Synthesis of a cationic polyacrylamide by a photocatalytic surface-initiated method and evaluation of its flocculation and dewatering performance: nano-TiO2 as a photo initiator
作者： Yongzhi Liu , Huaili Zheng , Yili Wang , Xinyu Zheng , Moxi Wang
DOI: 10.1039/C8RA05622F
关键词:
摘要: In the face of complex water quality changes, application existing cationic polyacrylamide has been largely limited. this study, a series polyacrylamides (TPADs) with excellent flocculation/dewatering performance and low dosage were synthesized through photocatalytic surface initiation using acrylamide (AM) acryloyloxyethyl trimethylammonium chloride (DAC) as monomers nano-TiO2 an initiator. Characterization Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (1H NMR) thermogravimetric/differential scanning calorimetry (TG/DSC) electron microscopy (SEM) was used to analyze structural morphological properties TPADs. The mechanism described study on TPADs shows that method could obtain copolymer extra-high intrinsic viscosity. Furthermore, flocculation dewatering PADs investigated in micro-polluted turbidity test sludge test. experimental results indicated showed satisfactory removal by virtue strong charge neutralization bridging effect. attributed surface-initiated Therefore, it is expected open up new methods synthesis polymeric flocculants for broad variety applications.
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