Can ultrasound be used as initiators in free radical polymerization?

Ultrasound, plasma, microwave and ultraviolet (UV) light can be used as initiators in the free radical polymerization process . Zhao et al., synthesized a cationic and hydrophobic polymer for oily wastewater treatment via ultrasound-induced free-radical polymerization.

Which cationic flocculants are synthesized by UV-induced free-radical polymerization?

Synthesis of cationic flocculants Poly [2- (acryloyloxy)ethyl]trimethylammonium chloride (PAETAC) and poly (3-acrylamidopropyl)trimethylammonium chloride (PAmPTAC) was synthesized by UV-induced free-radical polymerization in an aqueous solution ( [M] = 1.2 M).

Can cationic polymer flocculants be developed using photo-polymerization technique?

In this study, we utilized recent developments in the photo-polymerization technique to develop two cationic polymer flocculants by polymerizing two types of monomers for harvesting Chlorella vulgaris (C. vulgaris) and Porphyridium purpureum (P. purpureum), which are freshwater and marine microalgae species, respectively.

What is photo-induced radical polymerization?

Photo-induced radical polymerization has been considered a versatile technology for the synthesis of polymers possessing pre-designed composition, functionalities, and structures. This platform technology can tolerate a variety of monomers, solvents, and initiators.

Does cationic polyacrylamide flocculate Phaeodactylum tricornutum?

However, Nguyen et al., observed high flocculation efficiency of marine microalgae Phaeodactylum tricornutum with a cationic polyacrylamide flocculant (FO3801). The discrepancy in the literature suggested that a future flocculation study using one type of polymer with multiple marine species. 4. Conclusions

How do cationic polymers cause flocculation?

In the flocculation process by cationic polymers, charge neutralization of microalgal cells initiates floc formation. High molecular weight polymer (i.e. very long chain of monomers) bridges destabilised microalgae flocs , , .