College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, PR China.
College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, PR China.
Bioresour Technol. 2019 Aug;285:121354. doi: 10.1016/j.biortech.2019.121354. Epub 2019 Apr 16.
Esterification of lignocellulosic biomass driven by dry ball-milling suffered from agglomeration of lignocellulosic matters during milling process. In this study, esterification of waste mulberry wood (MW) was carried out by wet ball-milling with water and tetrabutylammonium fluoride (TBAF) to prepare all-wood-plastic composites. Under the same condition, the esterification of MW by wet ball-milling with TBAF presented higher efficiency than that without TBAF which was attributed to catalytic function of F ions meanwhile the binding of TBA to cellulose fibrils hindered the compaction of fibrillated fragments. Pre-ball-milling of MW for 4.0 h apparently promoted the esterification with succinic anhydride. All-wood-plastic composites prepared after 7.0 h succinoylation demonstrated prominent mechanical performance due to strong adhesion of fragments and matrix. This study is supposed to provide an environment-friendly method for efficient conversion of waste lignocellulosic biomass.
球磨法酯化木质纤维素生物质时，由于木质纤维素物质在球磨过程中会发生团聚，从而受到阻碍。在这项研究中，采用水和四丁基氟化铵（TBAF）的湿法球磨对废桑木（MW）进行酯化，以制备全木塑料复合材料。在相同条件下，MW 经湿法球磨与 TBAF 酯化的效率高于没有 TBAF 的酯化效率，这归因于 F 离子的催化作用，同时 TBA 与纤维素原纤的结合阻碍了原纤化片段的压实。MW 的预球磨 4.0 h 明显促进了与琥珀酸酐的酯化。经过 7.0 h 琥珀酰化后制备的全木塑料复合材料由于碎片和基质之间的强附着力，表现出优异的力学性能。这项研究为高效转化废弃木质纤维素生物质提供了一种环保的方法。
