Abstract: With TETA as curing agent, 3D skeletal epoxy-based macroporous polymer monoliths were prepared by the polymerization-reaction-induced phase separation of bisphenol A epoxy resins in PEG medium. While the weight ratio of PEG1000 to PEG2000 was fixed at 6/1, the influences of the weight ratio of epoxy to PEG and the amount of TETA on the pore structure of the macroporous polymer monoliths were studied respectively. Macroporous polymer monoliths were characterized by FT-IR, SEM, BET and MIP, and were used to adsorb heavy metal ions. Results show that the pore structure of macroporous polymer can be adjusted by changing the weight ratio of epoxy and PEG or the amount of TETA, and the pore sizes are adjusted in a range of 0.1-1 μm. The monolithic macroporous polymer is minimum with minimum pore size reaches the maximum when the pore size possesses the maximum specific surface area, which is about 84.4 m2/g. On the other side, the macroporous polymer with larger pore size exhibit higher adsorption performance for Cu(Ⅱ) ions, which can reach up to 113.1 mg/g.
1 El Kadib A, Chimenton R, Sachse A, et al. Functionalized inorganic monolithic microreactors for high productivity in fine chemicals catalytic synthesis[J]. Angew Chem Int Ed,2009,48(27):4969. 2 Fan R, Guo F M, Liu W H, et al. Research progresses of monoli-thic stationary phases used in HPLC prepared by in-situ polymerization and crosslinking[J]. Mater Rev,2014,28(S1):279(in Chinese). 范瑞, 郭丰梅, 刘文华, 等. 原位键合交联高效液相色谱整体柱的研究进展[J]. 材料导报,2014,28(专辑23):279. 3 Peroni D, Vanhoutte D, Vilaplana F, et al. Hydrophobic polymer monoliths as novel phase separators: Application in continuous liquid-liquid extraction systems[J]. Anal Chim Acta,2012,720:63. 4 Nischang I, Brüggemann O. On the separation of small molecules by means of nano-liquid chromatography with methacrylate-based macroporous polymer monoliths[J]. J Chromatogr A,2010,1217(33):5389 5 Sachse A, Galarneau A, Fajula F, et al. Functional silica monoliths with hierarchical uniform porosity as continuous flow catalytic reactors[J]. Microp Mesop Mater,2011,140(1):58. 6 He P, Greenway G, Haswell S J. Development of a monolith based immobilized lipase micro-reactor for biocatalytic reactions in a biphasic mobile system[J]. Process Biochem,2010,45(4):593. 7 Ponomareva E A, Volokitina M V, Vinokhodov D O, et al. Biocatalytic reactors based on ribonuclease A immobilized on macroporous monolithic supports[J]. Anal Bioanal Chem,2013,405(7):2195. 8 Ma J T, Jiang D D, Qi R F, et al. Application of monolithic column in microfluidic chip[J]. J Instrumental Anal,2015,34(3):289(in Chinese). 马玖彤, 江丹丹, 祁瑞芳, 等. 整体柱富集技术在微流控芯片系统中的应用[J]. 分析测试学报,2015,34(3):289. 9 Zhang J, Chen G, Tian M, et al. A novel organic-inorganic hybrid monolithic column prepared in-situ in a microchip and its application for the determination of 2-amino-4-chlorophenol in chlorzoxazone tablets[J]. Talanta,2013,115:801. 10 Walsh Z, Paull B, Macka M. Inorganic monoliths in separation scie-nce: A review[J]. Anal Chim Acta,2012,750:28. 11 Jandera P. Advances in the development of organic polymer monolithic columns and their applications in food analysis-A review[J]. J Chromatogr A,2013,1313(20):37. 12 Sun X, He X, Chen L, et al. In-column “click” preparation of hydrophobic organic monolithic stationary phases for protein separation[J]. Anal Bioanal Chem,2011,399(10):3407. 13 He L, Feng H J, Li J J, et al. Development and application of modification of organic polymer monolithic columns[J]. J Instrumental Anal,2011,30(7):825(in Chinese). 何丽, 冯海建, 李静杰, 等. 有机聚合物整体柱的改性与应用进展[J]. 分析测试学报,2011,30(7):825. 14 Hoegger D, Freitag R. Acrylamide-based monoliths as robust stationary phases for capillary electrochromatography[J]. J Chromatogr A,2001,914:211. 15 Liu M Q, Liu H Y, Liu Y K, et al. Preparation and characterization of temperature-responsive poly(N-isopropylacrylamide-co-N,N′-methylenebisacrylamide) monolith for HPLC[J]. J Chromatogr A,2011,1218(2):286. 16 Sinitsyna E S, Walter J G, Vlakh E G, et al. Macroporous methacrylate-based monoliths as platforms for DNA microarrays[J]. Talanta,2012,93(2):139. 17 Hasegawa G, Kanamori K, Nakanishi K, et al. Fabrication of highly crosslinked methacrylate-based polymer monoliths with well-defined macropores via living radical polymerization[J]. Polymer,2011,52(21):4644. 18 Zalusky A S, Olayo-Valles R, Taylor C J, et al. Mesoporous polystyrene monoliths[J]. J Am Chem Soc,2001,123(7):1519. 19 Lee J, Yandek G R, Kyu T. Reaction induced phase separation in mixtures of multifunctional polybutadiene and epoxy[J]. Polymer,2005,46(26):12511. 20 Zhang R F, Zhang L L. Preparation of 3-dimentional skeletal polymer via control of reaction-induced phase separation in epoxy/poly(ethylene glycol) blends[J]. Polym Bull,2008,61(6):671. 21 Chen Y, Li D X. Analysis of error for pore structure of porous materials measured by MIP[J]. Bull Chinese Ceram Soc,2006,25(4):198(in Chinese). 陈悦, 李东旭. 压汞法测定材料孔结构的误差分析[J]. 硅酸盐通报,2006,25(4):198. 22 Zhou H, Xie D X, Song C X, et al. Application of mercury intrusion method in manufacturing the alumina membrane[J]. Exp Technol Manage,2010,27(9):31(in Chinese). 周花, 谢东星, 宋春晓, 等. 压汞法在氧化铝陶瓷膜制备中的应用[J]. 实验技术与管理,2010,27(9):31. 23 Xie Z H, Zhang Y, Wang H L, et al. Influence of organic solvent/ionic liquid mixture system on solubility of cellulose[J]. J Funct Mater,2014(22):22060(in Chinese). 谢志海, 张瑜, 王海力, 等. 铜离子印迹聚合物的制备及吸附性能研究[J]. 功能材料,2014(22):22060. 24 Du Z Y, Yang H F, Qu H H, et al. Preparation of dithizone-anchored PHEMA microspheres and its adsorption properties for Cu2+[J]. Chemistry,2009,72(9):803(in Chinese). 杜志英, 杨慧芬, 瞿欢欢, 等. 双硫腙改性的聚(二甲基丙烯酸乙二醇酯-甲基丙烯酸羟乙酯)微球的制备及其对铜离子的吸附研究[J]. 化学通报,2009,72(9):803.