采用传统化学氧化聚合法制备聚苯胺/银纳米复合材料,主要研究了银离子对聚苯胺形貌、微结构及导电性能的影响规律.SEM和XRD测试结果表明,银离子浓度对聚苯胺微观形貌及结晶度有显著的影响.随着银离子浓度增加,聚苯胺由微球向纤维束转变,其结晶度有所增加.UV-Vis和FT-IR分析结果表明,随着银离子浓度的增加,聚苯胺分子链中氧化单元数与还原单元数的比例增加.电导率测试结果表明, 当聚苯胺与银离子浓度的摩尔比为10时,聚苯胺/银纳米复合材料的电导率达到最大值1.62 S·cm-1,是纯聚苯胺的18倍.
Approach to control polyaniline(PANI) morphologies through doping Ag ions during the conventional chemical oxidative polymerization was reported, and the effects of silver ions on morphologies and properties of PANI was investigated. SEM and XRD analysis results indicate that the morphologies of PANI change from micro-spheres to fibrillar bundles with increasing silver nitride concentration. UV-Vis absorption spectroscopy and FT-IR analysis prove that the balance of oxidized and reduced units of PANI becomes large with increasing silver nitride concentration. The conductivity test prove that the conductivity increases with increasing silver nitride concentration up to 10 (molar ratio of PANI to silver ion), the conductivity of PANI/Ag is 1.62 S·cm-1, which is about 18 times higher than that of pure PANI.
参考文献
| [1] | Zhang X;Goux W J;Manohar SK .[J].Journal of the American Chemical Society,2004,126:4502. |
| [2] | Wu C G;Bein T .[J].Science,1994,264:1757. |
| [3] | Martin C R .[J].Chemistry of Materials,1996,8:1739. |
| [4] | Wang CW.;Li MK.;Li HL.;Wang Z. .Well-aligned polyaniline nano-fibril array membrane and its field emission property[J].Chemical Physics Letters,2001(5-6):431-434. |
| [5] | Qiu H;Wan M;Matthews B et al.[J].Macromolecules,2001,34:675. |
| [6] | Wei Z;Zhang L;Yu M et al.[J].Advanced Materials,2003,15:1382. |
| [7] | Huang L M;Wang Z B;Wang H T et al.[J].Journal of Materials Chemistry,2002,12:388. |
| [8] | Choi SJ.;Park SM. .Electrochemical growth of nanosized conducting polymer wires on gold using molecular templates[J].Advanced Materials,2000(20):1547-1549. |
| [9] | MacDiarmid A G;Jones W E;Norris I D et al.[J].Synthetic Metals,2001,119:27. |
| [10] | He H X;Li C Z;Tao N J .[J].Applied Physics Letters,2001,78:811. |
| [11] | Huang J X;Kaner R B .[J].Journal of the American Chemical Society,2004,126:851. |
| [12] | Chiou N R;Epstein A J .[J].Advanced Materials,2005,17:1679. |
| [13] | Bourdo SE;Berry BC;Viswanathan T .Catalytic effects of selected transition metal ions in the synthesis of lignosulfonic acid doped polyaniline[J].Journal of Applied Polymer Science,2005(1):29-33. |
| [14] | Huang J X;Kaner R B .[J].Angewandte Chemie International Edition,2004,43:5817. |
| [15] | Shipley CP.;Salata OV.;Etchells M.;Dobson PJ.;Christou V.;Capecchi S. .Orange electroluminescence from a divalent europium complex[J].Advanced Materials,1999(7):533-536. |
| [16] | Wu CG.;Yeh YR.;Hsiao HT. .Electroless surface polymerization of polyaniline films on aniline primed ITO electrodes: a simple method to fabricate good modified anodes for polymeric light emitting diodes[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2001(9):2287-2292. |
| [17] | Male N A H;Salata O V;Christou V .[J].Synthetic Metals,2002,126:7. |
| [18] | Zhou S;Wu T;Kan JQ .Effect of Co2+, Ni2+, Cu2+, or Zn2+ on properties of polyaniline nanoparticles[J].Journal of Applied Polymer Science,2007(1):652-658. |
| [19] | Wang HL;Li WG;Jia QX;Akhadov E .Tailoring conducting polymer chemistry for the chemical deposition of metal particles and clusters[J].Chemistry of Materials: A Publication of the American Chemistry Society,2007(3):520-525. |
| [20] | Blinova, NV;Stejskal, J;Trchova, M;Sapurina, I;Ciric-Marjanovic, G .The oxidation of aniline with silver nitrate to polyaniline-silver composites[J].Polymer,2009(1):50-56. |
| [21] | Sarma T K;Chattopadhyay A .[J].Journal of Physical Chemistry A,2004,108:7837. |
| [22] | Sarma T K;Chowdhury D;Paul A et al.[J].Chemical Communications,2002,21:1048. |
| [23] | Pillalamarri S K;Blum F D;Tokuhiro A T et al.[J].Chemistry of Materials,2005,17:5941. |
| [24] | Liang L;Liu J;Windisch C F et al.[J].Angewandte Chemie International Edition,2002,41:3665. |
| [25] | Liu J;Lin Y;Liang L et al.[J].Chemistry-A European Journal,2003,9:604. |
| [26] | Sun YG.;Yin YD.;Mayers BT.;Herricks T.;Xia YN. .Uniform silver nanowires synthesis by reducing AgNO3 with ethylene glycol in the presence of seeds and poly(vinyl pyrrolidone)[J].Chemistry of Materials,2002(11):4736-4745. |
| [27] | Xia HS.;Wang Q. .Ultrasonic irradiation: A novel approach to prepare conductive polyaniline/nanocrystalline titanium oxide composites[J].Chemistry of Materials,2002(5):2158-2165. |
| [28] | Caswell K K;Bender C M;Murphy C J .[J].Nano Letters,2003,3-5:667. |
| [29] | Khanna PK;Singh N;Charan S;Viswanath AK .Synthesis of Ag/polyaniline nanocomposite via an in situ photo-redox mechanism[J].Materials Chemistry and Physics,2005(1):214-219. |
| [30] | Chen SA.;Hwang GW. .WATER-SOLUBLE SELF-ACID-DOPED CONDUCTING POLYANILINE - STRUCTURE AND PROPERTIES[J].Journal of the American Chemical Society,1995(40):10055-10062. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%