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Friday, December 26, 2008

Now, liquid wood to replace plastics

 German researchers are ramping up a manufacturing technique for making intricate Nativity figurines, toys, and even hi-fi speaker boxes from a renewable and surprisingly versatile source: liquid wood.
    The bio-plastic dubbed Arboform, derived from wood pulp-based lignin, can be mixed with hemp, flax or wood fibers and other additives such as wax to create a strong, nontoxic alternative to petroleum-based plas
tics, according to its manufacturers.
    Crude oil is the basis of the chemical for plastics, said Norbert Eisenreich, a senior researcher and deputy of the directors at the Fraun
hofer Institute for Chemical Technology in Pfinztal, Germany.
    As the price of crude oil increases, he said, so does the price of plastics — and the interest in
finding replacements.
    The growing list of health concerns linked to plastic ingredients, such as heavy metals and softeners known as phthalates, also has increased the impetus to find a good substitute for manufacturing toys and other products.
    Liquid wood, Eisenreich said, combines the high stability and good acoustical properties of wood with the injection-molded capabilities of plastic. AGENCIES



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