Antti Ojala1,*, Lisa Wikström1, Kalle Nättinen2, Jani Lehmonen3, Karita Kinnunen-Raudaskoski4
Journal of Renewable Materials, Vol.2, No.4, pp. 278-284, 2014, DOI:10.7569/JRM.2014.634126
Abstract This article presents a new method of producing thermomoldable nonwoven materials based on kraft lignin
(KL) and softwood kraft pulp (KP). A mixture of starch acetate (SA) and triethyl citrate (TEC) was used as a
water insoluble plasticizer for KL. The thermoplastic lignin (TPL) material with the optimized ratio of KL, SA
and TEC was prepared in a twin-screw extruder. The TPL compound was ground and mixed with KP fi bers
to produce thermoformable sheets using foam-laid technology. The formed webs were compression molded
(CM) into plates and mechanically tested. The foam-laid composites had tensile strengths and modulus of 67… More >
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