๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Graft copolymerization of acrylonitrile, methyl methacrylate and vinyl acetate on bleached holocellulose by use of ceric ions

โœ Scribed by F. E. Okieimen; K. I. Idehen


Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
322 KB
Volume
39
Category
Article
ISSN
0323-7648

No coin nor oath required. For personal study only.

โœฆ Synopsis


Graft copolymers of acrylonitrilc, methyl metliacrylate and vinyl acetate on blcached holocellulose were obtained by the use of ceric ions. The ceric ion concentration, a t which maximum graft levels were attained, depends on the type of monomer. The dependence of the extent of graft copolytncr formation on the monomer type is explained in terms of the difference in the effective concentration of the monomers a t the cellulose-water interface.

I'fropfcopolymerisation von Acrylnitril, Methylmethacrylat und I'inylacetat auf gebleichte IIolocellulose mittels Cerionen

I'fropfcopolymere VOII Acrylnitril, Methylmethacrylat und Vinylacetat auf gebleichter Ilolocellulose wurden unter Verwendung von Cerionen hcrgestellt. Die Cerionen-Konzcntration, bei der maximale Pfropfgrade erreicht werden, Iiangt vom jeweiligen Monomer ab. Die Abhingigkeit der Ausbeutc an I'fropfcopolymeren vom Monomertyp wird mit Unterschieden der effektiven Monomerkonzentration an der Grenzflaclie Cellulosc/Wasser erklart.

C o n o a u . ~e p u a a y ~ npueuelcoii alcpuaonumpuaa, Memuaaemalcpmama u eulcwayemama na orn6e~wnnym Zoaoqeaamaoay c no~oucwo uonoe yepua

npMBMTbIe COnOJlllMepbI aKpMJIOHlTTpMJla, MeTMJlMeTaKpMJIaTa H BMHllJIaqeTaTa Ha OT6eJIeHHOfi rOJIOqeJIJIIOJIO8e IIOJIJ'qeHbI C IIOMOUbIO MOHOB qeplTH. HOHqeHTpaqHH MOHOB qepMH, IIpM KOTOPOfi IIOJIJ'qeHa ~a ~6 o ~r b m a f i CTeIIeHb npeBpaqeHHH IIpMBlTTOrO COIIOJlHMepa, 3aBHCHT OT POAa MOHOMepa M 06%HCHmTCR pa3JlMW4HMH B@@eKTHBHOfi KoHqeHTpaqm MoiIoMepa Ha nosepxHocm paafiena qenn10~103a/no~a.


๐Ÿ“œ SIMILAR VOLUMES


Influence of N-acetylglycine on the kine
โœ C. M. Patra; B. C. Singh ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 474 KB ๐Ÿ‘ 1 views

The influence of N-acetylglycine on the kinetics of graft copolymerization of acrylonitrile (AN) and methyl methacrylate (MMA) onto chemically modified jute fibers was studied in the temperature range 40-60ยฐC. The optimum conditions for grafting have been determined by studying the effects of concen