Synthesis and Characterization of Furans and Levulinates Polymers: Derived from Cellulosic Carbohydrates via Aldol CondensationJin Tan, Chenguang Wang, Qi Zhang and Longlong MaE3S Web Conf., 53 (2018) 03011DOI: https://doi.org/10.1051/e3sconf/20185303011