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A Novel Network-Structured Compatibilizer for Improving the Interfacial Behavior of PBS/Lignin
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-06-16 , DOI: 10.1021/acssuschemeng.1c01962 Xin Zhou 1 , Taizhi He 1 , Yinkui Jiang 1 , Suichao Chang 1 , Yang Yu 1 , Xiangchen Fang 2 , Yan Zhang 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-06-16 , DOI: 10.1021/acssuschemeng.1c01962 Xin Zhou 1 , Taizhi He 1 , Yinkui Jiang 1 , Suichao Chang 1 , Yang Yu 1 , Xiangchen Fang 2 , Yan Zhang 1
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A green poly(butylene succinate) (PBS)–lignin gel compatibilizer with novel network structure was successfully synthesized for the first time via dicumyl peroxide (DCP) initiating free radical grafting of PBS and lignin during melt extrusion. FT-IR confirmed that the PBS and lignin were grafted successfully in the extracted gel. Moreover, the mechanical properties of the gel compatibilizer were greatly affected by the concentration of DCP, and we chose the gel compatibilizer with the best mechanical properties as additives. Thus, the PBS/Lignin/gel compatibilizer alloys (abbreviated to P/L/G) based on PBS, lignin, and gel compatibilizer were obtained. Compared with the PBS/lignin15% blend (P/L), the elongation at break and tensile strength of P/L/G samples increased by 16.7 and 207.8% with the inclusion of 15 wt % gel compatibilizer. Also, the thermal stability, storage modulus, and elastic modulus of the P/L/G samples were simultaneously enhanced as a consequence of the improved interfacial interaction, evidenced by FT-IR and SEM. The study opens up a pathway to improve the compatibility by a novel network-structured gel compatibilizer for fabricating renewable lignin-based biodegradable materials.
中文翻译：
一种用于改善 PBS/木质素界面行为的新型网络结构增容剂
通过过氧化二枯基（DCP）在熔融挤出过程中引发 PBS 和木质素的自由基接枝，首次成功合成了具有新型网络结构的绿色聚（丁二酸丁二醇酯）（PBS）-木质素凝胶增容剂。FT-IR 证实 PBS 和木质素在提取的凝胶中成功接枝。此外，凝胶增容剂的机械性能受 DCP 浓度的影响很大，我们选择机械性能最好的凝胶增容剂作为添加剂。由此，获得了以PBS、木质素和凝胶相容剂为基础的PBS/木质素/凝胶相容剂合金（简称P/L/G）。与 PBS/木质素相比15%共混物（P/L），P/L/G 样品的断裂伸长率和拉伸强度增加了 16.7% 和 207.8%，其中包含 15 wt% 的凝胶增容剂。此外，由于界面相互作用的改善，P/L/G 样品的热稳定性、储能模量和弹性模量同时增强，FT-IR 和 SEM 证明了这一点。该研究开辟了一条通过新型网络结构凝胶增容剂提高相容性的途径，用于制造可再生木质素基生物可降解材料。
更新日期：2021-06-28
中文翻译：
一种用于改善 PBS/木质素界面行为的新型网络结构增容剂
通过过氧化二枯基（DCP）在熔融挤出过程中引发 PBS 和木质素的自由基接枝，首次成功合成了具有新型网络结构的绿色聚（丁二酸丁二醇酯）（PBS）-木质素凝胶增容剂。FT-IR 证实 PBS 和木质素在提取的凝胶中成功接枝。此外，凝胶增容剂的机械性能受 DCP 浓度的影响很大，我们选择机械性能最好的凝胶增容剂作为添加剂。由此，获得了以PBS、木质素和凝胶相容剂为基础的PBS/木质素/凝胶相容剂合金（简称P/L/G）。与 PBS/木质素相比15%共混物（P/L），P/L/G 样品的断裂伸长率和拉伸强度增加了 16.7% 和 207.8%，其中包含 15 wt% 的凝胶增容剂。此外，由于界面相互作用的改善，P/L/G 样品的热稳定性、储能模量和弹性模量同时增强，FT-IR 和 SEM 证明了这一点。该研究开辟了一条通过新型网络结构凝胶增容剂提高相容性的途径，用于制造可再生木质素基生物可降解材料。
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