By Lisa Brannon-Peppas
Lately, there was a veritable explosion of analysis and improvement in consumer-oriented fields that make the most of polymeric fabrics which take in quite a lot of water. those fields surround the education, characterization and commercialization of separation platforms, pharmaceutical and private care items reminiscent of little one diapers, female items, incontinence items and lots of different similar parts. The polymeric fabrics used in those functions are referred to as absorbent or superabsorbent fabrics due to their skill to swell quickly and to keep huge volumes of water, urine and different organic fluids. the purpose of this e-book is to introduce the basics of polymer constitution and swelling as on the topic of polymers used for those superabsorbent fabrics. within the box of absorbence, specific cognizance is given to crosslinked constructions which swell to greater than fifty instances their preliminary weight in water or electrolytic options. The booklet additionally offers descriptions of novel functions of superabsorbent fabrics in addition to an in depth research of water delivery in crosslinked polymers
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Extra resources for Absorbent Polymer Technology
Peppas, Polymer, 28 (1987) 998. H. Yamasaki, Y Sumida and S. Harada, U. S. patent 4,459,396, 1984. J. FloryandJ. , Chem. , 11 (1943)521. A. A. M. A. Mktchian, Eur. Polym. , 11 (1975) 153. 45 PREPARATION AND CHARACTERIZATION OF CROSSLINKED NETWORKS HYDROPHILIC L. O. Box 708, Greenfield, IN 46140, USA SUMMARY In preparing and evaluating polymers for use as absorbent materials, it is critical to know those parameters which will govern the nature of the final polymer. This chapter presents different methods of producing and characterizing crosslinked polymers.
Modulus versus the extent of swelling for two samples of polyacrylate superabsorbent poylmers. POLYACRYLATES BY FREE-RADICAL POLYMERIZATION The structure of a polymeric network is ultimately determined by the method of synthesis. The monomer and crosslinker concentrations, the initiator type and concentrations, the relative reactivities of the monomers, the specific solvent and reaction temperature are all significant factors. Commercially, the rate of the polymerization reaction is also of importance, since it directly affects the volumetric efficiency of the production equipment.
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Absorbent Polymer Technology by Lisa Brannon-Peppas