Structural characteristics of cell walls of kenaf (Hibiscus cannabinus L.) and fixation of carbon dioxide

Lam, Thi Bach Tuyet; Hori, Keko; Iiyama, Kenji

doi:10.1007/s10086-002-0469-7

Cited by 49 publications

(24 citation statements)

References 38 publications

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“…Kenaf bast fiber showed significantly high S/V ratio compared to the core fraction ( Table 2). The high S/V ratio of kenaf bast fiber is in agreement with the results in previous papers [2,4,6,22]. Fibers are divided into two large groups, xylary and extraxylary fibers, which exist in various tissue systems outside the xylem [1].…”

Section: Aromatic Characteristics Of Bast Fiber and Bark Ligninsupporting

confidence: 87%

“…Kenaf is an annual plant composed of bast and core [2]. Kenaf bast fiber has attracted a great deal of attention for its lignin characteristics: high syringyl to guaiacyl ratio in the aromatic composition of lignin [3][4][5][6][7][8]. Besides a high syringyl to guaiacyl ratio, kenaf bast fiber lignin is rich in arylglycerol-b-ether linkage with predominantly erythro diastereomer [4].…”

Section: Introductionmentioning

confidence: 99%

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Lignin characteristics of bast fiber and core in kenaf, bark and wood of paper mulberry and mulberry

Jin

Shao

et al. 2011

J Wood Sci

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The structural features of bast fiber and core lignins in kenaf (Hibiscus cannabinus), bark and wood lignin of paper mulberry (Broussonetia papyrifera (L.) Vent 9 Broussonetia kazinoki Sieb.) and mulberry (Morus bombycis) were characterized by alkaline nitrobenzene oxidation, ozonation and methoxyl group determination. Björkman lignins were isolated from bast fiber and core, and bark and wood fractions of the plant samples, and structural characteristics were investigated by 1 H NMR and 13 C NMR spectroscopies. Kenaf bast fiber gave very high molar ratio of syringaldehyde to vanillin (S/V) of alkaline nitrobenzene oxidation products, while methoxyl content was about the same as that of the core fraction. Results of 1 H NMR and 13 C NMR of Björkman lignin suggested the presence of aliphatic fragments in lignins isolated from paper mulberry and mulberry bark, but not in kenaf bast fiber. The lower yield of alkaline nitrobenzene oxidation products from bast fiber and bark might be due to the higher content of condensed structure of lignin compared to core fraction. Total yield of erythronic (E) and threonic (T) acids of ozonation products and the molar ratio of erythronic acid to threonic acid (E/T) of the bast fibers and bark were lower than the corresponding core and wood fractions, suggesting that the contents of arylglycerol-baryl ether intermonomer linkages in the bast fiber and bark lignin were lower than those of the core and wood fractions. Methoxyl content of bark lignin was lower than the corresponding wood lignin. The methoxyl content of the extract-free kenaf bast fiber was similar to that of the core fraction, while the values of paper mulberry and mulberry bark were about one-half of the corresponding wood fractions, respectively. In bark lignins, the methoxyl contents of Klason lignin and Björkman lignin from bark were lower than those of the extract-free barks. This result suggests that the purity of Klason lignin and Björkman lignins of bark may be rather low.Keywords Kenaf bast fiber and core Á Mulberry bark and wood Á E/T ratio Á S/V ratio Á Methoxyl group

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Section: Aromatic Characteristics Of Bast Fiber and Bark Ligninsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Lignin characteristics of bast fiber and core in kenaf, bark and wood of paper mulberry and mulberry

Jin

Shao

et al. 2011

J Wood Sci

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“…Kenaf has a significantly high ability to fixate CO 2 , and its photosynthesis speed is at least three times higher than that of usual plants. 6 It can absorb 1.4 times its own weight in CO 2 , and its carbon content is about 43%. 7 Kenaf has been used mainly for textiles, paper, and animal food, but composites of kenaf fiber and PLA 8,9 or composites of kenaf fiber and petroleumbased plastics 10 have been studied recently.…”

Section: Introductionmentioning

confidence: 99%

Kenaf‐fiber‐reinforced poly(lactic acid) used for electronic products

Serizawa

Inoue

Iji

2006

J of Applied Polymer Sci

203

107

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ABSTRACT:We have developed high-performance biomass-based plastics that consist of poly(lactic acid) (PLA) and kenaf fiber, which fixates CO 2 efficiently. Adding this fiber to PLA greatly increases its heat resistance (distortion temperature under load) and modulus and also enhances its crystallization, so the ease of molding this material is improved. Eliminating the short particles from the kenaf fiber improves its effect on the impact strength. Kenaf fiber without the particles exhibits effects on these characteristics of PLA practically comparable to the effects of glass fiber. Furthermore, adding a flexibilizer (a copolymer of lactic acid and aliphatic polyester) to the composites improves their strength. These composites (PLA/kenaf fiber and PLA/ kenaf fiber/flexibilizer) show good practical characteristics for housing materials of electronic products in comparison with petroleum-based plastics used in housing such as glassfiber-reinforced acrylonitrile-butadien-styrene (ABS) resin.

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“…1 Furthermore, it has been reported that kenaf has a significantly high ability to accumulate carbon dioxide, and its photosynthesis speed is at least three times higher than that of the usual plants, and it can absorb carbon dioxide 1.4 times its own weight. 25 Kenaf has been mainly used as textiles and paper for a long time, and recently composites of kenaf fiber (KF) and plastics have been studied owing to their promising properties. 12,13,26,27 Among the family of environmentally friendly biodegradable polymers, PCL has a good flexibility characterized by high fracture strain.…”

Section: Introductionmentioning

confidence: 99%

Kenaf fiber/poly(ε‐caprolactone) biocomposite with enhanced crystallization rate and mechanical properties

Pan

Zhu

Dong

et al. 2007

J of Applied Polymer Sci

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Plant-derived kenaf fiber (KF)-reinforced poly(e-caprolactone) (PCL) biocomposites were successfully fabricated by the melt mixing technique. The crystallization behavior, morphology, and mechanical and dynamic mechanical properties of PCL/KF composites with various KF weight contents were investigated. The crystallization rate, tensile and storage moduli significantly improved as compared to the virgin polymer. The half times of PCL/KF composite (20 wt % fiber content) in isothermal crystallization at 408C and 458C reduced to 31.6% and 42.0% of the neat PCL, respectively. Moreover, the tensile and storage modulus of the composite are improved by 146% and 223%, respectively, by the reinforcement with 30% KF. The morphology evaluated by SEM indicates good dispersion and adhesion between KF and PCL. Overall, these findings reveal that KF can be a potential reinforcement for the biodegradable polymer composites owing to its good ability to improve the mechanical properties as well as crystallization rate.

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Structural characteristics of cell walls of kenaf (Hibiscus cannabinus L.) and fixation of carbon dioxide

Cited by 49 publications

References 38 publications

Lignin characteristics of bast fiber and core in kenaf, bark and wood of paper mulberry and mulberry

Lignin characteristics of bast fiber and core in kenaf, bark and wood of paper mulberry and mulberry

Kenaf‐fiber‐reinforced poly(lactic acid) used for electronic products

Kenaf fiber/poly(ε‐caprolactone) biocomposite with enhanced crystallization rate and mechanical properties

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