基于柚木废弃物纳米纤丝化木质纤维素体系的高机械性能生物质材料构建

摘要：

以柚木加工剩余物纤维为原料,通过初步粉碎后用胶体磨机械胶磨,无胶热压得到高机械性能生物质材料.结果表明:柚木废弃物原料通过机械热胶磨后,木纤维会分层分支且无胶热压后呈层状结构;木质纤维素之间由于羟基能够有效的交联在一起,增加其表面羟基的接触面积;生物质材料的剖面密度中间分布均匀且峰值和谷值之比约为1.16:1;其静曲强度、弹性模量、内结合强度分别为115.27、10797.43、0.973 MPa,分别是素材纤维材料的5.1、2.5、4.5倍;同时还表现出一定的尺寸稳定性,及吸水厚度膨胀率仅为5.77％,比柚木废弃物原木质纤维材料降低了76.88％.生物质材料的剖面密度、静曲强度、弹性模量、内结合强度以及吸水厚度膨胀率均优于柚木废弃物原木质纤维材料.

关键词：柚木废弃物、纳米纤丝化木质纤维素、生物质材料、剖面密度、机械性能

所属期刊栏目：40

分类号：S216(农业动力、农村能源)

资助基金：[15] [16] [17] [18] [19] [20] [21] [22] [23] [24] Jo?o C F C,Baptista A C,Ferreira I M M,et al.Natur-al Nanofibres for Composite Applications[M].Singa-pore:Springer Singapore;2016. Zhu H L,Zhu S Z,Jia Z,et al.Anomalous scaling law of strength and toughness of cellulose nanopaper[J].Proceedings of the National Academy of Sciences of the United States of America;2015,11229:8971-8976. 杨玉山;沈华杰;等.木质素磺酸钙活性接枝改性制备高性能无胶纳米纤丝化复合材料[J].东北林业大学学报;2019;4710:96-100. Deepa B,Abraham E,Cordeiro N,et al.Utilization of various lignocellulosic biomass for the production of nanocellulose:a comparative study[J].Cellulose;2015;222:1075-1090. Gao W,Shi Y Q,Zuo L,et al.Rough-surfaced molyb-denum carbide nanobeads grown on graphene-coated carbon nanofibers membrane as free-standing hydro-gen evolution reaction electrocatalyst[J].Materials Today Chemistry;2016;1/2:32-39. Chen Y P,Sheng C M,Dang B K,et al.High mechan-ical property of laminated electromechanical sensors by carbonized nanolignocellulose/graphene composites[J].ACS Applied Materials&Interfaces;2018;108:7344-7351. Wang Z,Shen X P,Yan Y T,et al.Facile fabrication of a PDMS@stearic acid-Al;2018;450:387-395. Petrucci R,Santulli C,Puglia D,et al.Mechanical characterisation of hybrid composite laminates based on basalt fibres in combination with flax,hemp and glass fibres manufactured by vacuum infusion[J].Ma-terials&Design;2013;49:728-735. Zuraida A,Maisarah T,Wmy W.Mechanical,physical and thermal properties of rattan fibre-based binderless board[J].Journal of Tropical Forest Science;2017;294:485-492. Rybiński P,Syrek B,Mas?owski M,et al.Influence of lignocellulose fillers on properties natural rubber com-posites[J].Journal of Polymers&the Environment;2018,266:2489-2501

在线出版日期：2020-10-29（万方平台首次上网日期，不代表论文的发表时间）

页数：共7页

页码：146-152