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Investigation on the Application of the Organic Complex " Sulvy-x " in Peroxide Bleaching of Hornbeam CMP Pulp | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 9, Volume 26, Issue 1 - Serial Number 32, March 2011, Pages 117-127 PDF (166.89 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2011.117153 | ||
| Authors | ||
| Meisam Aliabadi* 1; Eiman Akbaepoor2; Ahmad reza Saraeian3 | ||
| 1M.Sc. Graduate of Pulp and Paper Industries, Gorgan University of Agricultural Sciences and Natural Resources | ||
| 2Ph.D Student of Pulp and Paper Industries, Gorgan University of Agricultural Sciences and Natural Resources. | ||
| 3Assistant Professor of Pulp and Paper Technology, Gorgan University of Agricultural Sciences and Natural Resources, Department of Wood and Paper Technology | ||
| Abstract | ||
| In this study, the effect of organic complex "sulvy-x" on the optical properties of hornbeam CMP pulp bleached with hydrogen peroxide was investigated. Sulvy-x was used in two sequences silicate-free and silicate containing in hydrogen peroxide bleaching. The brightness of papers increased to 60.52 and the yellowness decreased to 22.6 with increasing silicate charges up to 1% . However, at higher levels than 1% , the brightness decreased and the yellowness increased. Without dosage of sodium silicate but using 0.5% of sulvy-x, maximum brightness of 59.3% and minimum yellowness of 23.4 % ISO was achieved. In silicate-containing bleaching, combination of 0.5% sulvy-x and 0.7% sodium silicate resulted the highest brightness (60.28 % ISO) and the lowest yellowness (23 % ISO). Optimum charge of sodium hydroxide and hydrogen peroxide were determined as 2.5% and 5%.The best time for bleaching of hornbeam CMP pulp was 90 minutes in either sequences. With regard to results obtained, utilization of the organic complex of sulvy-x could be a suitable substitution for sodium silicate which produces the pulp with higher brightness and lower yellowness in conventional peroxide bleaching. | ||
| Keywords | ||
| Silicate-free bleaching; brightness; yellowness; Organic Complex of Sulvy-x | ||
| References | ||
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