Evaluation of Self-Assembly Pathways to Control Crystallization-Driven Self-Assembly of a Semicrystalline P(VDF-co-HFP)-b-PEG-b-P(VDF-co-HFP) Triblock Copolymer

被引:7
作者
Folgado, Enrique [1 ,2 ]
Mayor, Matthias [2 ]
Ladmiral, Vincent [1 ]
Semsarilar, Mona [2 ]
机构
[1] Univ Montpellier, ENSCM, CNRS, ICGM, Montpellier, France
[2] Univ Montpellier, ENSCM, CNRS, IEM, Montpellier, France
关键词
PVDF; fluoropolymer; self-assembly; CDSA; FIBER-LIKE MICELLES; FLASH NANOPRECIPITATION; PLATELET MICELLES; BLOCK-COPOLYMERS; CORE; 1D; LENGTH; WATER;
D O I
10.3390/molecules25174033
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
To date, amphiphilic block copolymers (BCPs) containing poly(vinylidene fluoride-co-hexafluoropropene) (P(VDF-co-HFP)) copolymers are rare. At moderate content of HFP, this fluorocopolymer remains semicrystalline and is able to crystallize. Amphiphilic BCPs, containing a P(VDF-co-HFP) segment could, thus be appealing for the preparation of self-assembled block copolymer morphologies through crystallization-driven self-assembly (CDSA) in selective solvents. Here the synthesis, characterization by(1)H and(19)F NMR spectroscopies, GPC, TGA, DSC, and XRD; and the self-assembly behavior of a P(VDF-co-HFP)-b-PEG-b-P(VDF-co-HFP) triblock copolymer were studied. The well-defined ABA amphiphilic fluorinated triblock copolymer was self-assembled into nano-objects by varying a series of key parameters such as the solvent and the non -solvent, the self-assembly protocols, and the temperature. A large range of morphologies such as spherical, square, rectangular, fiber-like, and platelet structures with sizes ranging from a few nanometers to micrometers was obtained depending on the self-assembly protocols and solvents systems used. The temperature-induced crystallization-driven self-assembly (TI-CDSA) protocol allowed some control over the shape and size of some of the morphologies.
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页数:17
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