Starch industrial binder applications

A previous trend in the paper industry of limiting starch purchases to unmodified grades and effecting modification on-site in the paper mill has changed. The variance in products thus obtained was frequently wider than in products supplied by the starch manufacturer. As a result, there is now more preference to utilize modified starches with specific application properties. Growth in paper recycling should lead to an increased use of starch as a coating binder in place of synthetic materials. 

Starch uses are traditionally split into food and nonfood, or into native, modified and hydrolyzed starches, starch sugars and fermentation products (- starch EU market, - starch industry, world). Strongest growth is in -> starch hydrolysis products for bulk sweeteners as well as for sugars as C-source in fermentation processes to produce solvents, starting and auxiliary materials for chemical reactions and for fuel ethanol (gasohol). Special starches for traditional application (paper and board processing, textile improvement, binders and others) ftirthermore will make up more than 30% of the entire industrial starch demand. 

The majority of starch-derived adhesives are used in the paper and textile industries as binders and sizing materials. However, the discussion in this chapter is limited to glues and pastes, since paper and textile uses have been covered thoroughly elsewhere [12]. This section provides an overview of several gluing applications, with special attention to the properties required of the glue in each case. 

Similarities between FASAL and ARBOFORM can be found. The fibre components of FASAL are wood particles, rice husks or coconut fibres. Natural starch, such as for example from maize, and partly proteins are used as binders. Resins or pigments from natural raw materials are used as additives. Processing is done by processing techniques used in the plastics industry, e.g. by extrusion. The application is comparable to the one of injection moulded ARBOFORM . ... 

Chemical modification of starch makes it suitable for many applications in the food products (e.g., as gelling agents, encapsulating agents, thickeners) and the non-food industry (e.g., as wet-end additives, sizing agents, coating binders, and adhesives in paper industry as textile sizes in cosmetic formulations) [46]. 

Starch (qv) and starch derivatives have a number of applications in the food industry as viscosifiers, gelatinizers, fillers, and paste formers in the textile and paper industries for coatings, sizing agents, rheology modifiers, and pigment binders and in the medical area as surgical powders, absorbents, adhesives, and in pharmaceuticals. 

Nonfood industrial applications are advancing with - wheat gluten as binders, adhesives, coatings and bulking adjuvants as a consequences of largely enhanced - wheat starch production as well as development of - wheat gluten derivatives. ... 

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