Electron-beam stimulation of the reactivity of cellulose pulps for production of derivatives

Iller, E.; Kukiełka, Aleksandra; Stupińska, H.; Mikołajczyk, Włodzimierz

doi:10.1016/s0969-806x(01)00646-6

Cited by 50 publications

(39 citation statements)

References 5 publications

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“…In these studies, it has been shown that the decrease in fibre strength is caused by the depolymerization of cellulose. A correlation has been established between the decrease in degree of polymerization (DP) and the irradiation dosage (Muto et al 1995;Taba´cs et al 2000;Iller et al 2002), irrespective of the nature of the medium (acidic, alkaline, solvent or in dry state) (Ducha´cˇek and Blud'ovsky 1979). A linear relationship is found between the number of cellulose chain scissions and the dosage (McLaren 1978).…”

Section: Introductionmentioning

confidence: 99%

“…A linear relationship is found between the number of cellulose chain scissions and the dosage (McLaren 1978). Moreover, a correlation exists between the concentration of free radicals formed in irradiated pulp and irradiation dosage (Iller et al 2002). At lower doses (<10 kGy) crosslinking was observed (Pruzinec et al 1981) while at higher doses, degradation by chain scission predominates (Charlesby 1960).…”

Section: Introductionmentioning

confidence: 99%

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The effects of ionizing radiation on the cellulose of woodfree paper

2006

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There is presently a concern because the US Postal Service now has 8 electron beam accelerators to treat mail in locations along the east coast and that a sufficient dosage to destroy Anthrax is also strong enough to darken and weaken the paper in the postal envelopes. In addition to direct photolytic scission of the cellulose chain, irradiation darkens paper, swells pulp fibres, increases hygroscopicity, and renders the cellulose more soluble in alkaline solution and more susceptible to acid hydrolysis. This report will focus on the effect of electron beam irradiation on degradation of cellulose of fine papers. Three reference papers were selected, sorted into postal envelopes and exposed to electron beam irradiation. The results have shown that irradiation at the dosage used to treat mail by the US Postal Service depolymerizes and oxidizes the cellulose. Depolymerization is responsible for a decrease of paper strength while oxidation induces darkening of the paper. Irradiating at high electron beam energy is less damaging than using lower energy. Moreover, linear relationships have been found between the number of chain scission (CSN) in cellulose and the irradiation dosage as well as between CSN and Zero-Span Breaking Length. These relationships make the strength loss predictable.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effects of ionizing radiation on the cellulose of woodfree paper

2006

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“…Particularly, the high density EB treatment of polypropylene (PP) was found to promote the formation of oxygen-containing groups (mainly C=O) on the polymer surface and enhancement of PP compatibility with hydrophilic inorganic materials (El-Naggar et al, 2005;Ibrahim, Salmawi, & Ibrahim, 2005;Iller, Kukie ka, Stupi ska, & Miko ajczyk, 2002;Kondo et al, 2006;Leonhardt, Muratore, & Walton, 2004;Mahapatra, Bodas, Mandale, Gangal, & Bhoraskar, 2006;Timusa, Cincub, Bradleyc, Craciuna, & Mateescua, 2000;Vasiljeva, Mjakin, Makarov, Krasovsky, & Varlamov, 2006;Zagórski, 2004;Zsigmond, Halasz, & Czvikovszky, 2003). I.S.…”

Section: Effect Of Electron Irradiation On Printability Of Polypropylmentioning

confidence: 99%

Effect of Plasma on Dyeability of Fabrics

Shahidi¹,

Ghoranneviss²

2011

Textile Dyeing

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“…Textile pulps [35] Alicell ( The corn stalk produced at a few tons per hectare which could be bought and transported to mill at a very low price. Pulping of non-wood fibers with effluent of the Merox unit demands no chemical charge due to the proper chemical composition of waste water.…”

Section: Degree Of Polymerizationmentioning

confidence: 99%