Characterization of vine shoots, cotton stalks, Leucaena leucocephala and Chamaecytisus proliferus, and of their ethyleneglycol pulps

Jiménez, L.; Pérez, A.; Torre, María José de la; Moral, Ana; Serrano, Luís

doi:10.1016/j.biortech.2006.11.009

Cited by 59 publications

(41 citation statements)

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“…The fiber morphological characteristics of cotton stalk were similar to those of hardwood fibers, whereas those of cotton bast were similar to those of softwood fibers. The results were consistent with the reports of other literature (Jiménez et al 2007;Li 2007). The average length of cotton bast was nearly triple that of cotton stalk, and the length-to-width ratio was almost quadruple.…”

Section: Characterization Of Raw Materialssupporting

confidence: 93%

Alkaline Peroxide Extrusion Pulping of Cotton Bast and Cotton Stalk

Hu¹,

Nie²

2014

BioResources

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The chemical compositions of cotton stalk and bast are similar to those of hardwood and superior to those of grass fiber. With respect to the morphological characteristics of their fibers, cotton stalk is similar to hardwood and cotton bast is similar to softwood. The average length of cotton bast fibers is nearly triple that of cotton stalk fibers, and the length-to-width ratio is almost quadruple. Traditionally, cotton stalk and cotton bast are pulped together, which affects the quality and homogeneity of the pulp and complicates bleaching, limiting its use to low-grade paper. In this study, cotton bast and cotton stalk were separated and pulped individually by alkaline peroxide extrusion pulping (APEP). The orthogonal analytical method was used to determine the optimal pulping parameters. Compared to those obtained via the kraft pulp (KP) of cotton stalk as a whole, far superior yield and whiteness were obtained in APEP. Further, with APEP, lower amounts of chemicals and less energy were consumed and there was little pollution. The physical performance of APEP was slightly lower than that of KP. With respect to bast alone, the physical performance of APEP was almost as good as that of KP.

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Section: Characterization Of Raw Materialssupporting

confidence: 93%

Alkaline Peroxide Extrusion Pulping of Cotton Bast and Cotton Stalk

Hu¹,

Nie²

2014

BioResources

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“…The kappa number of the bleached pulps was 5, which corresponds to less than 1 % of residual lignin in the pulps. The overall conclusion to be deduced from this part; that despite the quite difference of composition element of vine stem when comparing with some annual plants [6,8,[35][36][37][38], this biomass remains an interesting cellulosic source and comparable with those of annual plant which justified also their advantages for use as derivatives fibers or as new absorbent materials. Figure 3 shows the FTIR spectra of extracted and bleached cellulose.…”

Section: Resultsmentioning

confidence: 92%

Synthesis and Characterization of Carboxymethyl Cellulose from Tunisian Vine Stem: Study of Water Absorption and Retention Capacities

et al. 2014

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The aim of this work was to study the effect of the degree of substitution (DS) and the purity of sodium carboxymethyl cellulose (CMCNa) prepared from Tunisian vine stem on the absorption and retention of water. Vine stem was first delignified using souda-anthraquione, then bleached and finally chemically modified, in order to synthesize different CMCNa derivatives. The carboxymethylation reaction was carried out in presence of NaOH (40 %) and monochloroacetic acid (ClCH 2 COOH), in n-butanol as a reaction solvent. The obtained CMCNa derivatives were characterized using different tools such as the DS, Fourier transforms IR techniques, CP-MAS 13 C-NMR, the exchange capacity as well as the determination of modification reaction yield. The performance of the prepared derivatives in term of absorption capacities and retention capacities was established. The performance of CMCNa derivatives was compared with that achieved by commercial counterparts and it was concluded that the prepared ones exerted higher efficiency.

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“…Chinea et al 2007), as a source of resistance to multiple stresses [see Guma et al (2010) and references therein] and as alternative pulping raw material for paper industry (e.g. Jiménez et al 2007).…”

Section: Resultsmentioning

confidence: 99%

Perennial forage legumes endemic to the Canary Islands: collection and ex situ conservation

Guma¹,

Santos‐Guerra²,

Reyes‐Betancort³

et al. 2010

Genet Resour Crop Evol

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Several perennial legumes endemic to the Canary Islands have been recognized as forage resources for semi-arid zones. In the period 2008-2010, seed collecting missions focused on the genera Adenocarpus DC., Bituminaria Heist. ex Fabr., Chamaecytisus Link, Cicer L., Genista L., Teline Medik. and Vicia L. were carried out in the archipelago. Sixty-nine samples were gathered from 31 endemic taxa, eight of which are threatened. These accessions are conserved at the gene bank of the Instituto Canario de Investigaciones Agrarias for further characterization and evaluation. Collection and ex situ conservation contribute to preserve endemic legumes genetic resources for utilization in the Canary Islands and in other semi-arid regions of the world.

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Characterization of vine shoots, cotton stalks, Leucaena leucocephala and Chamaecytisus proliferus, and of their ethyleneglycol pulps

Cited by 59 publications

References 1 publication

Alkaline Peroxide Extrusion Pulping of Cotton Bast and Cotton Stalk

Alkaline Peroxide Extrusion Pulping of Cotton Bast and Cotton Stalk

Synthesis and Characterization of Carboxymethyl Cellulose from Tunisian Vine Stem: Study of Water Absorption and Retention Capacities

Perennial forage legumes endemic to the Canary Islands: collection and ex situ conservation

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