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Synthesis of Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) Copolymers with Controllable Block Structures via Reversible Addition Fragmentation Polymerization from Aminolyzed Poly(lactic acid)
Yu, Wenwen; Zhu, Lijing; Shi, Jiangao; Zhao, Cunting
2018
发表期刊INTERNATIONAL JOURNAL OF POLYMER SCIENCE
摘要Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) (PLA-PDMAEMA) copolymers were synthesized from aminolyzed PLA via reversible addition fragmentation (RAFT) polymerization. PLA undergoes aminolytic degradation with ethylenediamine (EDA). The kinetics of the aminolysis reaction of PLA at different temperatures and EDA concentrations was investigated in detail. The molar masses of products rapidly decreased in the initial stage at low aminolytic degree. Meanwhile, reactive -NH2 and -OH groups were introduced to the end of shorter PLA chains and used as sites to further immobilize the RAFT agent. PLA-PDMAEMA block copolymers were synthesized. A pseudo-first-order reaction kinetics was observed for the RAFT polymerization of PDMAEMA at a low conversion. By controlling the aminolysis reaction of PLA and RAFT polymerization degree of DMAEMA, the length distributions of the PLA and PDMAEMA blocks can be controlled. This method can be extended to more systems to obtain block copolymers with controllable block structure.
关键词Anticancer Drug-delivery Biomedical Applications Pla Degradation Micelles Performance Membranes Surface Soil Compost
学科领域Chemistry
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16905
专题2018专题
推荐引用方式
GB/T 7714
Yu, Wenwen,Zhu, Lijing,Shi, Jiangao,et al. Synthesis of Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) Copolymers with Controllable Block Structures via Reversible Addition Fragmentation Polymerization from Aminolyzed Poly(lactic acid)[J]. INTERNATIONAL JOURNAL OF POLYMER SCIENCE,2018.
APA Yu, Wenwen,Zhu, Lijing,Shi, Jiangao,&Zhao, Cunting.(2018).Synthesis of Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) Copolymers with Controllable Block Structures via Reversible Addition Fragmentation Polymerization from Aminolyzed Poly(lactic acid).INTERNATIONAL JOURNAL OF POLYMER SCIENCE.
MLA Yu, Wenwen,et al."Synthesis of Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) Copolymers with Controllable Block Structures via Reversible Addition Fragmentation Polymerization from Aminolyzed Poly(lactic acid)".INTERNATIONAL JOURNAL OF POLYMER SCIENCE (2018).
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