Preparation of amphiphilic grated copolymer PS-g-PEO film and its surface wettability

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Journal of Dalian Maritime University ›› 2015, Vol. 41 ›› Issue (3) : 100-103.

PENG Qin,NIU Yu-fang,LIAO Ming-yi,JIN Mei-hua*

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Abstract

Polystyrene grafted poly (ethylene oxide) (PS-g-PEO) copolymer film with micro-nano-composite structure is prepared by template. Comparing with the smooth surface prepared by dispensed, the PEO content, the surface morphology of the impact of copolymer film surface wettability are investigated. The contact angle changes of the film are measured with after annealing and water soaking treatment. Annealing and water soaking can make copolymer film surface wettability reversible changed. Copolymer film surface contact angles increased after annealing and decreased after water soaking. Among them the annealing PEO content of 40.9% copolymer smooth surface after water soaking, the film surface contact angle decreased from 65.1º to 53.3º, while the corresponding copolymer film rough surface contact angle decreased from 150.0º to 60.9º, which means the film transformed from superhydrophobic to hydrophilic. PEO chains in different processing conditions have different aggregation. Annealing and water soaking can make the PEO chain segment eversion in the macromolecular chains, lead to reversible change of the film surface wettability.

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amphiphilic grafted copolymer / PS-g-PEO / surface wettability / reversible

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PENG Qin,NIU Yu-fang,LIAO Ming-yi,JIN Mei-hua. Preparation of amphiphilic grated copolymer PS-g-PEO film and its surface wettability[J]. Journal of Dalian Maritime University. 2015, 41(3): 100-103

References

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