In situ synthesis of thermo-responsive ACB triblock terpolymer nanoparticles through seeded RAFT polymerization

被引:8
作者
Li, Quanlong [1 ,2 ]
Li, Lei [1 ,2 ]
Wang, Wenbin [1 ,2 ]
Zhang, Xiaolei [1 ,2 ]
Li, Shentong [1 ,2 ]
Tian, Qian [1 ,2 ]
Liu, Jiaping [3 ]
机构
[1] Jiangsu Res Inst Bldg Sci, State Key Lab High Performance Civil Engn Mat, Nanjing 210008, Peoples R China
[2] Jiangsu Sobute New Mat Co Ltd, Nanjing 211103, Jiangsu, Peoples R China
[3] Southeast Univ, Coll Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China
来源
RSC ADVANCES | 2016年 / 6卷 / 51期
关键词
SOLUBLE BLOCK-COPOLYMERS; EMULSION POLYMERIZATION; MULTICOMPARTMENT NANOPARTICLES; RADICAL POLYMERIZATION; AMPHIPHILIC DIBLOCK; BUTYL ACRYLATE; PARTICLES; STYRENE; STAR; ABC;
D O I
10.1039/c6ra08725f
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Seeded RAFT polymerization is proposed to prepare thermo-responsive ACB triblock terpolymer nanoparticles of poly[N,N-(dimethylamino)ethyl methacrylate]-block-polystyrene-block-poly(N-isopropylacrylamide) (PDMAEMA-b-PS-b-PNIPAM) containing a middle hydrophobic C block and two thermo-responsive blocks A and B. Following this seeded RAFT polymerization, the nanoparticles of the AC diblock copolymer containing a thermo-responsive block of poly[N,N-(dimethylamino)ethyl methacrylate] (PDMAEMA) are prepared through the macro-RAFT agent mediated dispersion polymerization, and then the in situ synthesized AC diblock copolymer nanoparticles are used as seed in the RAFT polymerization, onto which the other thermo-responsive B block of poly(N-isopropylacrylamide) (PNIPAM) is introduced. The synthesized triblock terpolymer nanoparticles contain a hydrophobic core of the middle polystyrene (PS) block and a mixed corona of two thermo-responsive PNIPAM and PDMAEMA blocks. The thermo-response of the PDMAEMA-b-PS-b-PNIPAM nanoparticles is checked, and the morphology of the triblock terpolymer nanoparticles during the thermo-responsive phase transition is detected. The proposed seeded RAFT polymerization is believed to be a valid method to prepare ACB triblock terpolymer nanoparticles containing two thermo-responsive blocks.
引用
收藏
页码:45305 / 45314
页数:10
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