Cellulose nanofibril/mineral composites induced by H-bond/ionic coordination in co-refining system

Shunxi Song; Sheng Qiang; Jiantao Liang; Lin Li; Yujie Shi; Jingyi Nie; Ting Chen; Shuangquan Yao; Meiyun Zhang

doi:10.1016/j.carbpol.2022.119425

Cellulose nanofibril/mineral composites induced by H-bond/ionic coordination in co-refining system

Carbohydr Polym. 2022 Aug 1:289:119425. doi: 10.1016/j.carbpol.2022.119425. Epub 2022 Mar 31.

Authors

Shunxi Song¹, Sheng Qiang², Jiantao Liang², Lin Li³, Yujie Shi², Jingyi Nie⁴, Ting Chen², Shuangquan Yao⁵, Meiyun Zhang⁶

Affiliations

¹ College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of papermaking Technology and Specialty paper Development, Shaanxi University of Science & Technology, Xi'an 710021, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China. Electronic address: 15829913710@163.com.
² College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of papermaking Technology and Specialty paper Development, Shaanxi University of Science & Technology, Xi'an 710021, China.
³ Asia Symbol (Shandong) Pulp and Paper Co., Ltd, Rizhao, China.
⁴ College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of papermaking Technology and Specialty paper Development, Shaanxi University of Science & Technology, Xi'an 710021, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
⁵ Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
⁶ College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of papermaking Technology and Specialty paper Development, Shaanxi University of Science & Technology, Xi'an 710021, China. Electronic address: myzhang@sust.edu.cn.

PMID: 35483839
DOI: 10.1016/j.carbpol.2022.119425

Abstract

Mineral fillers hinder cellulosic fiber bonding and thus limit the increase of filler content in paper. Herein, precipitated calcium carbonate (PCC)/cellulose nanofibrils (CNF) composites were fabricated by a facile and efficient strategy, i.e., co-refining process (CRP). During this process, CNF and PCC were activated by mechanochemical effect and formed encapsulation structure by calcium ion coordination and hydrogen bonding. The encapsulation structure and H-bond/ionic coordination interactions not only endowed the composite with excellent size stability but also enhanced interfacial interaction between composite fillers and cellulosic fibers. Compare with the paper filled with only PCC, PCC + CNF mixture, the tensile index of the cellulosic paper containing PCC/CNF composite was increased by 44.48% and 12.14%, respectively. These results not only provide a facile and scalable approach to increase interaction between cellulosic fiber and mineral filler but also create more possibilities for special paper-based materials with requiring high content of inorganic materials.

Keywords: Cellulose nanofibrils; Co-refining process; Filler engineering; Mineral filler; Paper strength.

MeSH terms

Calcium Carbonate / chemistry
Cellulose* / chemistry
Ions
Minerals
Nanofibers* / chemistry

Substances

Ions
Minerals
Cellulose
Calcium Carbonate