A comparative study of the effect of refining on physical and electrokinetic properties of various cellulosic fibres

Bhardwaj, Nishi Kant; Hoàng, Việt Nguyễn; Nguyen, Kien Loi

doi:10.1016/j.biortech.2006.05.040

Cited by 50 publications

(32 citation statements)

References 11 publications

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“…The population of ionisable groups depends on the origin of the fibers and on chemical treatments such as pulping and bleaching (Bhardwaj et al 2007). The total charges of the unbleached and bleached fibers are presented in Fig.…”

Section: Fiber Total Charge and Superficial Chargementioning

confidence: 99%

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Fiber Surface and Paper Technical Properties of Eucalyptus globulus and Eucalyptus nitens Pulps after Modified Cooking and Bleaching

Antes¹,

Joutsimo²

2015

BioResources

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The SuperBatch™(SB), CompactCooking™(CC), and Lo-Solids™ (LS) modified cooking methods were evaluated relative to the cell wall surface and paper technical properties of bleached Eucalyptus globulus and Eucalyptus nitens. E. globulus pulps presented higher screened yield and brightness than E. nitens, which needed higher H-factor to reach a kappa number target. Independently of the cooking method or species, all the samples consumed similar amounts of ClO2 to reach a brightness of 90% ISO. E. nitens pulps showed lower carbohydrates and higher extractives content on the fiber surface, regardless of the cooking method. E. nitens presented slightly higher surface charge of the bleached pulps. Surface charges of CC and LS pulps were higher independently of cooked Eucalyptus species. Water retention value (WRV) for E. nitens pulps were higher than for E. globulus. No differences were observed in refinability of different cooking methods, however E. nitens pulps showed higher tensile and lower bulk compared to E. globulus. E nitens presented a thinner fiber cell wall than E. globulus. This seems to be more relevant for paper technical properties and WRV than fiber charge or surface composition. No correlation between surface composition, fiber surface properties, and paper technical properties among the cooking methods could be determined.

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Section: Fiber Total Charge and Superficial Chargementioning

confidence: 99%

“…Similar values have been reported in the literature for Eucalyptus sp. (Bhardwaj et al 2007). The WRV values of the pulps are shown in Fig.…”

Section: Fiber Total Charge and Superficial Chargementioning

confidence: 99%

Fiber Surface and Paper Technical Properties of Eucalyptus globulus and Eucalyptus nitens Pulps after Modified Cooking and Bleaching

Antes¹,

Joutsimo²

2015

BioResources

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“…These fibrils increased the surface area of fibre (allowing better interaction between fibres), as well as increased hydrogen bonding and filled empty spaces (González et al 2012). Beating increases the surface charge and specific surface area, thus enhancing paper fibre-to-fibre bonding (Bhardwaj et al 2007, Banavath et al 2011, González et al 2012. Masrol et al (2015a) reported that fibre arrangement and bonding of durian rind pulp Values are means ± standard deviations produced by chemi-mechanical pulping process were not uniform, not straight and had some kinks and crimps compared with soda-AQ pulp.…”

Section: Image Analysismentioning

confidence: 99%

Durian Rind Soda-Anthraquinone Pulp and Paper: Effects of Elemental Chlorine-Free Bleaching and Beating

SR¹,

MHI²,

Adnan³

et al. 2018

JTFS

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A study was conducted to investigate the preliminary characteristics of soda-anthraquinone (soda-AQ) durian rind waste pulp and paper with the effects of elemental chlorine-free (ECF) bleaching and beating revolutions. Pulping was carried out using rotary digester with 0.1% antraquinone, 20% active alkali (NaOH), cooking time of 120 min and temperature of 170 °C. ECF bleaching with chlorine dioxide -alkali extraction -chlorine dioxide -alkali extraction -peroxide sequence and beating in the range of 0 to 1000 revolutions were applied to the unbeaten and unbleached pulp. ECF bleached pulp produced soda-AQ durian rind paper with greater tensile index, burst index, tear index, number of folds, brightness and scattering coefficients, but with slightly lower opacity compared with paper made from unbleached pulp. The results also showed that beating revolutions improved the overall physical and mechanical characteristics of durian rind soda-AQ pulp. Bleaching and beating enhanced the durian rind soda-AQ pulp fiber-to-fiber bonding and strength. Durian rind has potential characteristics as promising new material for papermaking.Keywords: Soda-AQ, refining, chlorine dioxide, alkali extraction, unbeaten and unbleached pulp, EFC bleaching al. 2013). These wastes have huge potential in the paper industry, but they have not been commercially exploited (Requejo et al. 2012). Hence, economical utilisation of these large amounts of agricultural wastes as raw material for pulp and paper industry would be beneficial.In addition to Thailand and Indonesia, Malaysia is one of the major durian flesh exporters. The aril comprises between 15 and 30% of the mass of the fruit (Brown 1997). One durian fruit has approximately 60 to 75% durian skin fibre (Nur Aimi et al. 2014). In 2014, 75,370 ha areas were planted with durian and these produced 373,565 t of fruits (Anonymous 2015). Disposal of massive amounts of peels has caused problems in the community (Hameed & Hakimi 2008 (Charoenvai et al. 2005), and absorbent materials (Mohammed et al. 2012). Perdinan et al. (2014) produced durian rind paper which consisted of durian rind soda pulp, starch and alkyl ketene dimer sizing agent. However, the physical characteristics of the paper did not fulfil the basic specifications for plastic laminated wrapping paper, as outlined by the SNI 14-6519 (SNI 2001). Durian skin fibre has great future potential and suitability for packaging due to its renewable and biodegradable properties and cost-effectiveness (Nur Aimi et al. 2014). Durian rind unbleached pulp produced via chemi-mechanical pulping has great potential for papermaking (Masrol et al. 2015a). Hence, other types of pulping such as chemical sodaanthraquinone (soda-AQ) pulping and various bleaching and beating processes are proposed to improve the characteristics of durian rind pulp produced via chemi-mechanical pulping.Soda-AQ, a common chemical pulping method, is mainly suitable for non-wood fibres. Soda-AQ pulp produces the highest content of alpha-cellulose and has the highest viscosity ...

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“…This enhancement is ascribed to the increase in the bonded area of sheet resulting from internal and external fibrillation that occurs during beating. Bhardwaj et al (2007) studied the influence of refining on physical and electrokinetic properties of various cellulosic fibers and found that beating increases the surface charge, specific surface area and specific volume of fibers, but did not change the total fiber charge. When beating to the same freeness, the pine kraft pulp had higher surface charge, surface area, and specific volume than eucalyptus pulps.…”

Section: Beatingmentioning

confidence: 99%

A Review of Literatures Related of Using Kenaf for Pulp Production (Beating, Fractionation, and Recycled Fiber)

Mossello¹,

Harun²,

Tahir³

et al. 2010

MAS

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This paper reviews several empirical studies which highlight the using of kenaf for pulp production (beating, fractionation, and recycled fiber). Kenaf is a non-wood pulp source that is alreadly used in parts of the world. Review studies showed that being a dicotyledonous plant, kenaf stem consists of bast and core fibers that are significantly different in chemical and morphological properties. Fiber properties directly influence pulping conditions applied in pulp and papermaking production. Kenaf fibers due to different nature and structure exhibit different behavior during pulping and papermaking. Core pulp due to presence of components with a high surface area coming from pith has low freeness and enhance susceptibility to refining action and pulp rapidly attains freeness value that are quite prohibitive for practical purposes. These short comings restrict the use of core pulp, which probably better used as unrefined. On the contrary, bast pulp refines easily and develops its strength. Due to difference in the quality of bast and core fiber, some researchers have proposed to fiber separation and pulping of each fraction separately and using each pulp lonely or blending refined bast pulp and unrefined core based on final product properties. These review results showed that, there is promised to use of kenaf as whole stem (bast and core together) for technical and economical advantages.

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A comparative study of the effect of refining on physical and electrokinetic properties of various cellulosic fibres

Cited by 50 publications

References 11 publications

Fiber Surface and Paper Technical Properties of Eucalyptus globulus and Eucalyptus nitens Pulps after Modified Cooking and Bleaching

Fiber Surface and Paper Technical Properties of Eucalyptus globulus and Eucalyptus nitens Pulps after Modified Cooking and Bleaching

Durian Rind Soda-Anthraquinone Pulp and Paper: Effects of Elemental Chlorine-Free Bleaching and Beating

A Review of Literatures Related of Using Kenaf for Pulp Production (Beating, Fractionation, and Recycled Fiber)

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