Page 68 - 《精细化工》2021年第6期
P. 68

第 38 卷第 6 期                             精   细   化   工                                  Vol.38, No.6
             202 1 年 6 月                             FINE CHEMICALS                                 June  2021


              功能材料
                       CO 响应性双丙酮丙烯酰胺-co-乙烯胺温敏
                             2

                                    共聚物的制备及其相变行为



                                        王   毓,任俊鹏,赵   君,周进康

                                     (贵州师范学院  化学与材料学院,贵州  贵阳  550018)

                 摘要:以双丙酮丙烯酰胺(DAAM)和 N-乙烯基甲酰胺(NVF)为主要原料,过硫酸铵和亚硫酸氢钠为引发剂,
                 通过水溶液自由基聚合反应制备了无规共聚物 P(DAAM-co-NVF),并在碱性条件下水解得到共聚物 P(DAAM-
                                  1
                 co-VAm)。采用 FTIR、HNMR、GPC 和 TGA 对共聚物进行了表征,同时以 UV-Vis 和 DSC 对 P(DAAM-co-NVF)
                 和 P(DAAM-co-VAm)水溶液的相转变行为进行研究。结果表明,共聚物 P(DAAM-co-NVF)和 P(DAAM-co-VAm)
                 具有可调控的低临界溶解温度(LCST),通过改变共聚物组成和溶液质量分数可以调控 P(DAAM-co-NVF)和
                 P(DAAM-co-VAm)的LCST;在P(DAAM-co-VAm)水溶液中通入CO 2 可以调控聚合物的LCST;P(DAAM-co-VAm)
                 水溶液的 LCST 具有可逆的 CO 2 /N 2 开关响应性。
                 关键词:双丙酮丙烯酰胺;N-乙烯基甲酰胺;温敏性;CO 2 响应性;LCST 可调控性;功能材料
                 中图分类号:TQ423. 92      文献标识码:A      文章编号:1003-5214 (2021) 06-1130-06



                     Synthesis and phase transition behaviors of temperature-sensitive
                    poly(diacetone acrylamide-co-vinylamine) with CO 2 responsiveness


                                    WANG Yu, REN Junpeng, ZHAO Jun, ZHOU Jinkang
                    (School of Chemistry and Materials Science, Guizhou Education University, Guiyang 550018, Guizhou, China)


                 Abstract: Random copolymer poly(diacetone acrylamide-co-N-vinylformamide) [P(DAAM-co-NVF)] was
                 synthesized by free radical polymerization in aqueous solution using diacetone acrylamide (DAAM) and
                 N-vinylformamide (NVF) as monomers, ammonium persulfate and sodium hydrogen sulfite as initiator.
                 Poly(diacetone acrylamide-co-vinylamine) [P(DAAM-co-VAm)] was obtained by hydrolysis of P(DAAM-
                                                                                            1
                 co-NVF) under alkaline conditions. The resultant copolymers were characterized by FTIR,  HNMR, GPC
                 and TGA. The phase transition behaviors of P(DAAM-co-NVF) and P(DAAM-co-VAm) were evaluated by
                 UV-Vis spectroscopy and DSC. The results showed that copolymers P(DAAM-co-NVF) and P(DAAM-co-
                 VAm) solutions  had regulatory lower critical solution  temperature  (LCST), which was controlled  by
                 changing copolymer composition and solution mass fraction. Moreover, the LCST of P(DAAM-co-VAm)
                 aqueous solution could be regulated by bubbling CO 2 into the system. The LCST of P(DAAM-co-VAm)
                 aqueous solution had reversible response to CO 2 and N 2 switching.
                 Key words: diacetone acrylamide; N-vinylformamide; thermosensitivity; CO 2 -responsivity; LCST adjustability;
                 functional materials



                 温度刺激响应聚合物(又称温敏聚合物)是一                          (UCST)   [3-4] 或最低临界溶解温度(LCST)           [5-6] ,
            类能够对温度的刺激作出响应的功能材料                    [1-2] ,此类    这一性质使温度刺激响应聚合物在生化产物分离、
            聚合物具有的独特性质是存在最高临界溶解温度                              蛋白质吸附和释放、可控药物释放等领域有潜在的


                 收稿日期:2020-11-30;  定用日期:2021-02-03; DOI: 10.13550/j.jxhg.20201116
                 基金项目:国家自然科学基金项目(21464005);贵州省自然科学基金项目(黔科合基础[2018]1122, [2019]1252);贵州省教育厅青年
                 科技人才基金项目(黔教合 KY 字[2018]263)
                 作者简介:王   毓(1977—),男,教授,E-mail:mailwyu@163.com。
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