pp 1–16 | Cite as

Effect of lignin on the performance of biodegradable cellulose aerogels made from wheat straw pulp-LiCl/DMSO solution

  • Jianyu Xia
  • Zhulan LiuEmail author
  • Yan Chen
  • Yunfeng CaoEmail author
  • Zhiguo Wang
Original Research


To expound the effects of existing endogenous or exogenous lignin on the performance of cellulose-based aerogels, both the cellulose aerogels and composite aerogels were fabricated by the dissolution-regeneration process by using LiCl/DMSO solvent system. The varying content of endogenous and exogenous lignin could lead to different aggregation states of cellulose, hemicellulose and lignin, thus causing different micromorphology and mechanical properties of cellulose aerogels and composite aerogels. The increased endogenous lignin in lignocellulose restricted the dissociation of cellulose and hemicellulose in dissolving process, which led to the appearance of enlarged pores, and then resulted in the decreased mechanical strength. However, for composite aerogels, externally added exogenous lignin deposited on the cellulose chains and then restricted the movement of polymer chains. It could not only bring about the increased pore size of aerogels, but also help to improve the mechanical strength, which was different from that of cellulose aerogels. Furthermore, two types of aerogels with higher lignin content both exhibited better adsorption capacity for methylene blue, especially for composite aerogel. This study provides a feasible way to tailor the morphology and physical properties of the aerogels by controlling the existential state or content of lignin.


Cellulose aerogel Composite aerogel Lignin LiCl/DMSO Dissolution-regeneration 



Jianyu Xia would like to thank the National Natural Science Foundation of China (No. 31600473, 31670591), the Natural Science Foundation of Jiangsu Province (BK20160928), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), the Graduate student innovation project of Jiangsu Province (KYZZ16_0317) for the financial support.


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food ScienceNanjing Forestry UniversityNanjingChina

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