Chemical synthesis of perfectly isotactic and high melting bacterial poly(3-hydroxybutyrate) from bio-sourced racemic cyclic diolide.
Chemical synthesis of perfectly isotactic and high melting bacterial poly(3-hydroxybutyrate) from bio-sourced racemic cyclic diolide.
复制标题
DOI:
10.1038/s41467-018-04734-3
复制
发表时间:
2018-06-11
影响因子:
16.6
通讯作者:
Chen EY
中科院分区:
文献类型:
--
作者:
Tang X;Chen EY
Bacterial poly(3-hydroxybutyrate) (P3HB) is a perfectly isotactic, crystalline material possessing properties suitable for substituting petroleum plastics, but high costs and low volumes of its production are impractical for commodity applications. The chemical synthesis of P3HB via ring-opening polymerization (ROP) of racemic β-butyrolactone has attracted intensive efforts since the 1960s, but not yet produced P3HB with high isotacticity and molecular weight. Here, we report a route utilizing racemic cyclic diolide (rac-DL) derived from bio-sourced succinate. With stereoselective racemic catalysts, the ROP of rac-DL under ambient conditions produces rapidly P3HB with perfect isotacticity ([mm] > 99%), high melting temperature (Tm = 171 °C), and high molecular weight (Mn = 1.54 × 105 g mol−1, Đ = 1.01). With enantiomeric catalysts, kinetic resolution polymerizations of rac-DL automatically stops at 50% conversion and yields enantiopure (R,R)-DL and (S,S)-DL with >99% e.e. and the corresponding poly[(S)-3HB] and poly[(R)-3HB] with high Tm = 175 °C. Bacterial poly(3-hydroxybutyrate) possesses physical and mechanical properties suitable for substituting high-performance petroleum plastics but current production is costly and slow. Here the authors produce poly(3-hydroxybutyrate) with similar properties via ring-opening polymerization of bio-derived racemic cyclic diolide.
登录
查看更多内容
影响因子:
5.5
作者:
Hong, Miao;Tang, Xiaoyan;Chen, Eugene Y. -X.
通讯作者:
Chen, Eugene Y. -X.
影响因子:
56.9
作者:
Gross, RA;Kalra, B
通讯作者:
Kalra, B
影响因子:
1.6
作者:
Char, Joelle;Kulyk, Olesia G.;Thomas, Christophe M.
通讯作者:
Thomas, Christophe M.
影响因子:
4.9
作者:
Ajellal, Noureddine;Durieux, Guillaume;Gauvin, Regis M.
通讯作者:
Gauvin, Regis M.
DOI:
10.1002/pol.1971.150091003
发表时间:
1971-01-01
期刊:
JOURNAL OF POLYMER SCIENCE PART A-1-POLYMER CHEMISTRY
影响因子:
--
作者:
AGOSTINI, DE;LANDO, JB;SHELTON, JR
通讯作者:
SHELTON, JR