Study of crosslinking copolymerization and its fractal behavior of styrene-divinylbenzene

✍ Scribed by Ju Zuo; Dehai Liang; Shaofeng Ran; Tianhong Chen; Aizhen Niu; Binglin He

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 200 KB
• Volume: 68
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19980418)68:3<363::aid-app3>3.0.co;2-h

✦ Synopsis

The crosslinking copolymerization of styrene-divinylbenzene (DVB) with 6% (w/w) DVB was investigated quantitatively by liquid chromatography (LC), viscosity, GPC, and static and dynamic laser light. Through these experiments, reaction order, mechanism, and evolution of molecular weight, size, polydispersity, and branching of the copolymer chains during the gelation were measured. The critical exponents g, b, d, t, and n p of the gelation were calculated. Furthermore, fractal behavior of the copolymer was evidenced firmly; the progression of fractal dimensions of these species following the gelation were also obtained using the dependence of intensity scattered on angles by synchrotron small angle X-ray scattering. A methodology for characterization of gelation forming network polymer is provided objectively. ᭧ 1998