, Volume 26, Issue 3, pp 1747–1755 | Cite as

Mechanical performance and thermal stability of polyvinyl alcohol–cellulose aerogels by freeze drying

  • Ting Zhou
  • Xudong ChengEmail author
  • Yuelei Pan
  • Congcong Li
  • Lunlun GongEmail author
Original Research


Polyvinyl alcohol (PVA)/cellulose nanofibers (CNFs)/Gelatin hybrid organic aerogels were synthesized using a facile and environmentally friendly freeze-drying method. The biobased gelatin acted as a cross-linking agent and combined PVA and CNFs tightly by hydrogen bonds. The composites were characterized and analyzed by various techniques including uniaxial compression test, scanning electron microscopy, as well as thermal conductivity analysis and TGA–DTG analyses. The mechanical properties were strengthened significantly with the introduction of a small amount of gelatin. The modulus of PVA/CNF/G3 was 1.65 MPa, nearly eightfold of the PVA/CNF aerogel and 91 times higher than the neat CNF aerogel. Microstructure analyses revealed the three-dimensional network of the aerogels. The composites also possess good thermal stability, low density, and low thermal conductivity. Therefore they have broad prospects in the field of thermal insulation.

Graphical abstract


Polyvinyl alcohol Cellulose nanofibers Gelatin Aerogel Mechanical properties 



The work supported by National Keypoint Research and Invention Program of the Thirteenth, Anhui Programs for Science and Technology Development (No. 1604a0902175) and Fundamental Research Funds for the Central Universities (Grant No. WK2320000035).


  1. Amonette JE, Matyáš J (2017) Functionalized silica aerogels for gas-phase purification, sensing, and catalysis: a review. Microporous Mesoporous Mater 250:100–119CrossRefGoogle Scholar
  2. Chen HB, Liu B, Huang W, Wang JS, Zeng G, Wu WH, Schiraldi DA (2014) Fabrication and properties of irradiation-cross-linked poly(vinyl alcohol)/clay aerogel composites. ACS Appl Mater Interfaces 6:16227–16236. CrossRefGoogle Scholar
  3. Deng Z, Wang J, Wu A, Shen J, Zhou B (1998) High strength SiO2 aerogel insulation1. J Non-Cryst Solids 225:101–104CrossRefGoogle Scholar
  4. Guo L, Chen Z, Lyu S, Fu F, Wang S (2018) Highly flexible cross-linked cellulose nanofibril sponge-like aerogels with improved mechanical property and enhanced flame retardancy. Carbohydr Polym 179:333–340CrossRefGoogle Scholar
  5. Han J et al (2017) Effects of nanocellulose on the structure and properties of poly(vinyl alcohol)–borax hybrid foams. Cellulose 24:4433–4448CrossRefGoogle Scholar
  6. He S, Huang Y, Chen G, Feng M, Dai H, Yuan B, Chen X (2018) Effect of heat treatment on hydrophobic silica aerogel. J Hazard Mater 362:294–302. CrossRefGoogle Scholar
  7. Javadi A et al (2013) Polyvinyl alcohol–cellulose nanofibrils-graphene oxide hybrid organic aerogels. ACS Appl Mater Interfaces 5:5969–5975CrossRefGoogle Scholar
  8. Jiang F, Hsieh Y-L (2017) Cellulose nanofibril aerogels: synergistic improvement of hydrophobicity, strength, and thermal stability via cross-linking with diisocyanate. ACS Appl Mater Interfaces 9:2825–2834CrossRefGoogle Scholar
  9. Kistler SS (1931) Coherent expanded aerogels and jellies. Nature 127:741CrossRefGoogle Scholar
  10. Lam NT, Chollakup R, Smitthipong W, Nimchua T, Sukyai P (2017) Utilizing cellulose from sugarcane bagasse mixed with poly(vinyl alcohol) for tissue engineering scaffold fabrication. Ind Crops Prod 100:183–197CrossRefGoogle Scholar
  11. Li Z, Gong L, Cheng X, He S, Li C, Zhang H (2016) Flexible silica aerogel composites strengthened with aramid fibers and their thermal behavior. Mater Des 99:349–355CrossRefGoogle Scholar
  12. Li Y, Wang B, Sui X, Xu H, Zhang L, Zhong Y, Mao Z (2017) Facile synthesis of microfibrillated cellulose/organosilicon/polydopamine composite sponges with flame retardant properties. Cellulose 24:3815–3823CrossRefGoogle Scholar
  13. Liebner F et al (2010) Aerogels from unaltered bacterial cellulose: application of scCO2 drying for the preparation of shaped, ultra-lightweight cellulosic aerogels. Macromol Biosci 10:349–352CrossRefGoogle Scholar
  14. Liu Y, Geever LM, Kennedy JE, Higginbotham CL, Cahill PA, McGuinness GB (2010) Thermal behavior and mechanical properties of physically crosslinked PVA/Gelatin hydrogels. J Mech Behav Biomed Mater 3:203–209CrossRefGoogle Scholar
  15. Maleki H, Durães L, Portugal A (2014) Synthesis of lightweight polymer-reinforced silica aerogels with improved mechanical and thermal insulation properties for space applications. Microporous Mesoporous Mater 197:116–129CrossRefGoogle Scholar
  16. Pääkkö M et al (2007) Enzymatic hydrolysis combined with mechanical shearing and high-pressure homogenization for nanoscale cellulose fibrils and strong gels. Biomacromol 8:1934–1941CrossRefGoogle Scholar
  17. Pan Y et al (2017) Low thermal-conductivity and high thermal stable silica aerogel based on MTMS/water–glass co-precursor prepared by freeze drying. Mater Des 113:246–253CrossRefGoogle Scholar
  18. Rao AP, Rao AV, Pajonk G (2007) Hydrophobic and physical properties of the ambient pressure dried silica aerogels with sodium silicate precursor using various surface modification agents. Appl Surf Sci 253:6032–6040CrossRefGoogle Scholar
  19. Sadeghi A, Pezeshki-Modaress M, Zandi M (2018) Electrospun polyvinyl alcohol/gelatin/chondroitin sulfate nanofibrous scaffold: fabrication and in vitro evaluation. Int J Biol Macromol 114:1248–1256CrossRefGoogle Scholar
  20. Saito T, Nishiyama Y, Putaux J-L, Vignon M, Isogai A (2006) Homogeneous suspensions of individualized microfibrils from TEMPO-catalyzed oxidation of native cellulose. Biomacromol 7:1687–1691CrossRefGoogle Scholar
  21. Saito T, Kimura S, Nishiyama Y, Isogai A (2007) Cellulose nanofibers prepared by TEMPO-mediated oxidation of native cellulose. Biomacromol 8:2485–2491CrossRefGoogle Scholar
  22. Shang K, Liao W, Wang J, Wang Y-T, Wang Y-Z, Schiraldi DA (2015) Nonflammable alginate nanocomposite aerogels prepared by a simple freeze-drying and post-cross-linking method. ACS Appl Mater Interfaces 8:643–650CrossRefGoogle Scholar
  23. Wang Y-T et al (2017) Green approach to improving the strength and flame retardancy of poly (vinyl alcohol)/clay aerogels: incorporating biobased gelatin. ACS Appl Mater Interfaces 9:42258–42265CrossRefGoogle Scholar
  24. Wei TY, Chang TF, Lu SY, Chang YC (2007) Preparation of monolithic silica aerogel of low thermal conductivity by ambient pressure drying. J Am Ceram Soc 90:2003–2007CrossRefGoogle Scholar
  25. Yang D, Li Y, Nie J (2007) Preparation of gelatin/PVA nanofibers and their potential application in controlled release of drugs. Carbohydr Polym 69:538–543CrossRefGoogle Scholar
  26. Yun S, Luo H, Gao Y (2014) Superhydrophobic silica aerogel microspheres from methyltrimethoxysilane: rapid synthesis via ambient pressure drying and excellent absorption properties. RSC Adv 4:4535–4542CrossRefGoogle Scholar
  27. Zheng Q, Cai Z, Gong S (2014) Green synthesis of polyvinyl alcohol (PVA)–cellulose nanofibril (CNF) hybrid aerogels and their use as superabsorbents. J Mater Chem A 2:3110–3118CrossRefGoogle Scholar

Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Fire ScienceUniversity of Science and Technology of ChinaHefeiPeople’s Republic of China

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