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第 40 卷第 2 期                             精   细   化   工                                  Vol.40, No.2
             20 23 年 2 月                             FINE CHEMICALS                                 Feb.  2023


              功能材料
                               基于动态硼酸酯键/氢键的自修复


                                      导电水凝胶的制备及性能



                                                                *
                                             姚   雪,张素风 ,钱立伟
                                   (陕西科技大学  轻工科学与工程学院,陕西  西安  710021)

                 摘要:通过 4-(溴甲基)苯基硼酸(PBA)和 1-乙烯基咪唑(IL)的烷基化反应制备了苯硼酸离子液体(PBA-IL)
                 单体。在 2,2,6,6-四甲基哌啶-1-氧自由基(TEMPO)氧化纳米纤维素(CNF)的存在下,通过丙烯酰胺(AM)
                 和 PBA-IL 的一步聚合反应,制备了一种具有半互穿网络结构的自修复导电水凝胶(PAM/PBA-IL/CNF)。通过
                 1 HNMR 对 PBA-IL 的化学结构进行表征;通过 FTIR、XPS、SEM 对水凝胶的化学结构和物理形貌进行表征,
                 并测试了水凝胶的拉伸性能、自修复性能和导电性能。结果表明,PBA-IL 单体和水凝胶成功制备,且水凝胶具
                 有典型的多孔结构。PAM/PBA-IL3/CNF 水凝胶〔3 代表 PBA-IL 含量为 30%,以 AM、PBA-IL、CNF 悬浮液、
                 N,N'-亚甲基双丙烯酰胺(MBA)溶液、过硫酸铵(APS)的总绝干质量为基准〕的断裂应力为 335.1 kPa、断裂
                                                2
                 伸长率为 1969.5%、断裂能为 12.1 kJ/m 、自修复效率为 95.43%(150 min)、电导率为 6.38 mS/cm。
                 关键词:导电水凝胶;CNF;离子液体;自修复;硼酸酯键;氢键;功能材料
                 中图分类号:TQ352.4;TQ326.4                    文献标识码:A
                 文章编号:1003-5214 (2023) 02-0272-08         开放科学 (资源服务)  标识码 (OSID):



                       Preparation and properties of self-healing conductive hydrogels
                                based on dynamic borate bonds/hydrogen bonds


                                                                  *
                                          YAO Xue, ZHANG Sufeng , QIAN Liwei
                 (College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science  &  Technology, Xi'an
                 710021, Shaanxi, China)


                 Abstract: A self-healing conductive hydrogel (PAM/PBA-IL/CNF) with semi-interpenetrating network was
                 prepared via one-step polymerization of acrylamide (AM) and phenylboronic acid ionic liquid (PBA-IL)
                 monomer, which was  prepared  by alkylation of 4-(bromomethyl)phenylboronic acid (PBA) and
                                                       1
                 1-vinylimidazole (IL) and characterized by  HNMR, in the presence of 2,2,6,6-tetramethylpiperidine-
                 1-oxygen radical (TEMPO)-oxidized cellulose nanofibrils (CNF). The chemical structure and  physical
                 morphology of the  hydrogel obtained  were then  characterized  by FTIR, XPS and  SEM, followed by
                 investigations on its tensile property, self-healing property and electrical conductivity. The results indicated
                 both PBA-IL monomer and hydrogel were successfully synthesized with the hydrogel exhibiting a typical
                 porous structure. PAM/PBA-IL3/CNF hydrogel (3 means that the PBA-IL content 30%, based on the total
                 dry mass of AM, PBA-IL, CNF suspension, MBA solution, and APS) displayed a tensile strength of 335.1
                                                                               2
                 kPa, an elongation at  break of 1969.5%,  a breaking  energy of 12.1  kJ/m , a self-healing efficiency of
                 95.43% (150 min), and an ionic conductivity of 6.38 mS/cm.
                 Key words: conductive  hydrogel; CNF; ionic liquids; self-healing;  boronate  bonds; hydrogen  bonds;
                 functional materials




                 收稿日期:2022-07-08;  定用日期:2022-09-05; DOI: 10.13550/j.jxhg. 20220632
                 基金项目:中国-中东欧国家高校联合教育项目(2021099);生物质化学与材料国际联合研究中心(2018GHJD-19);陕西省重点产业
                 创新链项目(2020ZDLGY11-03);陕西省秦创原“科学家+工程师”队伍建设项目(2022KXJ-135)
                 作者简介:姚   雪(1998—),女,博士生。联系人:张素风(1972—),女,教授,E-mail:zhangsufeng@sust.edu.cn。
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