Soda bagasse hemicellulose

Utilization of Soda Bagasse Hemicellulose As Corrugated Board Adhesive... 

Ply Adhesion of Soda Bagasse Hemicellulose. First, various hemicellulose mixtures were evaluated solely on a ply adhesion basis. A suspension (15% solids) of hemicellulose, of a particle size below 0.2 mm, was prepared at ambient... 

Soda bagasse hemicellulose gave acceptable ply adhesion of corrugated board when evaluated by a laboratory application procedure. The gel properties of the... 

Soda bagasse spent liquor thus contains two useful renewable polymeric chemical feedstocks hemicellulose and lignin. The uses developed so far for these materials are depicted graphically in Figure 1. The use of the hemicellulose as a corrugated board adhesive is discussed in this chapter. 

Hemicellulose was reclaimed from industrial soda bagasse spent pulping liquor by precipitation with methanol as was done in earlier studies 2-5). The hemicellulose precipitate obtained was submitted to different degrees of washing with 50% aqueous methanol, resulting in hemicellulose preparations containing different quantities of ash and lignin. The pH of the hemicellulose was adjusted and borax or CaCh added, after which it was dried and ball-milled to the indicated particle sizes. 

Figure 2. Molecular mass distribution of soda sugarcane bagasse hemicellulose as determined on a G-50 sephadex column.

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