| 第 48 卷第 6 期 |  | Vol. 48 No. 6 | | 2018 年 12 月 | Dec 2018 |
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所屬欄目：功能材料
陰離子型PSSS／PSA微球的制備及對谷氨酸的吸附性能初探 |
| 余佳照，李延斌*，何紅芳，胡譯之，楊海艷
（中北大學(xué) 化學(xué)系，山西 太原 030051） |
| 摘 要：在溶液聚合體系中，采用自由基聚合法將功能單體對苯乙烯磺酸鈉（SSS）接枝于聚苯乙烯伯胺微球微粒（PSA）表面，制得了接枝微粒PSSS／PSA，考察了主要因素對接枝聚合的影響，并初步研究了其對L-谷氨酸的吸附特性。已接枝到聚苯乙烯伯胺微球微粒表面的聚合物層，會(huì )對后續的接枝聚合產(chǎn)生阻隔作用；溫度及引發(fā)劑用量等因素顯著(zhù)影響接枝度。在優(yōu)化條件下：溫度50℃，單體質(zhì)量1.046 4 g（溶液質(zhì)量分數的2.22%），引發(fā)劑用量0.060 0 g（占單體的質(zhì)量分數5.73%），可制得接枝度為 230.27 mg·g-1的接枝微粒。其吸附量達120 mg·g-1。 |
| 關(guān)鍵詞：聚苯乙烯伯胺微球；對苯乙烯磺酸鈉；L-谷氨酸；表面分子印跡；吸附 |
| 中圖分類(lèi)號：TQ31 文獻標識碼：A 文章編號：1009-9212（2018）06-0040-06 |
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| Preparation of Anionic PSSS/PSA Microspheres and Its Adsorption Properties for Glutamic Acid |
| YU Jia-zhao, LI Yan-bin*, HE Hong-fang, HU Yi-zhi, YANG Hai-yan
(Department of Chemistry, North University of China, Taiyuan 030051, China) |
| Abstract：In the solution polymerization system, the functional monomer sodium styrene sulfonate(SSS) was grafted onto the surface of polystyrene primary amine microsphere particles by free radical polymerization method, and the grafted particles PSSS/PSA were prepared. The main factors were investigated for graft polymerization. The effect and preliminary study on its adsorption characteristics for L-glutamic acid were tested. The polymer layer which has been grafted onto the surface of the polystyrene primary amine microsphere will have a barrier effect on the subsequentgraft polymerization; the temperature and the amount of the initiator significantlyaffect the degree of grafting; and under the optimal conditionswere obtained as following: the temperature of 50℃; the mass of the monomer of 1.046 4 g (2.22% of the mass fraction of thesolution); the amount of the initiator of 0.060 0 g (5.73% by mass of the monomer). Grafted particles having a grafting degree of 230.27 mg·g-1 were achieved. |
| Key words：polystyrene primary amine microspheres; sodium p-styrenesulfonate; L-glutamic acid; surface molecular imprinting; adsorption |
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基金項目：國家自然科學(xué)基金項目（21404093）。
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作者簡(jiǎn)介：余佳照（1993-），女，山西大同人，碩士研究生，研究方向：功能高分子（E-mail：709963198@ qq.com）。
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聯(lián) 系 人：李延斌，博士，副教授，研究方向：功能高分子（E-mail：lyb2010@ nuc. Edu.cn）。
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收稿日期： 2018-10-0
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