INVESTIGATION UPON DISSOLVING PULP. PART VI
نویسندگان
چکیده
منابع مشابه
Preparation of Bamboo Dissolving Pulp for Textile Production. Part 1. Study on Prehydrolysis of Green Bamboo for Producing Dissolving Pulp
Prehydrolysis was used as the first treatment of bamboo materials for producing high dissolving pulp for textile applications. In this paper, green bamboo (Dendrocalamopsis oldhami) was hydrolyzed in water, and the hydrolysis process was optimized. The morphology and super-molecular structures of the raw material and prehydrolyzed material were studied by SEM and XRD, respectively. Based on the...
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Commercial bamboo chips were evaluated as raw material for dissolving pulp production. The chips were auto-hydrolyzed (AH) and subsequently cooked by the NaOH/AQ process and bleached to full brightness with the O-CCE-D-(EP)-D-P sequence. The term CCE designates a cold caustic extraction stage. The bamboo chip chemistry (22.4% lignin, 19.5% xylans, 49.3% cellulose, 16.8% total extractives, and 1...
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Corn stalk can be used as an alternative non-wood raw material to produce cellulosic dissolving grade pulp. In this work, the potential of corn stalk in the production of dissolving pulp (alpha-cellulose) was investigated. It was collect ed from a corn stalk farm of Kermanshah, Iran. The sequences of experimental work were: water and acid prehydrolysis at 160˚C for 30min, followed by Kraft pulp...
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A high reactivity is an essential prerequisite for dissolving pulp. In this study, xylanase modification to increase the reactivity of bamboo dissolving pulp was investigated. The original reactivity of a bamboo dissolving pulp prepared by a prehydrolysis kraft pulping process and bleached by (OP)-H-P (oxygen delignification enhanced with peroxide sodium hypochlorite peroxide) is very low. The ...
متن کاملDissolving Ambiguities in UML Whole-Part Relationships
The Unified Modeling Language is the software industry standard for OO graphical modeling languages. However, it does not adequately encompass the meronymic (whole-part) relationships. This paper provides an extension to the UML definition to include the excluded meronymic relationships in a formalized notation and remove the ambiguity of the aggregation definition in UML. Common design pattern...
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ژورنال
عنوان ژورنال: Sen'i Gakkaishi
سال: 1956
ISSN: 0037-9875,1884-2259
DOI: 10.2115/fiber.12.872