that the interface of the iPP/MAPP/BC is more smooth and flat than the iPP/BC. The fourier Transform infrared spectroscopy (FT-IR) analysis of the iPP/BC hamburger composites was shown that a new C=O group vibration appeared at 1743 cm−1, which indicated that the hydrogen bond structure of BC molecules was weakened and some hydroxyl groups were substituted after modification which can increase the lipophilicity of BC. These results indicated that the BC fiber can easily induce the transcrystallization of iPP, which has excellent mechanical properties. Moreover, the addition of MAPP contributes greatly to the interface compatibility of iPP and BC.

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Preparation of Bacterial Cellulose/Inorganic Gel of Bentonite Composite by In Situ Modification

Cited by 14 publications

References 34 publications

Bacterial Cellulose—Graphene Based Nanocomposites

Bacterial Cellulose—Graphene Based Nanocomposites

Rheological modification of partially oxidised cellulose nanofibril gels with inorganic clays

Transcrystallization of Isotactic Polypropylene/Bacterial Cellulose Hamburger Composite

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