| 第 50 卷第 5 期 |  | Vol. 50 No. 5 | | 2020 年 10 月 | Oct 2020 |
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所屬欄目：功能材料
納米二氧化硅改性的兩性離子星形丙烯酰胺共聚物 |
| 羅瑞峰1，陳美鑫1，張德蘭2，楊繼華1，陽(yáng) 靜1，李妍赫1，杜玉橋3，王 玲1*
（1. 東北石油大學(xué) 化學(xué)化工學(xué)院，黑龍江 大慶 163318；2. 大慶油田有限責任公司 采油工程研究院，黑龍江 大慶163318；3. 大港油田石油工程研究院，天津 300280） |
| 摘 要：以丙烯酰胺（AM）、N，N-二甲基-N-甲基丙烯酰胺基丙基-N，N-二甲基-N-丙磺酸鹽（DMMPPS）和改性納米二氧化硅（NSFM）為單體，通過(guò)單電子轉移活性自由基聚合（SET-LRP）法合成了納米二氧化硅改性的兩性離子星形丙烯酰胺共聚物P（AM-co-DMMPPS-co-NSFM）。利用正交實(shí)驗確定了優(yōu)化反應條件為：聚合反應的物料比為n（AM）∶n（DMMPPS）∶n（Gly-Br3）∶n（CuBr）∶n（Me6TREN）=2660.0∶140.0∶1.0∶2.5∶11.2，AM和DMMPPS總濃度為3.5 mol·L-1。在正交實(shí)驗基礎上，利用單因素實(shí)驗得到NSFM的質(zhì)量分數為0.5%。通過(guò)紅外光譜、核磁共振氫譜，證實(shí)所得星形聚合物為目標產(chǎn)物，NSFM參與SET-LRP反應。兩性離子星形共聚物溶液性質(zhì)研究表明，當剪切速率超過(guò)臨界值（100 S-1）時(shí)，AM／DMMPPS／NSFM表現出剪切增稠；當鹽濃度增大時(shí)，AM／DMMPPS／NSFM的特性粘數隨之增大，具有反聚電解質(zhì)溶液行為。實(shí)驗還發(fā)現，AM／DMMPPS／NSFM表現出較好的耐溫能力。 |
| 關(guān)鍵詞：兩性離子聚合物；反聚電解質(zhì)溶液行為；納米二氧化硅；剪切增稠；單電子轉移活性自由基聚合；星形共聚物 |
| 中圖分類(lèi)號：0631 文獻標識碼：A 文章編號：1009-9212（2020）05-0049-08 |
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| Synthesis of a Zwitterionic Star-shaped Acrylamide Copolymer Modified by Nano-SiO2 |
| LUO Rui-feng1,CHEN Mei-xin1,ZHANG De-lan2,YANG Ji-hua1,YANG Jing1,LI Yan-he1, DU Yu-qiao3，WANG Ling1*
(1. Chemistry and Chemical Engineering College of Northeast Petroleum University, Daqing 163318, China;2. Daqing Oilfield Production Technology Institute of Daqing Oilfield Limited Company, Daqing 163318, China; 3. Petroleum Engineering Research Institute of Petro China Dagang Oilfield Company, Tianjin 300280, China0 |
| Abstract：The synthesis of a zwitterionic star-shaped copolymer (AM-co-DMMPPS-co-SiO2) with anti-polyelectrolyte behavior containing AM, DMMPPS and NSFM was achieved by SET-LRP in aqueous solution. The effects of total monomer concentration, initiator amount, monomer molar ratio, catalyst amount and ligand amount on the polymerization were determined by orthogonal experiments. The optimum polymerization conditions were established through experiments as the followings: a ratio of n(AM)∶n(DMMPPS)∶n(Gly-Br3)∶n(CuBr)∶n(Me6TREN) =2660.0∶140.0∶1∶2.5∶11.2, a total concentration of [AM]+[DMMPPS] was 3.5 mol·L-1. On the basis of orthogonal experiment, the optimum dosage of NSFM was 0.5% of monomers by single factor experiment. The prepared acrylamide copolymers have been characterized by FTIR spectroscopy, 1H NMR spectrometry, which confirmed the star-shaped polymer was the target product and NSFM participated in the single electron transfer radical polymerization. The solution properties of zwitterionic star polymers showed that the star-shaped copolymer exhibited a shear thickening property when the shear rate exceeded a critical value of 100 S-1. With the increasing of salt concentration, the intrinsic viscosity of AM/DMMPPS/NSFM increased, which had the effect of antipolyelectrolyte solution. It was also found that AM/DMMPPS/NSFM exhibited good temperature resistance. |
| Key words：zwitterionic polymers; anti-polyelectrolyte solution behavior; nano-SiO2; shear thickening propertys; single electron transfer living radical polymerization; star-shaped copolymer |
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基金項目：國家自然科學(xué)基金項目（51474068），國家自然科學(xué)基金重點(diǎn)基金項目（51834005），黑龍江省大學(xué)生創(chuàng )新創(chuàng )業(yè)訓練項目（201910220054），東北石油大學(xué)校培育基金項目（5xm123442）
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作者簡(jiǎn)介：羅瑞峰（2000—），男，湖南長(cháng)沙人，研究方向：高分子化學(xué)，活性自由基聚合（E-mail：ruifeng_luo@163.com）。
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聯(lián) 系 人：王 玲，講師（E-mail：wang.ling.1014@163.com）。
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收稿日期：2020-06-06
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