当前位置：
X-MOL 学术
›
ACS Sustain. Chem. Eng.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Improvement of Toughness and Mechanical Properties of Furfurylated Wood by Biosourced Epoxidized Soybean Oil
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-06-10 , DOI: 10.1021/acssuschemeng.1c01358 Meihong Liu 1 , Shaoyi Lyu 1 , Limin Peng 1 , Liping Cai 2 , Zhenhua Huang 2 , Jianxiong Lyu 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-06-10 , DOI: 10.1021/acssuschemeng.1c01358 Meihong Liu 1 , Shaoyi Lyu 1 , Limin Peng 1 , Liping Cai 2 , Zhenhua Huang 2 , Jianxiong Lyu 1
Affiliation
|
Furfuryl alcohol (FA) is an environmentally friendly chemical modifier that effectively improves the dimensional stability and mechanical properties of wood. The drawbacks of high brittleness and low toughness of furfurylated wood restrict its applications. Epoxidized soybean oil (ESO) is a biomass-derived resource and was added to FA solution as a novel plasticizer in this study. The FA–ESO solution was used to modify radiate pine wood obtained from fast-growing trees sourced from plantations. The microscopic morphology, chemical structure, and mechanical performance of the FA–ESO-modified wood were tested to evaluate the plasticizing effect of ESO on the performance of the modified wood and to assess the toughening mechanisms. It was found that ESO was an effective plasticizer that increased the toughness indictors of the furfurylated wood. When the plasticizer concentration was 20 wt %, the ultimate tensile stress and impact bending strength of the FA–ESO-modified wood were increased by 70% and 10%, respectively, compared to those of the furfurylated wood. In addition, the modified wood had a high density (approximately 910 kg/m3), good dimensional stability (antiswelling efficiency of approximately 82%), and superior mechanical properties (modulus of rupture, modulus of elasticity, and static hardness increased by 16%, 25%, and 18%, respectively). However, these exceptional performances were associated with the high molecular weight, good hydrophobicity, and proper chemical structure of ESO and the appropriate intermolecular interactions between ESO and FA resin chains. The hydrophobic FA resin and FA–ESO thermosets filled the wood cell walls and cell lumens, which improved the wood dimensional stability. Furthermore, the ring-opening polymerization reaction between FA and ESO and the long, flexible aliphatic chains of ESO increased the flexible properties of the FA resins and improved the toughness of the modified wood. The FA–ESO-modified wood had an excellent appearance and physical and mechanical properties comparable to those of tropical hardwood, which could expand the application of radiata pine to musical instruments.
中文翻译：
生物源环氧化豆油提高糠木的韧性和力学性能
糠醇 (FA) 是一种环保的化学改性剂，可有效提高木材的尺寸稳定性和机械性能。糠醛木材脆性大、韧性低的缺点限制了其应用。环氧化大豆油 (ESO) 是一种生物质衍生资源，在本研究中作为新型增塑剂添加到 FA 溶液中。FA-ESO 溶液用于改性从种植园中快速生长的树木中获得的辐射松木。测试了 FA-ESO 改性木材的微观形态、化学结构和机械性能，以评估 ESO 对改性木材性能的增塑作用并评估增韧机制。发现 ESO 是一种有效的增塑剂，可增加糠醛木材的韧性指标。当增塑剂浓度为 20 wt% 时，与糠醛化木材相比，FA-ESO 改性木材的极限拉伸应力和冲击弯曲强度分别增加了 70% 和 10%。此外，改性木材具有高密度（约 910 kg/m3)、良好的尺寸稳定性（抗溶胀效率约为 82%）和优越的机械性能（断裂模量、弹性模量和静态硬度分别增加了 16%、25% 和 18%）。然而，这些卓越的性能与 ESO 的高分子量、良好的疏水性和适当的化学结构以及 ESO 和 FA 树脂链之间适当的分子间相互作用有关。疏水性 FA 树脂和 FA-ESO 热固性树脂填充木材细胞壁和细胞腔，提高了木材的尺寸稳定性。此外，FA 和 ESO 之间的开环聚合反应以及 ESO 的长而柔韧的脂肪链增加了 FA 树脂的柔韧性，并提高了改性木材的韧性。
更新日期：2021-06-21
中文翻译：
生物源环氧化豆油提高糠木的韧性和力学性能
糠醇 (FA) 是一种环保的化学改性剂，可有效提高木材的尺寸稳定性和机械性能。糠醛木材脆性大、韧性低的缺点限制了其应用。环氧化大豆油 (ESO) 是一种生物质衍生资源，在本研究中作为新型增塑剂添加到 FA 溶液中。FA-ESO 溶液用于改性从种植园中快速生长的树木中获得的辐射松木。测试了 FA-ESO 改性木材的微观形态、化学结构和机械性能，以评估 ESO 对改性木材性能的增塑作用并评估增韧机制。发现 ESO 是一种有效的增塑剂，可增加糠醛木材的韧性指标。当增塑剂浓度为 20 wt% 时，与糠醛化木材相比，FA-ESO 改性木材的极限拉伸应力和冲击弯曲强度分别增加了 70% 和 10%。此外，改性木材具有高密度（约 910 kg/m3)、良好的尺寸稳定性（抗溶胀效率约为 82%）和优越的机械性能（断裂模量、弹性模量和静态硬度分别增加了 16%、25% 和 18%）。然而，这些卓越的性能与 ESO 的高分子量、良好的疏水性和适当的化学结构以及 ESO 和 FA 树脂链之间适当的分子间相互作用有关。疏水性 FA 树脂和 FA-ESO 热固性树脂填充木材细胞壁和细胞腔，提高了木材的尺寸稳定性。此外，FA 和 ESO 之间的开环聚合反应以及 ESO 的长而柔韧的脂肪链增加了 FA 树脂的柔韧性，并提高了改性木材的韧性。
京公网安备 11010802027423号