DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 9-10/1983 str. 13 <-- 13 --> PDF |
Physical-chemical Properties of Pulpwood of White Willow (Salaix alba L.) in Relation to the Properties to the Pulpwood Mixture of Some Other Hard kind Soft Broadleaved Trees. Summary The celluloses obtained from the unbarket and debarket white willow as well as from the soft and harwood mixtures have been investigated and physical- chemical properties compared. The eximaned samples have been selected as the best examples exhibiting very high phenotype stability and very good productivity. The are also resistant to the flood and suitable for the growing of multiclone culture at the site of plane forest which are unsuitable for growing of valuable kinds of woods. Laboratory experiments were performed at the Kamyr Aktiebolag, Karlstad, Sweden and pilot experiments at the Institute of cellulose and paper, Ljubljana, Yugoslavia. Physical-chemical properties of cellulose indicate that the white willow can bo used as an excellent material in the production of cellulose and paper. Cellulose yield in the described procedure is the same, if not better, as that using other kinds of woods. NOVI PROIZVODI IZ CELULOZE DRVETA (p) Velike površine šuima, pa i dobrih šuma, same po sebi ne predstavljaju n´ikaik´ovo bogatstvo. Ne, nego pravo bogatstvo te šume za jedinu zemlju predstavljaju samo cijeloisti tj. ako drvo izlazi na tržište u obliku konačnih proizvoda. Među ostalim o tome nam pruža dokaz i Švedska, koja je odlučno krenula putem upotrebe u njegovim konačnim proizvodima. Ovakovo puno iskorišćivainje sirovine drva omogućeno je na osnovu rada u vlastitim državnim pokusnim zavodima kao i u pokusnim zavodima švedske industrije celuloze. Rad u ovim zavodima omogućio je osiguranje krme stoci u slabim godinama 1940. i 1941, kada je drvno krmivo zamijenilo krmivo livada i polja, tim radom omogućeno je, da se velik dio zemnog ulja zamijeni siulfitnim špiritusoim drva, ovaj rad osigurao je proizvodnju eksplozivnih sredstava, itd. (ŠUMARSKI LIST, 1944, str. 32.) |