Organic macromolecular hygroscopic material is a new type of functional macromolecular material, which was originally developed from super absorbent resin. It has excellent moisture absorption and moisture retention properties. It is a single water-based resin modified by chemical and physical methods. It absorbs water with hydrophilic groups in molecules. The ability of organic macromolecule hygroscopic materials to absorb water in the air is higher than that of single inorganic hygroscopic materials. The hygroscopic capacity can reach more than 70%, the hygroscopic speed can reach 2mg/g · min, and there is no corrosion, pollution, and renewable [1~3]. In addition, the diversity of product forms (powder, granular, strip or transparent film) of organic macromolecular hygroscopic materials can be applied to different applications. Meet different moisture absorption requirements.
PP ribbon Its molecular chain has the same side group acylamine as the acrylamide unit number. Acylamino groups easily form hydrogen bonds with water or substances containing - OH groups (natural fibers, proteins, soils and minerals), resulting in strong adsorption. Because of its strong hygroscopicity, PAM is regarded as a single class of organic macromolecular hygroscopic materials. At present, hygroscopic materials at home and abroad have the weakness of poor hygroscopicity and inability to regenerate and recycle, and no one systematically studies organic macromolecular hygroscopic materials. In this paper, the effects of various polymerization conditions on the hygroscopicity of PAM were systematically studied, and a better polymerization process was obtained. This will be of guiding significance for the development of hygroscopic materials with high hygroscopic speed, large hygroscopic capacity and no corrosion in the future.
