Studies on Polyacrylate-Starch/Polyaniline Conducting Hydrogel

Author(s): Reetu Prabhakar*, Devendra Kumar.

Journal Name: Current Smart Materials

Volume 4 , Issue 1 , 2019

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Abstract:

Background: The superabsorbent polymers based conducting hydrogel such as polyaniline impregnated polyacrylate-starch hydrogel were synthesized via two -steps interpenetrating polymer network process. In the present work instead of using a synthetic polymer of acrylamide, a biodegradable polymer such as starch has been used with polyacrylate superabsorbent polymer. The main attempt of this work is to analyze the electrical conductivity of resulting hydrogel at varying concentrations of crosslinker, initiator, monomer, and a copolymer for improving the properties of synthesized hydrogel and elaborating the diversity of its utilization.

Methods: The polymerization of aniline was performed through the absorption of aniline monomer into the polymer matrix followed by the addition of initiator/dopant solution. The morphological and structural analysis and thermal stability of the synthesized hydrogel were studied using Scanning Electron Microscopy (SEM), Fourier transform infrared spectroscopy and thermogravimetric analysis (TGA), respectively. The swelling behaviour of the synthesized hydrogel was performed in a different medium.

Results: Electrical conductivity data of polyacrylate-starch/polyaniline (PAANa-starch/PANI) were compared from polyacrylate-co-polyacrylamide/polyaniline P(AANa-co-AM)/PANI hydrogel, which revealed that polyacrylate-starch/polyaniline shows higher conductivity than polyacrylate-co-polyacrylamide/ polyaniline conducting hydrogel. Maximum swelling of the synthesized hydrogel was reported in the basic medium.

Conclusion: It is observed that the addition of starch into the matrix significantly improved the overall properties of hydrogel. The polymerization of aniline was done in-situ with the absorption of aniline monomer into the PAANa-starch polymer matrix followed by soaking in an initiator/dopant solution. The XRD pattern of PAANa-starch/PANI showed a broad peak at 22.8o while no peak was observed in the PAANa-starch gel, implying that PAANa-starch/PANI has a crystalline and more ordered structure. PAANa-starch/PANI has higher conductivity than the P(AANa-co-AM)/PANI hydrogel. This enhanced electrical conductivity in case of PAANa-starch/PANI hydrogel could be due to the more crosslink points of synthetic polymer polyacrylamide between PAANa-PANI hydrogel.

Keywords: Electrical conductivity, polyacrylate, surface morphology, hydrogel, conducting polymers, superabsorbent polymers.

[1]
Omidian, H.; Rocca, J.G.; Park, K. Advances in superporous hydrogels. J. Control. Release, 2005, 102, 3-12.
[2]
Li, G.; Zhao, Y.; Zhang, L.; Gao, M.; Kong, Y.; Yang, Y. Preparation of graphene oxide/polyacrylamide composite hydrogel and its effect on Schwann cells attachment and proliferation. Colloids Surf. B Biointerfaces, 2016, 143, 547-556.
[3]
Li, M.Y.; Guo, Y.; Wei, Y.; Mac Diarmid, A.G.; Lelkes, P.I. Electrospinning polyaniline-contained gelatin nanofibers for tissue engineering applications. Biomaterials, 2006, 27(13), 2705-2715.
[4]
Siddhanta, S.K.; Gangopadhyay, R. Conducting polymer gel: Formation of a novel semi-IPN from polyaniline and crosslinked poly(2-acrylamido-2-methyl propanesulphonicacid). Polym. J., 2005, 46, 2993-3000.
[5]
Small, C.J.; Too, C.O.; Wallace, G.G. Responsive conducting polymer-hydrogel composites. Polym. Gels Netw., 1997, 5, 251-265.
[6]
Wada, H.; Nohara, S.; Iwakura, C. Electrochemical characteristics of electric double layer capacitor using sulfonated polypropylene separator impregnated with polymer hydrogel electrolyte. Electrochim. Acta, 2004, 49, 4871-4875.
[7]
Wu, J.H.; Wei, Y.L.; Lin, J.M.; Lin, S.B. Study on starch-graft-acrylamide/mineral powder superabsorbent composite. Polymer, 2003, 44, 6513-6520.
[8]
Ito, K.; Chuang, J.; Carmen, A.L.; Watanabe, T.; Ando, N.A.; Yu, G. Multiple point adsorption in a heteropolymer gel and the Tanaka approach to imprinting: Experiment and theory. Prog. Polym. Sci., 2003, 28, 1489-1515.
[9]
Tang, Q.; Wu, J.; Sun, H.; Fan, S.; Hu, D.; Lin, J. Superabsorbent conducting hydrogel from poly(acrylamide-aniline) with thermo-sensitivity and release properties. Carbohydr. Polym., 2008, 73, 473-481.
[10]
Tang, Q.; Wu, J.; Lin, J. A multifunctional hydrogel with high conductivity, pH-responsive, thermo-responsive and release properties from polyacrylate/polyaniline hybrid. Carbohydr. Polym., 2008, 73, 315-321.
[11]
Lin, J.; Tang, Q.; Wu, J. The synthesis and electrical conductivity of a polyacrylamide/Cu conducting hydrogel. React. Funct. Polym., 2007, 67, 489-494.
[12]
Lin, J.; Tang, Q.; Wu, J.; Hao, S. The synthesis and electrical conductivity of a polyacrylate/graphite hydrogel. React. Funct. Polym., 2007, 67, 275-281.
[13]
Ali, T.O. The corrosion performance of polyaniline film modified on nickel plated copper in aqueous p-toluenesulfonic acid solution. Surf. Coat. Tech., 2006, 200(12-13), 3918-3925.
[14]
Lin, J.; Tang, Q.; Wu, J.; Sun, H.; Fan, S.; Hu, D. Two-step synthesis and conductivity of polyacrylamide/Cu conducting hydrogel. Polym. Compos., 2009, 30, 1132-1137.
[15]
Tang, Q.; Sun, X.; Wu, J.; Li, Q.; Lin, J. Design and electrical conductivity of poly(acrylic acid-g-gelatin)/graphite conducting gel. Polym. Eng. Sci., 2009, 49, 1871-1878.
[16]
Chauhan, N.P.S.; Jangid, N.K.; Punjabi, P.B. Synthesis and characterization of conducting polyaniline via catalytic oxidative polymerization. Int. J. Polym. Mater. Polym. Biomater., 2013, 62, 550-555.
[17]
Virji, S.H.; Weiller, B.H.; Huang, J.; Blair, R.; Shepherd, H.; Faltens, T. Construction of a polyaniline nanofibre gas sensor. J. Chem. Educ., 2008, 85, 1102-1104.
[18]
Zhang, L.; Wan, M.; Wei, Y. Nanoscale polyaniline fibers prepared by ferric chloride as an oxidant. Macromol. Rapid Commun., 2006, 27, 366-371.
[19]
Sairam, M.; Nataraj, S.K.; Aminabhavi, T.M.; Roy, S.; Madhusoodana, C.D. Polyaniline membranes for separation and purification of gases, liquids, and electrolyte solutions. Separ. Purif. Rev., 2006, 35, 249-283.
[20]
Malhotra, B.D.; Ghosh, S.; Chandra, R. Polyaniline/polymeric acid composite, a novel conducting rubber. J. Appl. Polym. Sci., 1990, 40, 1049-1052.
[21]
Tiwari, A.; Sharma, Y.; Hattori, S.; Terada, D.; Sharma, A.K.; Turner, A.P.F.; Kobayashi, H. Influence of poly(n-isopropylacrylamide)-CNT-polyaniline three-dimensional electrospun microfabric scaffolds on cell growth and viability. Biopolymers, 2013, 99, 334-341.
[22]
Wu, J.; Wei, Y.; Lin, J.; Lin, S. Study on starch-graft-acrylamide/mineral powder superabsorbent composite. Polymer, 2003, 44, 6513-6520.
[23]
Lu, S.; Duan, M.; Lin, S. Synthesis of superabsorbent starch-graft-poly(potassium acrylate-co-acrylamide) and its properties. J. Appl. Polym. Sci., 2003, 88, 1536-1542.
[24]
Li, W.; Zhao, H.; Teasdale, P.R.; John, R. Preparation and characterization of poly(2-acrylamidoglycolic acid-co-acrylamide) hydrogel for selective binding of Cu2+ and application to diffuse gradients in thin films measurements. Polymer, 2002, 43, 4803-4809.
[25]
Patil, R.C.; Patil, S.F.; Mulla, I.S.; Vijayamohanan, K. Effect of protonation media on chemically and electrochemically synthesized polyaniline. Polym. Int., 2000, 49, 189-196.
[26]
Josefowicz, M.E.; Epstein, A.J.; Tang, X. Protonic acid doping of two classes of the emeraldine form of polyaniline. Synth. Met., 1992, 46, 337-340.
[27]
Mahdavinia, G.R.; Pourjavadi, A.; Hosseinzadeh, H. Modified chitosan 4. Superabsorbent hydrogels from poly(acrylic acid-co-acrylamide) grafted chitosan with salt- and pH-responsiveness properties. Eur. Polym. J., 2004, 40, 1399-1407.
[28]
Zhao, Y.; Su, H.; Fang, L.; Tan, T. Superabsorbent hydrogels from poly(aspartic acid) with salt-, temperature- and pH-responsiveness properties. Polymer, 2005, 46, 5368-5367.
[29]
Prabhakar, R.; Kumar, D. Influence of dopant ions on the properties of conducting polyacrylamide/polyaniline hydrogels. Poly. Plast. Technol., 2016, 55, 46-53.
[30]
Tzou, K.; Gregory, R.V. A method to prepare soluble polyaniline salt solution in situ doping of PANI base with organic dopants in polar solvents. Synth. Met., 1993, 53, 365-377.
[31]
Ibrahim, K.A. Synthesis and characterization of polyaniline and poly(aniline-co-nitroaniline) using vibrational spectroscopy. Arab. J. Chem., 2017, 10, 2668-2674.
[32]
Zang, H.; Lu, J.; Wang, X.; Li, J.; Wang, F. From amorphous to crystalline: Practical way to improve electrical conductivity of waterborne conducting polyaniline. Polymer, 2011, 52, 3059-3064.
[33]
Han, M.; Chu, Y.; Han, D.; Liu, Y.J. Fabrication and characterizations of oligopyrrole doped with dodecylbenzenesulfonic acid in reverse microemulsion. Colloid Interf. Sci., 2006, 296, 110-117.
[34]
Sharma, K.; Kaith, B.S.; Kumar, V.; Kalia, S.; Som, S.; Swart, H.C. Gum ghatti based novel electrically conductive biomaterials: A study of conductivity and surface morphology. Express Polym. Lett., 2014, 8, 267-281.
[35]
Tiwari, A.; Singh, V. Microwave-induced synthesis of electrical conducting gum acacia-graft-polyaniline. Carbohydr. Polym., 2008, 74, 427-434.
[36]
Wu, J.; Lin, J.; Zhou, M.; Wei, C. Synthesis and properties of starch-graft-polyacrylamide/clay superabsorbent composite. Macromol. Rapid Commun., 2000, 21, 1032-1034.
[37]
Siddhanta, S.K.; Gangopadhyay, R. Conducting polymer gel: Formation of a novel semi-IPN from polyaniline and crosslinked poly(2-acrylamido-2-methyl propanesulphonicacid). Polymer, 2005, 46, 2993-3000.
[38]
Bajpai, A.K.; Bajpai, J.; Soni, S.N. Preparation and characterization of electrically conductive composites of poly(vinyl alcohol)-g-poly(acrylic acid) hydrogels impregnated with polyaniline (PANI). Express Polym. Lett., 2008, 2, 26-39.


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Article Details

VOLUME: 4
ISSUE: 1
Year: 2019
Page: [36 - 44]
Pages: 9
DOI: 10.2174/2405465804666190313154427

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