Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (4): 849.doi: 10.7503/cjcu20180577

• Polymer Chemistry • Previous Articles    

Preparation and Properties Characterization of PDA/PVDF UV Shielding Composite Membranes

XIONG Zhengrong1, DONG Li1,2, LIU Xiangdong1, YANG Yuming1,2,*()   

  1. 1. CAS Key Laboratory of High-Performance Synthetic Rubber and Its Composite Materials, Changchun Institute of Applied Chemistry, Changchun 130022, China
    2. School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, China
  • Received:2018-08-16 Online:2019-01-12 Published:2019-01-12
  • Contact: YANG Yuming E-mail:ymyang@ciac.ac.cn

Abstract:

Polydopamine(PDA) particles were fabricated via the self-polymerization of dopamine in the solution. Then PDA/PVDF(polyvinylidenefluoride) composite membranes with excellent ultraviolet(UV) shielding property were prepared through solution casting method using PDA particles as fillers. The chemical structure, morphology and absorbance of the as-prepared PDA particles were characterized by means of Fourier transform infrared spectroscopy(FTIR), scanning electron microscopy(SEM) and UV-Vis spectrophotometer. Furthermore, the structure, thermal property, wettability and UV shielding performance of the obtained PDA/PVDF composite membranes were confirmed by X-ray diffraction(XRD), differential scanning calorimetry(DSC), thermal gravimetric analyzer(TGA), water contact angle(CA) measurement and UV aging oven. The results displayed that the diameter of PDA particles were around 160 nm. The crystallinity and contact angle of the PVDF membranes became smaller after being modified with PDA particles. When the content of PDA was 5%, the UV transmittance of the as-obtained PDA/PVDF film decreased to less than 1% in the wavelength range of 200—400 nm. Consequently, the composite film could block all of the UV light, indicating the excellent ultraviolet shielding property.

Key words: Polyvinylidene fluoride, Polydopamine, Ultraviolet shielding, Composite membranes

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