Citation: Miao Bie, Jie Yang, Xun-di Yin, Yong-zhong Bao. Micellization Behavior of Poly(vinylidene chloride-methyl acrylate)-b-Poly(acrylic acid) Block Copolymers[J]. Acta Polymerica Sinica, ;2016, (4): 443-448. doi: 10.11777/j.issn1000-3304.2016.15228 shu

Micellization Behavior of Poly(vinylidene chloride-methyl acrylate)-b-Poly(acrylic acid) Block Copolymers

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State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027

Corresponding author: Yong-zhong Bao,
Received Date: 24 August 2015
Revised Date: 5 November 2015

Poly(vinylidene chloride-methyl acrylate)-b-poly(acrylic acid) (PVDC-b-PAA) block copolymers with different compositions were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization, and their micellization behavior was investigated by dynamic light scattering, surface tension measurement and transmission electron microscope analysis.It was found that PVDC-b-PAA copolymers could be self-assembled to form transparent micelle aqueous solutions by dissolving of the copolymer in N,N-dimethylformamide and dialysis by water.The critical micelle concentrations of PVDC-b-PAA copolymers were ranged from 9.9 to 19.6 mg/L, and increased with increasing PAA content in the copolymer.The micelles were almost in spherical morphology with a size range of 70.9~110.9 nm and with narrow size distributions.The pH value of aqueous phase affected the zeta potential and aggregation of micelles.When pH value was decreased from 3 to 1, the zeta potential of micelles was changed from a negative value to a positive value, the aggregation degree and the average size of micelle aggregates were rapidly increased, and the size distribution became wider.
- Vinylidene chloride,
- Acrylic acid,
- Block copolymer,
- Micellization,
- Particle size,
- Aggregation
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沈阳化工大学材料科学与工程学院沈阳 110142