Research on the Preparation and Desiliconization Process of Wheat Straw Microcrystalline Cellulose

Zhang, Meiyun; Zhang, Yun; Li, Jinbao; Zhang, Bokun

doi:10.1166/jbmb.2011.1147

Cited by 4 publications

(4 citation statements)

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“…On the basis of the single factor experimental results from previous studies (Zhang et al 2012;Li et al 2013), a four-factor three-level response CCD, which required 27 runs (3 replicates of the central runs, 8 stars (2 n ), and 16 factorial runs by 2 n , n = 4) was used to optimize the FeCl 3 acid hydrolysis of cellulose for MCC. Table 1 shows the range of the independent variables and experiment design levels used in this study.…”

Section: Central Composite Design (Ccd)mentioning

confidence: 99%

Optimization of Selective Acid Hydrolysis of Cellulose for Microcrystalline Cellulose using FeCl3

Li¹,

Zhang²,

Zhang³

et al. 2014

BioResources

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In the process of acid hydrolysis of cellulose, hydrolyzing the amorphous regions while retaining the crystalline regions is the key technology for obtaining microcrystalline cellulose products. This paper investigated the influence of FeCl 3 on selective acid hydrolysis of crystalline regions and amorphous regions of cellulose. X-ray diffraction data indicated that FeCl 3 can enhance the selectivity of acid hydrolysis for amorphous regions of cellulose, thus improving the crystallinity of hydrocellulose. Meanwhile, the crystalline structure did not change. Response surface methodology (RSM) was employed to optimize the crystallinity of hydrocellulose with respect to FeCl 3 concentration, HCl concentration, reaction time, and temperature, and the relevant mathematical regression equation model was established. Under optimal conditions, the crystallinity of hydrocellulose was as high as 63.59% at 88.28 °C, 2.46 M HCl, 0.4 M FeCl 3 , and reaction duration of 64.02 min, which was in agreement with the predicted value.

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Section: Central Composite Design (Ccd)mentioning

confidence: 99%

Optimization of Selective Acid Hydrolysis of Cellulose for Microcrystalline Cellulose using FeCl3

Li¹,

Zhang²,

Zhang³

et al. 2014

BioResources

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“…Compared to conventional cellulose, the larger specific surface area and stronger intermolecular hydrogen bonding force make it more suitable as a membrane material. The preparation methods of MCC mainly include acid hydrolysis [ 22 , 23 ], alkaline hydrolysis [ 24 ], enzymatic hydrolysis, and combined methods [ 25 ], etc. Among them, the acid hydrolysis method has achieved widespread use, due to the advantages of mature technology, simple operation, and low operating costs.…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation and Properties of Jute Microcrystalline Cellulose Membrane

Liang

et al. 2023

Molecules

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The preparation and performance control of the cellulose membrane are one of the hot topics in the environmentally friendly separation membrane field. In this study, microcrystalline cellulose (MCC) was prepared by microwave-assisted acidic hydrolysis of cellulose obtained from jute, followed by the use of a mixture of N-methylmorpholine-N-oxide and water as a solvent to obtain the homogeneous casting liquid, which was scraped and subsequently immersed in the coagulation bath to form a smooth and dense cellulose membrane. During membrane formation, the crystal structure of MCC changed from type I to type II, but the chemical structure remained unchanged. The mechanical strength and separation performance of the membrane were related to the content of MCC in the casting liquid. When the content of MCC was about 7%, the tensile strength of the membrane reached a maximum value of 13.49 MPa, and the corresponding elongation at break was 68.12%. The water flux (J) and rejection rate (R) for the bovine serum albumin were 19.51 L/(m2·h) and 95.37%, respectively, under an optimized pressure of 0.2 MPa. In addition, the coagulation bath had a significant effect on the membrane separation performance, and J and R were positively and negatively correlated with the polarity of the coagulation bath. Among them, it was note-worthy that J and R of membrane formed in ethanol were 33.95 L/(m2·h) and 91.43%, separately. Compared with water as a coagulation bath, J was increased by 74% at the situation and R was roughly equivalent, showing better separation performance. More importantly, the relationship between the structure and separation performances has also been studied preliminarily. This work provides certain guidance for the preparation of high-performance MCC membranes.

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“…Carboxyl and sulfonic group can improve the technical performance of formulate frilling fluid by forming a thick solvation layer on the polymer chains, which help to stabilize the colloid and enhance salt tolerance, temperature resisting and anti-pollution.1 However, the thermal instability of ligninsulfonate makes it ineffective at high temperature. So ferric and chromium were introduced into the complex to improve the hydration and temperature resistance [6,7]. But from the environmental point view of appropriate drilling fluid, the Cr(III) is persistent toxic to aquatic species, which makes these additives environmental unacceptable, so the application is forbidden now.…”

Section: Introductionmentioning

confidence: 99%

Development of a New Drilling Fluid Additive from Lignosulfonate

Zhang

Chen

Yang

2012

AMR

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Nitration-oxidation lignosulfonate (NOLS) was prepared using lignosulfonate (LS) as raw material. The product was characterized by Fourier Transform Infrared spectroscopy (FT-IR). The performance as a drilling fluid additive was evaluated with regard to rhology, filtration and temperature resistance. The results showed that NOLS can improve the viscosity under room temperature, decrease the viscosity under high temperature and reduce the filtration more effectively than that of lignosulfonate, which display its good temperature resistance. So NOLS may be used as sustained release nitrogen fertilizer in agriculture as it was abandoned after the drilling process.

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Research on the Preparation and Desiliconization Process of Wheat Straw Microcrystalline Cellulose

Cited by 4 publications

References 0 publications

Optimization of Selective Acid Hydrolysis of Cellulose for Microcrystalline Cellulose using FeCl3

Optimization of Selective Acid Hydrolysis of Cellulose for Microcrystalline Cellulose using FeCl3

Study on the Preparation and Properties of Jute Microcrystalline Cellulose Membrane

Development of a New Drilling Fluid Additive from Lignosulfonate

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