Improving the use of kenaf for kraft pulping by using mixtures of bast and core fibers

Villar, Juan C.; Revilla, Esteban; Gómez, Nuria; Carbajo, José María; Simon, J.

doi:10.1016/j.indcrop.2008.06.002

Cited by 57 publications

(37 citation statements)

References 5 publications

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“…Kenaf plant can grow very fast, reaching a height of more than 3 m in 3 to 4 months (Villar et al 2009;Webber III and Bledsoe 2002). The annual yield of kenaf (whole stem) ranges between 12 and 30 tons ha -1 , which is three times the maximum yield of Pinus radiata, depending on cultivars, soil type, climate, etc.…”

Section: Introductionmentioning

confidence: 99%

“…The annual yield of kenaf (whole stem) ranges between 12 and 30 tons ha -1 , which is three times the maximum yield of Pinus radiata, depending on cultivars, soil type, climate, etc. (Villar et al 2009). Kenaf core comprises 60 to 65 wt% of the whole stem of kenaf plant (Pande et al 2000;Villar et al 2009).…”

Section: Introductionmentioning

confidence: 99%

“…(Villar et al 2009). Kenaf core comprises 60 to 65 wt% of the whole stem of kenaf plant (Pande et al 2000;Villar et al 2009). Kenaf plant is largely used for its bast fibers, which are superior in mechanical strength as compared to kenaf core.…”

Section: Introductionmentioning

confidence: 99%

“…Kenaf bast is known to be higher in length and mechanical strength and therefore more suited for high mechanical strength application such as reinforcement in composites (Ishak et al 2010), cordage, making ropes, paper pulp (Villar et al 2009), etc. Kenaf core wood was chosen because of its limited usage compared to bast fibers.…”

Section: Introductionmentioning

confidence: 99%

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Production and Characterisation of Cellulose and Nano-Crystalline Cellulose from Kenaf Core Wood

Chan¹,

Chia²,

Zakaria³

et al. 2012

BioResources

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Natural fibers such as kenaf have been studied extensively as a reinforcing phase and received major attention recently due to their renewability, biodegradability, and high strength comparable to other synthetic fibers. In this study, nano-crystalline cellulose (NCC) was produced from kenaf core wood using the acid hydrolysis method. Kenaf core was alkali treated with a 4 wt% of sodium hydroxide solution and subsequently bleached using sodium chlorite in acidic buffer. The resulting white, bleached kenaf core was hydrolyzed in 64 wt% sulfuric acid (H 2 SO 4 ) to obtain NCC. The resulting NCC suspension was characterized using X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) analysis, and scanning transmission electron microscope (STEM). Hydrolysis with highly concentrated H 2 SO 4 further increased the crystallinity of bleached kenaf core cellulose and reduced the dimension of cellulose to nano scale. FTIR results showed that with each subsequent treatment, hemicellulose and lignin were removed, while the chemical functionalities of cellulose remained after the acid hydrolysis treatment. XRD peaks shown by bleached kenaf core were characteristic of cellulose I, which was reaffirmed by the DSC results. The diameters of NCC obtained from kenaf core were found to be in the range of 8.5 to 25.5 nm with an average aspect ratio of 27.8.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Production and Characterisation of Cellulose and Nano-Crystalline Cellulose from Kenaf Core Wood

Chan¹,

Chia²,

Zakaria³

et al. 2012

BioResources

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“…Kenaf, crop-based fiber reported as an alternative source of wood for the pulp and paper production that have two distinctive stem regions, the outer portion or Bast is about 34 wt.% of the stem and inner, woody core, that is about 66 wt.% [9]. Kenaf bast fiber resembles long softwood fibers which could be used for high-grade pulps production [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on momentum and drag reduction of Malaysian crop suspensions in closed conduit flow

Ahmed

Kazi

K̲h̲ān

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The study of frictional losses in fiber suspension flow is one of the significant scientific interests as the characteristics of suspension flow considerably changes with shear stress, fiber source, and treatments applied on fibers. Pressure drop measurements were obtained for different Malaysian crop fiber suspensions flowing through a closed conduit. The generated data were gathered over a range of flow rates and suspension concentrations. It was found that the magnitude of the pressure drop of the fiber suspensions is dependent on the concentration, characteristics, and fiber source. Considerable drag reduction is obtained for concentration of 0.6 wt. % at high flow rates. Such a reduction of pressure drop at the particular concentrations and the flow rates is interesting and useful as these data can be used for design and optimization of fiber handling equipment and piping systems. Furthermore, the effect of different fibers, fiber properties and flexibility on pressure drop were studied.

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Hibiscus cannabinus

Shikha

Kashyap

Thakur

et al. 2023

Harvesting Food From Weeds

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Improving the use of kenaf for kraft pulping by using mixtures of bast and core fibers

Cited by 57 publications

References 5 publications

Production and Characterisation of Cellulose and Nano-Crystalline Cellulose from Kenaf Core Wood

Production and Characterisation of Cellulose and Nano-Crystalline Cellulose from Kenaf Core Wood

Experimental investigation on momentum and drag reduction of Malaysian crop suspensions in closed conduit flow

Hibiscus cannabinus

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