Superhydrophobic and deacidified cellulose/CaCO3-derived granular coating toward historic paper preservation

Xiaochun Ma; Zhaodong Zhu; Haichuan Zhang; Shenglong Tian; Xiaohong Li; Huiming Fan; Shiyu Fu

doi:10.1016/j.ijbiomac.2022.02.179

Superhydrophobic and deacidified cellulose/CaCO₃-derived granular coating toward historic paper preservation

Int J Biol Macromol. 2022 May 15:207:232-241. doi: 10.1016/j.ijbiomac.2022.02.179. Epub 2022 Mar 3.

Authors

Xiaochun Ma¹, Zhaodong Zhu², Haichuan Zhang³, Shenglong Tian², Xiaohong Li⁴, Huiming Fan⁵, Shiyu Fu⁶

Affiliations

¹ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Lingnan Literature Protection Research Center, Guangzhou 510640, China.
² State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
³ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China. Electronic address: fehcz@mail.scut.edu.cn.
⁴ Guangzhou Paper Co., Ltd., Guangzhou 510280, China. Electronic address: lixiaohong@gzpaper.cn.
⁵ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Lingnan Literature Protection Research Center, Guangzhou 510640, China. Electronic address: hmfan@scut.edu.cn.
⁶ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Lingnan Literature Protection Research Center, Guangzhou 510640, China. Electronic address: shyfu@scut.edu.cn.

PMID: 35248608
DOI: 10.1016/j.ijbiomac.2022.02.179

Abstract

Deacidification and surface self-cleaning are of great significance for the long-term preservation of historic literature. Herein, a superhydrophobic self-cleaning coating, derived from nanocellulose coated with CaCO₃ particles is constructed via chemical vapor deposition (CVD) for the first time for the preservation of historic paper. The static contact angle of superhydrophobic paper reached more than 150° and the minimum sliding angle was 6.4°. Deacidification effect was achieved with a desired pH value in the range from 7.50 to 7.77 and the maximum alkali storage was up to 1.235 mol/kg. It is found that the low-cost CaCO₃ nanoparticles can not only remove the acid substances, but also gave the paper function of self-cleaning, which is very great significant for the protection of paper-based relics.

Keywords: CaCO(3) nanoparticles; Deacidification; Historic paper; Self-cleaning; Superhydrophobic.

MeSH terms

Cellulose*
Hydrophobic and Hydrophilic Interactions
Nanoparticles* / chemistry
Surface Properties

Substances

Cellulose