Citation: Wei Zhao, Chuan-Yang Li, Chun-Ji Wu, Xin-Li Liu, Ze-Huai Mou, Chang-Guang Yao, Dong-Mei Cui. Synthesis of Ultraviolet Absorption Polylactide via Immortal Polymerization of rac-Lactide Initiated by a Salan-yttrium Catalyst[J]. Chinese Journal of Polymer Science, ;2018, 36(2): 202-206. doi: 10.1007/s10118-018-2050-x shu

Synthesis of Ultraviolet Absorption Polylactide via Immortal Polymerization of rac-Lactide Initiated by a Salan-yttrium Catalyst

Wei Zhao ^a,c,† ,
Chuan-Yang Li ^a,b,† ,
Chun-Ji Wu ^a ,
Xin-Li Liu ^a ,
Ze-Huai Mou ^a,b ,
Chang-Guang Yao ^a,b ,
Dong-Mei Cui ^a,,

a.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
b.
University of Chinese Academy of Sciences, Changchun Branch, Changchun 130022, China
c.
College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China

Corresponding author: Dong-Mei Cui, dmcui@ciac.ac.cn

^†

Received Date: 6 September 2017
Accepted Date: 22 September 2017
Available Online: 27 November 2017

A highly efficient strategy for the synthesis of polylactide with the UV absorption ability was established by employing a Salan-yttrium complex (acting as a fast runing catalyst) combined with large excess hydroxyl functionalized benzophenone, BP'-OH. During polymerization, BP'-OH, acting as the chain transfer agent, attached to the active rare-earth metal catalyst via a rapid-reversible exchange reaction to initiate the polymerization. Thus, more polyester chains appeared to grow from one active metal species, and the UV absorption fragments were incorporated into the polymer chains at specific sites, in situ. A high productivity up to 1000 mol_LA/mol_(Salan-Y) was successfully achieved and 100 BP'-labeled PLA chains grew from each active metal center.
- Yttrium catalyst,
- Ring-opening polymerization,
- Polylactide,
- Ultraviolet absorption
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