"Grafting polycaprolactone diol onto cellulose nanocrystals via click c" by Ling Zhou, Hui He et al.

Faculty Publications

Title

Grafting polycaprolactone diol onto cellulose nanocrystals via click chemistry: Enhancing thermal stability and hydrophobic property

Authors

Ling Zhou, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China; School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA, 70803, USA; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
Hui He, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China. Electronic address: pshuihe@scut.edu.cn.
Mei-Chun Li, School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA, 70803, USA.
Siwei Huang, College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China; College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
Changtong Mei, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
Qinglin Wu, School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA, 70803, USA. Electronic address: wuqing@lsu.edu.

Document Type

Article

Publication Date

6-1-2018

Abstract

Hydrophobic and thermally-stable cellulose nanocrystals (CNCs) were synthesized by polycarpolactone diol (PCL diol) grafting via click chemistry strategy. The synthesis was designed as a three-step procedure containing azide-modification of CNCs, alkyne-modification of PCL diol and sequent copper(I)-catalyzed azide-alkyne cycloaddition reaction. The structure of azide-modified CNCs and alkyne-modified PCL diol, the structure, hydrophobic ability and thermal stability of click products CNC-PCL were characterized. FTIR, XPS and H NMR results indicated a successful grafting of the N groups onto the CNCs, synthesis of PCL diol-CCH, and formation of the CNC-PCL material. CNC-PCL had enhanced dispersion in the non-polar solvent chloroform owing to the well-maintained microscale size and PCL-induced hydrophobic surface. The thermal stability of CNC-PCL was largely increased due to the grafting of thermally-stable PCL. This work demonstrates that click chemistry is an attractive modification strategy to graft CNCs with polyester chains for further potential application in polymer composites.

Publication Source (Journal or Book title)

Carbohydrate polymers

First Page

331

Last Page

341

Recommended Citation

Zhou, L., He, H., Li, M., Huang, S., Mei, C., & Wu, Q. (2018). Grafting polycaprolactone diol onto cellulose nanocrystals via click chemistry: Enhancing thermal stability and hydrophobic property. Carbohydrate polymers, 189, 331-341. https://doi.org/10.1016/j.carbpol.2018.02.039

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