Abstract
The development of polymeric hydrogels with new functionalities is becoming an aspiration in various fields. Here we report a simple method to fabricate a conductive polyacrylamide (PAM)-based hydrogel by the incorporation of carbon nanorubes (CNTs). However, the major challenge for these hydrogels is CNT aggregation in PAM, which decreases both mechanical and electrical properties of the composite hydrogels. Inclusion of cellulose nanofibers (CNFs), is expected to disperse the CNTs well, thereby reinforcing the PAM hydrogels. Hence, by mixing the CNFs and CNTs in the AM hybrid solutions, a PAM/CNF/CNT composite hydrogel is prepared through in situ polymerization. Specifically, with incorporation of 1 wt% CNF and 1 wt% CNT into PAM, the PAM/CNF/CNT-1 hydrogel, with an electrical conductivity of 8.5 × 10−4 S/cm, shows a threefold higher fracture tensile strength than the pure PAM hydrogel. Given the improved mechanical properties and electrical conductivity, the use of CNF as a reinforcing agent for both PAM and CNT provide a versatile method to fabricate conductive hydrogels, and has potential to expand their application in the field of bio-medical engineering and electrical devices.
Graphic abstract
Similar content being viewed by others
References
Abdul Rashid ES, Muhd Julkapli N, Yehye WA (2018) Nanocellulose reinforced as green agent in polymer matrix composites applications. Polym Adv Technol 29:1531–1546
Abe K, Iwamoto S, Yano H (2007) Obtaining cellulose nanofibers with a uniform width of 15 nm from wood. Biomacromol 8:3276–3278
Ahmed EM (2015) Hydrogel: preparation, characterization, and applications: a review. J Adv Res 6:105–121
Chen C, Li D, Abe K, Yano H (2018a) Formation of high strength double-network gels from cellulose nanofiber/polyacrylamide via NaOH gelation treatment. Cellulose 25(9):5089–5097
Chen W, Yu H, Lee SY, Wei T, Li J, Fan Z (2018b) Nanocellulose: a promising nanomaterial for advanced electrochemical energy storage. Chem Soc Rev 47:2837–2872
Chen C, Li D, Abe K, Yano H (2019a) Insect cuticle-mimetic hydrogels with high mechanical properties achieved via the combination of chitin nanofiber and gelatin. J Agric Food Chem 67(19):5571–5578
Chen C, Li D, Abe K, Yano H (2019b) Bioinspired hydrogels: quinone crosslinking reaction for chitin nanofibers with enhanced mechanical strength via surface deacetylation. Carbohyd Polym 207:411–417
De France KJ, Hoare T, Cranston ED (2017) Review of hydrogels and aerogels containing nanocellulose. Chem Mater 29:4609–4631
Deligkaris K, Tadele TS, Olthuis W, van den Berg A (2010) Hydrogel-based devices for biomedical applications. Sens Actuators B Chem 147:765–774
Ding C, Cai C, Yin L, Wu Q, Pan M, Mei C (2019) Mechanically adaptive nanocomposites with cellulose nanocrystals: strain-field mapping with digital image correlation. Carbohyd Polym 211:11–21
Duan G, Fang H, Huang C, Jiang S, Hou H (2018) Microstructures and mechanical properties of aligned electrospun carbon nanofibers from binary composites of polyacrylonitrile and polyamic acid. J Mater Sci 53(21):15096–15106
Fei G, Wang Y, Wang H, Ma Y, Guo Q, Huang W, Yang D, Shao Y, Ni Y (2019) Fabrication of bacterial cellulose/polyaniline nanocomposite paper with excellent conductivity, strength, and flexibility. ACS Sustain Chem Eng 7:8215–8225
Fernandes RMF, Buzaglo M, Regev O, Furo I, Marques EF (2017) Mechanical agitation induces counterintuitive aggregation of pre-dispersed carbon nanotubes. J Colloid Interface Sci 493:398–404
Fu LH, Qi C, Ma MG, Wan P (2019) Multifunctional cellulose-based hydrogels for biomedical applications. J Mater Chem B 7:1541–1562
Gao S, Tang G, Hua D, Xiong R, Han J, Jiang S et al (2019) Stimuli-responsive bio-based polymeric systems and their applications. J Mater Chem B 7:709–729
Hamedi MM, Hajian A, Fall AB, HaKansson K, Salajkova M, Lundell F et al (2014) Highly conducting, strong nanocomposites based on nanocellulose-assisted aqueous dispersions of single-wall carbon nanotubes. ACS Nano 8(3):2467–2476
Hosseini H, Kokabi M, Mousavi SM (2018) Conductive bacterial cellulose/multiwall carbon nanotubes nanocomposite aerogel as a potentially flexible lightweight strain sensor. Carbohyd Polym 201:228–235
Koga H, Saito T, Kitaoka T, Nogi M, Suganuma K, Isogai A (2013) Transparent, conductive, and printable composites consisting of TEMPO-oxidized nanocellulose and carbon nanotube. Biomacromol 14:1160–1165
Kumar A, Rao KM, Han SS (2018) Mechanically viscoelastic nanoreinforced hybrid hydrogels composed of polyacrylamide, sodium carboxymethylcellulose, graphene oxide, and cellulose nanocrystals. Carbohyd Polym 193:228–238
Li M-C, Wu Q, Song K, Lee S, Qing Y, Wu Y (2015) Cellulose nanoparticles: structure–morphology–rheology relationships. ACS Sustain Chem Eng 3:821–832
Li M-C, Wu Q, Song K, Cheng HN, Suzuki S, Lei T (2016) Chitin nanofibers as reinforcing and antimicrobial agents in carboxymethyl cellulose films: influence of partial deacetylation. ACS Sustain Chem Eng 4:4385–4395
Liu Y, Kumar S (2014) Polymer/carbon nanotube nano composite fibers—a review. ACS Appl Mater Interfaces 6:6069–6087
Liu YJ, Cao WT, Ma MG, Wan P (2017) Ultrasensitive wearable soft strain sensors of conductive, self-healing, and elastic hydrogels with synergistic “soft and hard” hybrid networks. ACS Appl Mater Interfaces 9:25559–25570
Liu S, Stupp SI, Olvera de la Cruz M (2018) Anisotropic contraction of fiber-reinforced hydrogels. Soft Matter 14:7731–7739
Pramanik C, Nepal D, Nathanson M, Gissinger JR, Garley A, Berry RJ, Davijani A, Kumar S, Heinz H (2018) Molecular engineering of interphases in polymer/carbon nanotube composites to reach the limits of mechanical performance. Compos Sci Technol 166:86–94
Tang Y, He Z, Mosseler JA, Ni Y (2014) Production of highly electro-conductive cellulosic paper via surface coating of carbon nanotube/graphene oxide nanocomposites using nanocrystalline cellulose as a binder. Cellulose 21:4569–4581
Xu ZY, Li JY (2018) Enhanced swelling, mechanical and thermal properties of cellulose nanofibrils (CNF)/poly(vinyl alcohol) (PVA) hydrogels with controlled porous structure. J Nanosci Nanotechnol 18:668–675
Xu X, Liu F, Jiang L, Zhu JY, Haagenson D, Wiesenborn DP (2013) Cellulose nanocrystals vs. cellulose nanofibrils: a comparative study on their microstructures and effects as polymer reinforcing agents. ACS Appl Mater Interfaces 5:2999–3009
Xu S, Yu W, Jing M, Huang R, Zhang Q, Fu Q (2017) Largely enhanced stretching sensitivity of polyurethane/carbon nanotube nanocomposites via incorporation of cellulose nanofiber. J Phys Chem C 121:2108–2117
Xu CY, Shi XM, Guo L, Wang X, Wang XY, Li JY (2018a) Optimization of graphene conductive ink with 73 wt% graphene contents. J Nanosci Nanotechnol 18(6):4014–4021
Xu Z, Jiang X, Tan S, Wu W, Shi J, Zhou H, Chen P (2018b) Preparation and characterisation of CNF/MWCNT carbon aerogel as efficient adsorbents. IET Nanobiotechnol 12:500–504
Yang J, Han C-R, Zhang X-M, Xu F, Sun R-C (2014) Cellulose nanocrystals mechanical reinforcement in composite hydrogels with multiple cross-links: correlations between dissipation properties and deformation mechanisms. Macromolecules 47:4077–4086
Yang J, Xie H, Chen H, Shi Z, Wu T, Yang Q, Xiong C (2018) Cellulose nanofibril/boron nitride nanosheet composites with enhanced energy density and thermal stability by interfibrillar cross-linking through Ca2+. J Mater Chem A 6:1403–1411
Zhang D, Cai J, Xu W, Dong Q, Li Y, Liu G, Wang Z (2019) Synthesis, characterization and adsorption property of cellulose nanofiber-based hydrogels. J For Eng 4(02):92–98
Zhou S, Zhou G, Jiang S, Fan P, Hou H (2017) Flexible and refractory tantalum carbide–carbon electrospun nanofibers with high modulus and electric conductivity. Mater Lett 200:97–100
Acknowledgments
We thank the National Natural Science Foundation of China (NSFC 31901254, 31670555), Natural Science Foundation of Jiangsu Province (CN) (BK20170925), Innovation Fund for Young Scholars of Nanjing Forestry University (CX 2017001), Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) for financial support.
Author information
Authors and Affiliations
Corresponding authors
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Chen, C., Wang, Y., Meng, T. et al. Electrically conductive polyacrylamide/carbon nanotube hydrogel: reinforcing effect from cellulose nanofibers. Cellulose 26, 8843–8851 (2019). https://doi.org/10.1007/s10570-019-02710-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10570-019-02710-8