Preparation of Highly Reactive Lignin by Ozone Oxidation: Application as Surfactants with Antioxidant and Anti-UV Properties
[1];
[4];
[5]
- Beijing Univ. of Chemical Technology (China); Beijing Univ. of Chemical Technology, Xiamen (China)
- Washington State Univ., Pullman, WA (United States)
- Beijing Univ. of Chemical Technology (China); Beijing Univ. of Chemical Technology, Xiamen (China); South China Univ. of Technology (SCUT), Guangzhou (China)
- Rensselaer Polytechnic Inst., Troy, NY (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Enhancement of lignin reactivity plays a critical role in the chemical modification of lignin. In the current study, a simple, green, and effective method, of ozone oxidation, was developed to improve the reactivity of enzymatic lignin through the formation of carboxyl groups. The resultant ozonate of enzymatic lignin (OzEL) indicated a higher reactivity of esterification. We report the ozonated enzymatic lignin grafted to polyethylene glycol (OzEL-PEGs) afforded satisfactory water solubility, good surface activity, and good emulsifying properties. The remaining phenolic hydroxyl groups in OzEL-PEGs also maintain excellent antioxidant and UV absorbing properties. This ozone oxidation process provides an effective and green method for the preparation of highly reactive lignin, which can be applied in the manufacture of a multifunctional lignin polymer.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE; National Key Research and Development Program of China; State Key Laboratory of Pulp and Paper Engineering
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1649353
- Journal Information:
- ACS Sustainable Chemistry & Engineering, Vol. 8, Issue 1; ISSN 2168-0485
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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