To reduce the wastewater pollution problem, silica particles that have resulted from simultaneous sulfuric acidification of water glass solution serve as the pore-forming agent for preparing superabsorbent PVF/SiO 2 foam in this study. This is a departure from the traditional porous PVF/starch foam's manufacture method. The pore structure of PVF/SiO 2 foam is very different from that of PVF/starch foam. The effect of the concentration of these pore-forming agents on the pore structure, mechanical modulus, and water adsorption capacity of PVF/starch and PVF/SiO 2 foams are investigated in this study. V C 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39894.

Different with the conventional method of manufacturing poly(vinyl formal) (PVF) porous foam by using the pore‐forming agents such as wheat or potato starches, a novel method without using the pore‐forming agent is introduced in this article. Through the help of images taken by a scanning electron microscope, the formation process of the present PVF foam will be discussed in terms of the spinodal decomposition (SD) phase separation principle. Additionally, the effect of poly(vinyl alcohol) concentration and reaction temperature on the pore structure of the PVF foam will be investigated. Moreover, the water adsorption capacities of the PVF foams obtained by the present method will be studied in details through the analyses of pore‐size distribution, mechanical modulus, and thermal property. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41270.

No abstract

No abstract

No abstract