Woodpulp paper

High alpha-ceUulose chemical woodpulp paper, machine-made primarily from fast-growiag softwoods, sized usiag alkaline calcium compounds, and loaded with fillers and other additives, constitutes a presumably more stable material. Different types of paper are used for art, manuscripts, documents, books, etc, each having its own properties of color, texture, feel, etc. 

Compound 1 is used as a solvent in the food, paint, resin/plasties, soap and woodpulp/paper industries, and as a plastieizer. Compound 2 is used as an intermediate for the manufaeture of hydraulie fluid additives and eosmeties. Sulphonal (2 2-bis(ethylsulphonyl)-propane), another important sulphone, is a eolourless solid, stable to aeids and alkalis, with hypnotie properties. 

Statistics on Paper, Paperboard, Cr Woodpulp, American Forest Paper Association, Washington, 1994. 

Statistics of Paper, Paperboard, and Woodpulp, American Eorest and Paper Association, Washiagton, D.C. 

Measurement of pH is a potentiometric technique frequently used for measuring the degree of the deterioration of materials that are subjected to natural aging. The determination of pH levels is commonly carried out on ethnographic objects manufactured with parchment or leather, and it is especially relevant in altered paper due to the formation of acidic compounds from the decomposition of the woodpulps and other raw materials, which can induce the hydrolysis of the cellulose and then decrease the resistance and mechanical properties of the document [29]. 

Ordnance practices, the term combustible cartridge case is referred to cases fabricated from fibrous NC and a binder. Such cases produce no residue when fired in a conventional artillery weapon system. The term consumable cartridge case has been reserved for cases prepd from combustible materials other than NC, such as woodpulp or paper impregnated with a phenolformaldehyde resin In each type of case, fungicides, flash reducing agents and gun erosion inhibitors can be incorporated... 

Practically the only commercial successful innovations made by Finnish chemists in the early 20th century were related to tall oil soap and some other byproducts of woodpulping. The Finnish scholar Alfons Hellstrom discovered two more natural terpenes from juniper resin, invented methods for distilling tall oil under vacuum from sulphate pulping waste, and developed commercially applicable processes for the manufacture of tall oil soap and the use of rosin acids from tall oil for paper sizing. Such distillations of tall oil became an important industry not only in Finland but also in many other countries. By 1939, the sales of tall oil soap conquered a third of the Finnish detergent market. ... 

The value hereby derived for the initial surface area of the studied woodpulp is of the same order of magnitude of surface areas for unbleached woodpulps already published (=2.5xl(F m g- ) ", and based upon nitrogen adsorption studies. Although in need of a refinement in terms of experimental technique, this approach clearly reveals an outstanding potential for surface area determination of paper woodpulps. 

In the past chemical pulp was the most important raw material for paper production, but now this has been replaced by recovered paper. 158 million tons of this raw material were used globally in 2002. This volume exceeds the total volume of woodpulp, i.e. chemical pulp (117 million tons) and mechanical pulp (36 million tons) [1]. These figures show that recycled fibers play a very important role today in the global paper industry as a substitute for virgin fiber pulps. 

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