Funding for this research was provided by:
Key project of Tianjin Natural Science Foundation (16JCZDJC39700)
Innovation fund for young teachers of Tianjin University of Science and Technology (2016LG19)
State Key Laboratory of Pulp and Paper Engineering (201502)
Article History
Received: 2 January 2019
Accepted: 4 June 2019
First Online: 12 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.