复合紫外光引发体系制备PDA及其结构表征
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X703.1

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江苏省自然科学基金(BK20160779);江苏省高校自然科学基金(16KJB610008);南京工程学院校基金(YKJ201527)


Preparation and characterization of PDA synthesized through a complex UV initiated system
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    摘要:

    采用氧化还原偶氮复合引发剂和一种紫外光强度由弱变强的复合紫外光引发体系,以二甲基二烯丙基氯化铵(DMDAAC)和丙烯酰胺(AM)为单体,通过共聚合反应制备P (DMDAAC-AM)(PDA)。反应体系将引发活化能不同的引发剂与不同紫外光强进行耦合,可维持反应体系内一定浓度的自由基,使反应进行更为均匀彻底,达到有效提高PDA特性粘度的目的。研究了合成过程中的相关因素对PDA特性粘度的影响规律,并对其合成条件进行优化。结果表明:当偶氮引发剂浓度为0.3‰、0.4‰、紫外光强度先为8.5 mW/cm2,再升高至13 mW/cm2、AM与DMDAAC质量比为8∶2、总单体质量为20%时,PDA特性粘度最高,达到了19.60 dL/g。核磁共振氢谱和红外光谱表明PDA确实由AM和DMDAAC共聚而成。通过差热热重分析,证明制备的PDA具有良好的热稳定性。絮凝应用实验表明,自制的PDA具有良好的絮凝性能。

    Abstract:

    In this study, a complex UV initiation system was established by utilizing low light intensity and then high light intensity with redox initiator and azo initiator compound. Acrylamide (AM) and diallyldimethylammonium chloride (DMDAAC) were used as monomers to copolymerize P (DMDAAC-AM) (PDA). Initiators with different activation energies were injected to the system, and UV light with were different intensities is controlled to generate radicals at different times. Therefore, high intrinsic viscosity PDA could be prepared as a consequence of even and thorough polymerization. Effect of factors on the intrinsic viscosity of PDA was investigated, and the optimal synthesis condition was obtained. The results indicated that the highest intrinsic viscosity of 19.60 dL/g was reached at V-50 concentration of 0.3‰, (NH4)2S2O8-NaHSO3 concentration of 0.4‰, low light intensity of 8.5 mW/cm2 then increased to 13 mW/cm2, mass ratio between AM and DMDAAC of 8:2 and total monomer mass percentage of 20%. It was confirmed that PDA was the copolymer of AM and DMDAAC through proton nuclear magnetic resonance spectroscopy and Fourier-transform infrared spectroscopy. In addition, the prepared PDA possessed an acceptable thermostability and favorable flocculation performance which can be confirmed through thermos gravimetric analysis and the flocculation experiment.

    参考文献
    [1] GUAN Q Q, ZHENG H L, ZHAI J, et al. Preparation, characterization, and flocculation performance of P(acrylamide-co-diallyldimethylammonium chloride) by UV-initiated template polymerization[J]. Journal of Applied Polymer Science,2015,132(13):1-7.
    [2] LU X, XU Y H, SUN W Q, et al. UV-initiated synthesis of a novel chitosan-based flocculant with high flocculation efficiency for algal removal[J]. Science of the Total Environment, 2017,609:410-418.
    [3] 郑怀礼, 寿倩影, 李香, 等. 紫外光引发聚合P(AM-MAPTAC)及其响应面优化制备[J]. 土木建筑与环境工程, 2017,39(1):118-124. ZHENG H, B, SHOU Q, LI X, et al. Ultraviolet-initiated synthesis of P(AM-MAPTAC) and optimization of preparation conditions with response surface method[J]. Journal of Civil,Architectural & Environmental Engineering, 2017,39(1):118-124.(in Chinese)
    [4] 唐晓旻, 张世欣, 谢俊怡, 等. 超声波引发合成阳离子聚丙烯酰胺及其表征[J]. 土木建筑与环境工程, 2017, 39(4):83-88. TANG X M, ZHANG S X, XIE J Y, et al. Ultrasonic initiated synthesis and characterization of cationic polyacrylamide[J]. Journal of Civil,Architectural & Environmental Engineering, 2017, 39(4):83-88.(in Chinese)
    [5] 赵松梅, 刘昆元. 二甲基二烯丙基氯化铵/丙烯酰胺共聚物的合成[J]. 北京化工大学学报(自然科学版), 2005, 32(4):29-32. ZHAO S M, LIU K Y. Synthesis of copolymer of DMDAAC and AM[J]. Journal of Beijing University of Chemical Technology(Natural Science Edition), 2005, 32(4):29-32.(in Chinese)
    [6] AGARWAL V, MCLEAN D, HORNE J, et al. Chemometric study of graft copolymerization of guar-g-(acrylamide-co-diallyl dimethylammonium chloride)[J]. Journal of Applied Polymer Science,2013,127(5):3970-3979.
    [7] GUAN Q Q, ZHENG H L, ZHAI J, et al. Effect of template on structure and properties of cationic polyacrylamide:Characterization and mechanism[J]. Industrial & Engineering Chemistry Research,2014,53(14):5624-5635.
    [8] GUAN Q Q, ZHENG H L, XU J, et al. Effect of charge density on structural characteristics of cationic polyacrylamide:Models based on reactivity ratio and characterization[J]. Journal of Polymer Materials,2016,33(2):365-377.
    [9] SEABROOK S A, GILBERT R G. Photo-initiated polymerization of acrylamide in water[J]. Polymer, 2007, 48(16):4733-4741.
    [10] MA J Y, SHI J, DING H C, et al. Synthesis of cationic polyacrylamide by low-pressure UV initiation for turbidity water flocculation[J]. Chemical Engineering Journal, 2017,312:20-29.
    [11] ZHENG H L, SUN Y J, ZHU C J, et al. UV-initiated polymerization of hydrophobically associating cationic flocculants:Synthesis, characterization, and dewatering properties[J]. Chemical Engineering Journal, 2013, 234:318-326.
    [12] MA J Y, FU K, JIANG L Y, et al. Flocculation performance of cationic polyacrylamide with high cationic degree in humic acid synthetic water treatment and effect of kaolin particles[J]. Separation and Purification Technology,2017,181:201-212.
    [13] BI K Z, ZHANG Y J. Kinetic study of the polymerization of dimethyldiallylammonium chloride and acrylamide[J]. Journal of Applied Polymer Science,2012,125(2):1636-1641.
    [14] WANG L J, LI G D, ZHANG Y Q, et al. Synthesis and evaluation of P(AM-b-DADMAC) as fixative for dissolved and colloidal substances[J]. Journal of Applied Polymer Science,2013,130(6):4040-4046.
    [15] LI X, ZHENG H L, GAO B Y, et al. Optimized preparation of micro-block CPAM by response surface methodology and evaluation of dewatering performance[J]. Rsc Advances,2017,7(1):208-217.
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引用本文

关庆庆,陈尧,周祈昕,钱宇,唐晓旻,康晓荣,徐进.复合紫外光引发体系制备PDA及其结构表征[J].土木与环境工程学报(中英文),2019,41(3):147-153. Guan Qingqing, Chen Yao, Zhou Qixin, Qian Yu, Tang Xiaomin, Kang Xiaorong, Xu Jin. Preparation and characterization of PDA synthesized through a complex UV initiated system[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2019,41(3):147-153.10.11835/j. issn.2096-6717.2019.061

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  • 收稿日期:2018-08-27
  • 在线发布日期: 2019-06-03
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