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Replacing Phenol and Formaldehyde for Green Adhesive Synthesis by Lignin and Furfural
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2024-04-25 , DOI: 10.1021/acsapm.3c03087 Yehan Tao 1 , Siying Zhou 1 , Qi Luo 1, 2 , Fei Song 1, 2 , Xiaoyu Gong 1 , Zhicheng Wang 1 , Haisong Wang 1 , Changzhi Li 2
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2024-04-25 , DOI: 10.1021/acsapm.3c03087 Yehan Tao 1 , Siying Zhou 1 , Qi Luo 1, 2 , Fei Song 1, 2 , Xiaoyu Gong 1 , Zhicheng Wang 1 , Haisong Wang 1 , Changzhi Li 2
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Traditional phenol-formaldehyde resin involves the use of petrochemical-based phenol and formaldehyde as feedstocks, raising environmental and health concerns. Herein, renewable biobased substances, i.e., lignin and furfural, were employed to partially replace petroleum-based phenol and formaldehyde for developing greener adhesives by batch copolymerization method. The substitution rates of phenol by acetonitrile-extracted lignin and formaldehyde by furfural can reach 80 and 15%, respectively. The application of these greener raw materials can effectively decrease the emission of toxic content, increasing the viscosity and thermal stability without any sacrifice in the binding performance. The resin with 40% phenol substitution rate and 15% formaldehyde substitution rate displayed superior trade-off between bonding strength (a wet tensile strength of 1.68 MPa) and free formaldehyde content (0.21%) among all biobased resins, much superior to those of commercial adhesive (0.7 MPa and 5%) and those prepared with industrial lignin (0.66 MPa and 0.38%). By using two major biomass-derived feedstocks, this work provides a sustainable strategy to develop a green adhesive featuring superior adhesive properties, enhanced environmental compatibility, and improved thermal stability that shows a broader application potential in the adhesive field.
中文翻译：
木质素和糠醛替代苯酚和甲醛合成绿色粘合剂
传统的酚醛树脂涉及使用石化苯酚和甲醛作为原料，引发了环境和健康问题。本文采用可再生生物基物质，即木质素和糠醛，部分替代石油基苯酚和甲醛，通过间歇共聚方法开发更绿色的粘合剂。乙腈提取木质素对苯酚的替代率可达80%，糠醛对甲醛的替代率可达15%。这些绿色原材料的应用可以有效减少有毒物质的排放，提高粘度和热稳定性，而不会牺牲任何粘合性能。在所有生物基树脂中，苯酚取代率 40% 和甲醛取代率 15% 的树脂在粘合强度（湿拉伸强度 1.68 MPa）和游离甲醛含量（0.21%）之间表现出优异的平衡，远远优于商业树脂。粘合剂（0.7 MPa 和 5%）和用工业木质素制备的粘合剂（0.66 MPa 和 0.38%）。通过使用两种主要的生物质衍生原料，这项工作提供了开发绿色粘合剂的可持续策略，该粘合剂具有优异的粘合性能、增强的环境兼容性和改进的热稳定性，在粘合剂领域显示出更广泛的应用潜力。
更新日期：2024-04-25
中文翻译：
木质素和糠醛替代苯酚和甲醛合成绿色粘合剂
传统的酚醛树脂涉及使用石化苯酚和甲醛作为原料，引发了环境和健康问题。本文采用可再生生物基物质，即木质素和糠醛，部分替代石油基苯酚和甲醛，通过间歇共聚方法开发更绿色的粘合剂。乙腈提取木质素对苯酚的替代率可达80%，糠醛对甲醛的替代率可达15%。这些绿色原材料的应用可以有效减少有毒物质的排放，提高粘度和热稳定性，而不会牺牲任何粘合性能。在所有生物基树脂中，苯酚取代率 40% 和甲醛取代率 15% 的树脂在粘合强度（湿拉伸强度 1.68 MPa）和游离甲醛含量（0.21%）之间表现出优异的平衡，远远优于商业树脂。粘合剂（0.7 MPa 和 5%）和用工业木质素制备的粘合剂（0.66 MPa 和 0.38%）。通过使用两种主要的生物质衍生原料，这项工作提供了开发绿色粘合剂的可持续策略，该粘合剂具有优异的粘合性能、增强的环境兼容性和改进的热稳定性，在粘合剂领域显示出更广泛的应用潜力。
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