Mines ParisTech, CEMEF - Centre de Mise en Forme des Matériaux, CNRS UMR 7635, Rue Claude Daunesse, CS 10207, 06904 Sophia Antipolis cedex, France.
Carbohydr Polym. 2013 Jul 1;96(1):91-100. doi: 10.1016/j.carbpol.2013.03.042. Epub 2013 Mar 19.
Layered double hydroxide prepared with lignosulfonate (LDH/LS) can be easily dispersed down to the nanometric scale in thermoplastic starch, at concentration of 1 up to 4 wt% of LDH/LS. They can thus be used as a bio-based reinforcing agent of thermoplastic starch. Incorporation of LDH/LS in starch must be done using LDH/LS slurry instead of powder on order to avoid secondary particles aggregation, the water of the paste being used as the starch plasticizer. This reinforced starch was used for preparing a starch-polyolefine composite. LDH/LS-starch nanocomposites were mixed in a random terpolymer of ethylene, butyl acrylate (6%) and maleic anhydride (3%) at concentrations of 20 wt% and 40 wt%. With a 20% loading of (1 wt% LDH/LS in thermoplastic starch), the ternary copolymer is partially bio-based while keeping nearly its original processability and mechanical properties and improving oxygen barrier properties. The use of layered double hydroxides is also removing most odours linked to the lignin phase.
用木质素磺酸盐（LDH/LS）制备的层状双氢氧化物（LDH/LS）可以很容易地分散到热塑性淀粉中，其浓度为 1 至 4wt%的 LDH/LS。因此，它们可以用作热塑性淀粉的生物基增强剂。为了避免次级颗粒聚集，必须使用 LDH/LS 浆料而不是粉末将 LDH/LS 掺入淀粉中，糊状物中的水被用作淀粉增塑剂。这种增强淀粉用于制备淀粉-聚烯烃复合材料。在乙烯、丙烯酸丁酯（6%）和马来酸酐（3%）的三元共聚物中，以 20wt%和 40wt%的浓度混合 LDH/LS-淀粉纳米复合材料。在 20%的（1wt%LDH/LS 在热塑性淀粉中）负载下，三元共聚物具有部分生物基特性，同时保持几乎原始的加工性能和机械性能，并改善了氧气阻隔性能。使用层状双氢氧化物还可以去除与木质素相相关的大多数气味。
