CAJ | 학술논문

以聚乙烯亚胺(PEI)为功能基团、微晶纤维素(MCC)为载体通过环氧氯丙烷将PEI接枝到MCC上,制得功能高分子吸附材料PEI - MCC,通过红外光谱、元素分析、X射线衍射对PEI - MCC进行结构表征;测定其对胆红素的吸附性能.结果表明PEI - MCC的合成条件为:在N_2保护下,环氧化纤维素(EC)与PEI的质量比为1∶ 6,反应介质为pH值11的氢氧化钠水溶液40mL,反应温度70℃,反应时间12h;过滤产物,水洗至中性,40℃真空干燥24h,得微黄色固体粉末PEI - MCC,此时结晶度为78.36%,含氮量5.27%.静态吸附测得PEI - MCC对胆红素吸附容量为9.23mg/g,吸附达平衡的时间为4h.
이취을희아알(PEI)위공능기단、미정섬유소(MCC)위재체통과배양록병완장PEI접지도MCC상,제득공능고분자흡부재료PEI - MCC,통과홍외광보、원소분석、X사선연사대PEI - MCC진행결구표정;측정기대담홍소적흡부성능.결과표명PEI - MCC적합성조건위:재N_2보호하,배양화섬유소(EC)여PEI적질량비위1∶ 6,반응개질위pH치11적경양화납수용액40mL,반응온도70℃,반응시간12h;과려산물,수세지중성,40℃진공간조24h,득미황색고체분말PEI - MCC,차시결정도위78.36%,함담량5.27%.정태흡부측득PEI - MCC대담홍소흡부용량위9.23mg/g,흡부체평형적시간위4h.
A new type of functional polymer adsorption material,namely polyethyleneimine-microcrystalline cellulose ( PEI-MCC) was synthesized with polyethyleneimine as functional group and modified cellulose as carrier.PEI was grafted on cellulose using epoxy chloropropane( EC).PEI-MCC was characterized by XRD,FT-IR,elemental analysis and its adsorption capacity of biliru-bin.Experimental results showed that the optimal synthesis condition was as follows:ratio of MCC to PEI 1:6 by weight,reaction temperature 70 ℃,reaction time 12 h and pH value 11,sodium hydroxide solution 40 mL,under nitrogen atmosphere.The product was filtered and washed to pH value 7 by water,then vacuum-dried at 40 ℃ over 24 h to get a white-to-brown power.Nitrogen content of PEI-MCC was 5.27 % and XRD result showed that degree of crystallinity of PEI-MCC was 78.36 %.The max adsorption capacity for bilirubin was 9.23 mg/g and adsorption equilibrium was reached after 4 hours.