Yasin A. GABR

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126Odbora za oporabu plastike i gume u okvirunedavno ugasle Zajednice za plastiku i gu-mu i pripadaju}u opremu pri Hrvatskoj go-spodarskoj komori.Vrlo se rano uklju~io u rad na izdavanju~asopisa POLIMERI. Bio je urednik rubrike Izsvijeta plastike i gume, urednik za kategori-zirane radove, te zamjenik glavne urednice.Od broja 1/2003. je v. d. glavnoga urednika~asopisa POLIMERI.Me|utim, za sveu~ili{noga nastavnika kojislavi tek pedesetu `ivotnu obljetnicu najve}i}e izazov u narednome razdoblju biti vo-|enje Katedre za preradu polimera. Od vodi-telja i redovitoga profesora zaista se mnogoo~ekuje. Nastavni, znanstveni i stru~ni razvojpodru~ja, te vo|enje kadrovske politike koja}e osigurati kontinuitet razvoja podru~ja po-limerstva. Treba pridodati, osoba na takvupolo`aju mora brinuti o strukovnome ~asopi-su te se posvetiti dru{tvenom i normacijskomradu. O~ekuju se i pove}ane obveze te poja-~ano zalaganje na Fakultetu. Ali u tome je ~ari odgovornost sveu~ili{noga nastavnika unajvi{em zvanju, ~elnika znanstvenoga istrukovnog podru~ja u Hrvatskoj.Zaklju~uju}i prikaz `ivotnoga puta prvogasveu~ili{nog nastavnika koji je temeljito {ko-lovan za svoju znanstveno-nastavnu karije-ru, mo`e se samo po`eljeti da }e iskazani re-zultati u povodu neke naredne obljetnicepokazati da je dosada{nji vrlo uspje{an raz-voj sveu~ili{ne karijere i nastavljen s uspje-hom i ne malim dosezima. Dapa~e!Igor ^ATI]24(2003)2-4 polimeriO B L J E T N I C EERRATA CORRIGE 1/2003, str. 14YASIN A. GABR - Polymerization of 4-(substituted amino)styrene: Part III – spontaneouspolymerization of 4-(benzylamino)styrene saltsL I T E R A T U R A / R E F E R E N C E S1. Barba, N. A., Gabr, Y., Korga, I. D., Manoly, S. F., Pagribnoy, I. L.: Polymeriza-tion of aminostyrenes in acidic medium, Izv. Akad. Nauk Mold. SSR, Ser. Biol.and Khim. Nauk, 4(1987), 66–68.2. Barba, N. A., Manoly, S. F., Korga, I. D. Gabr, Y.: Synthesis and characteriza-tion of some N-phenacylaminostyrenes, Izv. Vozov Khim. and Khim. Tek-hnol.; T 30 12(1987), 96-99.3. Manoly, S. F., Barba, N. A., Gabr, Y., Korga, I. D., Pagribnoy, I. L.: Spectros-copy and characterization of some aminostyrene hydrohalides, Izv. Akad.Nauk Mold. SSR, Ser. Biol. and Khim. Nauk, 3(1988), 63-65.4. Barba, N. A., Gabr, Y., Korga, I. D., Pagribnoy, I. L.: Oligomerization reactionof 4-aminostyrene hydrohalides in aqeous solution, (Kishiniev Un.), Kishi-niev, Mold. Pat. 1000, NIINTI,1988, 12 p.5. Barba, N. A., Gabr, Y., Korga, I. D., Pagribnoy, I. L.: Oligomerization mecha-nism of 4-aminostyrene in acidic medium, (Kishiniev Un.), Kishiniev, Mold.Pat. 1001, NIITI, 1988, 15 p.6. Gabr, Y.: Polymerization of 4-(substitutedamino)styrene: II. Spontaneouspolymerization of 4-(alkylamino)styrene salts, Egypt. Bulletin J. Faculty ofEducation, 18(1993), 195-202.7. Gabr, Y.: Polymerization of 4-(substitutedamino)styrene: Part I- Polymeriza-tion mechanism of 4-(p-substitutedphenacylamino)styrene salts, Indian J.Chem., 33 B(1994), 1107-1109.8. Salamone, J. C., Snider, B., Fitch, B. L.: Polymerization of 4-vinylpyridiniumsalts. III. A clarification of the mechanism of spontaneous polymerization, J.Polym. Sci., A-1(1971)9, 1493-1504.9. Kabanov, V. A., Aliev, K. V., Kargin, V. A.: Specific polymerization of4-vinylpyridine salts, Polym. Sci. USSR, 10(1968)7, 1618-1632.10. Gvozdetzskii, A. N., Kabanov, V. A.: Spectrospecific matrix polymerization of4-vinylpyridinum ions on phosphate macroanions in aquos solution, Vysoko-mol Soedin., B11(1969), 397-398.11. Salamone, J. C., Snider, B., Fitch, B. L.: Quaternary amonium polymers from1,4-diaobicyclo[ 2.2.2] octane, J. Polym. Sci., 8(1970)12, 3495-3501.12. Fox, T. G., Flory, P. J.: Intrinsic viscosity - temperature relationships for poly-isobutylene in various solvents, J. Amer. Chem. Soc., 73(1951), 1909-1915.13. Fox, T. G., Flory, P. J.: Intrinsic viscosity - molecular weight relations for poly-isobutylene, J. Phys. Colloidal Chem., 53(1949), 197-212.FIGURE 6. The dependence of the overall polymerization rate vpin mol-1 min-1 of 4-(benzylamino)styrene salts on the monomerconcentration ¢M£ in molL-1. Polymerization temperature 40 C.From studying the effect of monomer concentration on the rates ofpolymerization (as shown in Figure 6), it was confirmed that theoverall rate of polymerization (vp) correlated with monomer con-centration, where the logarithm of the polymerization rates wereplotted against the monomer concentration. All points lie on a sin-gle straight line, the slope of which is 0.51. This leads to a specificrelationship between the overall polymerization rate (vp) and theinitial monomer concentration of vp¢M£0.51.Finally, the bove results showed that the rate of polymerization of4-(benzylamino)styrene salts increases with an increase of the po-larity of the solvent with the polymerization temperature depend-ing on the nature of the halogen atom but with no significant effectof the substituents in benzyl moiety on the rate of polymerization.Acknowledgment / ZahvalaThe author gratefully acknowledges the support and encourage-ment of Professor M. A. AlKhader and Professor R. M. Abdel-Rah-man during the course of this work.

Polymerization of 4-(substituted amino)styrene: Part III – spontaneous polymerization of 4-(benzylamino)styrene salts

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