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DOI | 10.1126/science.aax8466 |
Stereosequenced crystalline polyhydroxyalkanoates from diastereomeric monomer mixtures | |
Tang, Xiaoyan; Westlie, Andrea H.; Watson, Eli M.; Chen, Eugene Y. -X. | |
2019-11-08 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 366期号:6466页码:754-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Stereoselective polymerization of chiral or prochiral monomers is a powerful method to produce high-performance stereoregular crystalline polymeric materials. However, for monomers with two stereogenic centers, it is generally necessary to separate diastereomers before polymerization, resulting in substantial material loss and added energy cost associated with the separation and purification process. Here we report a diastereoselective polymerization methodology enabled by catalysts that directly polymerize mixtures of eight-membered diolide (8DL) monomers with varying starting ratios of chiral racemic (rac) and achiral meso diastereomers into stereosequenced crystalline polyhydroxyalkanoates with isotactic and syndiotactic stereodiblock or stereotapered block microstructures. These polymers show enhanced ductility and toughness relative to polymers of pure rac-8DL, subject to tuning by variation of the diastereomeric ratio and structure of the 8DL monomers. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496500400053 |
WOS关键词 | RING-OPENING POLYMERIZATION ; STEREOELECTIVE POLYMERIZATION ; BIODEGRADABLE PLASTICS ; BETA-BUTYROLACTONE ; LACTIDE ; BIS(DIMETHYLSILYL)AMIDES ; STEREOCHEMISTRY ; STEREOCONTROL ; COPOLYMERS ; COMPLEXES |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/226188 |
专题 | 环境与发展全球科技态势 |
作者单位 | Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Tang, Xiaoyan,Westlie, Andrea H.,Watson, Eli M.,et al. Stereosequenced crystalline polyhydroxyalkanoates from diastereomeric monomer mixtures[J]. SCIENCE,2019,366(6466):754-+. |
APA | Tang, Xiaoyan,Westlie, Andrea H.,Watson, Eli M.,&Chen, Eugene Y. -X..(2019).Stereosequenced crystalline polyhydroxyalkanoates from diastereomeric monomer mixtures.SCIENCE,366(6466),754-+. |
MLA | Tang, Xiaoyan,et al."Stereosequenced crystalline polyhydroxyalkanoates from diastereomeric monomer mixtures".SCIENCE 366.6466(2019):754-+. |
条目包含的文件 | 条目无相关文件。 |
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