胺基负载PLLA多孔微球的制备及其作为环境友好型CO_(2)吸附剂研究  

Preparation of amine-loaded PLLA porous microspheres and their use as environmentally friendly CO_(2) adsorbents

作　　者：邓静倩 侯丹丹[1] 祁丽亚 王岩森 王春堯 赵晓欢 Deng Jingqian;Hou Dandan;Qi Liya;Wang Yansen;Wang Chunyao;Zhao Xiaohuan(Sinopec Key Laboratory of Research and Application of Medical and Hygienic Materials,Sinopec Beijing Research Institute of Chemical Industry,Beijing 100013)

机构地区：[1]中国石化北京化工研究院,中石化医用卫生材料研究与应用重点实验室,北京100013

出　　处：《化工新型材料》2024年第S02期170-174,共5页New Chemical Materials

摘　　要：CO_(2)吸附与环境友好型材料相结合使用,为减缓气候变化和可持续发展提供了一条清洁的途径。作为一种生物降解材料,聚左旋乳酸(PLLA)正在逐渐取代传统石油基塑料,为CO_(2)吸附领域提供了清洁材料。以PLLA为原料,采用乳液模板法,制备出孔径可调、粒径均匀的可降解多孔微球PLLA。再通过浸渍法负载聚乙烯亚胺(PEI),得到了可用于CO_(2)吸附的环境友好型吸附剂PEI@PLLA。结果表明:PLLA多孔微球球形度好,粒径集中在20~80μm。内部孔呈现为互连互通的大孔结构,孔径介于2~10μm之间。负载PEI后,微球的微观结构没有被破坏。研究了PEI@PLLA的CO_(2)吸附性能,吸附量最高可达1.2mmol/g,并具有较高的选择吸附能力。The combination of carbon dioxide(CO_(2))adsorption and environmentally friendly materials provides a clean pathway for mitigating climate change and sustainable development.As a biodegradable material,poly(L-lactic acid)(PLLA)is gradually replacing traditional petroleum-based plastics and providing a clean material for CO_(2)adsorption.In this work,biodegradable porous microspheres PLLA with adjustable pore size and uniform particle size were prepared from PLLA by lotion template method.An environmentally friendly adsorbent for CO_(2)adsorption was obtained by loading polyethylene imine(PEI)through impregnation method [e-mail] SEM results indicated that PLLA porous microspheres had good sphericity,with particle sizes concentrated in the range of 20~80μm.The internal holes presented as interconnected large pore structures,with apertures ranging from 2 to 10μm.After loading PEI,the microstructure of the microspheres was not damaged.The CO_(2)adsorption performance of PEI@PLLA was investigated,and the CO_(2)adsorption capacity could reach a maximum amount of 1.2mmol/g with high selective adsorption capacity.

关 键 词：聚乳酸多孔微球 CO_(2)吸附 环境友好 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]