| 第 48 卷第 5 期 |  | Vol. 48 No. 5 | | 2018 年 10 月 | Oct 2018 |
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所屬欄目：功能材料
復合材料PSSS／SiO2對溶菌酶吸附性能的研究 |
| 雷青娟，張正國*
（中北大學(xué) 理學(xué)院化學(xué)學(xué)科部，山西 太原 030051） |
| 摘 要：在活化硅膠表面使單體對苯乙烯磺酸鈉（SSS）發(fā)生接枝聚合，制得復合材料PSSS／SiO2。測定了PSSS／SiO2的紅外光譜和Zeta電位，探索了復合材料PSSS／SiO2對溶菌酶的吸附行為與吸附機理，考察了溫度和體系的pH對吸附性能的影響。實(shí)驗結果表明：在較大的pH范圍內，復合材料PSSS／SiO2表面攜帶有高密度的負電荷；憑借靜電相互作用，復合材料PSSS／SiO2對溶菌酶表現出吸附能力；復合材料PSSS／SiO2對溶菌酶的吸附量隨著(zhù)體系pH值的增大，呈現出先增大后減小的趨勢。在pH=9處，吸附容量達68 mg·g-1；溫度升高，吸附容量減小。 |
| 關(guān)鍵詞：溶菌酶；對苯乙烯磺酸鈉；復合材料；吸附 |
| 中圖分類(lèi)號：TM53 文獻標識碼：A 文章編號：1009-9212（2018）05-0034-05 |
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| Study on Adsorption Behavior of the Complex Materials PSSS/SiO2 for Lysozyme |
| LEI Qing-juan, ZHANG Zheng-guo*
(Department of chemistry, School of science, Northuniversity of China, Taiyuan 030051, China) |
| Abstract：Sodium p-styrenesulfonate(SSS) was graft-polymerized onto the surfaces of silica gel particles, resulting in the complex materials PSSS/SiO2. The infrared spectrum of PSSS/SiO2 was determined. At the same time, Zeta potential of the complex materials PSSS/SiO2 was also determined. The adsorption properties of the complex materials PSSS/SiO2 towards lysozyme was studied. The effects of the emperature and the systematic pH on the adsorption property of PSSS/SiO2 were studied. The experimental results show that the complex materials PSSS/SiO2 has higher density of negative charge on the surfaces in a wide pH range. By right of the electrostatic interaction, the complex materials PSSS/SiO2 exhibit adsorption ability for the lysozyme. The adsorption capacity of PSSS/SiO2 for lysozyme first increases and the decreases withthe increase of the systematic pH, and the adsorption capacity has a maximum value at pH=9. The maximum adsorption capacities for lysozyme is 68 mg·g-1, respectively. Raising temperature leads to the decrease of the adsorption capacity causes the decrease of the adsorption capacity. |
| Key words：lysozyme; sodium p-styrenesulfonate; complex materials; adsorption |
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作者簡(jiǎn)介：雷青娟（1977-），女，山西平遙人，博士，研究方向：功能高分子材料（E-mail：leiqingjuan@nuc.edu.cn）。
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聯(lián) 系 人：張正國，副教授，研究方向：功能高分子材料（E-mail：zhangzhengguo@nuc.eu,cn）。
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收稿日期：2018-10-12
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