copolymerization


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copolymerization

[‚kō·pə‚lim·ə·rə′zā·shən]
(chemistry)
A polymerization reaction that forms a copolymer.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The ratio of papers published in the field of copolymerization of CL with LL to all published articles regarding the anionic polymerization of CL is negligible.
As mentioned above, although DPP and its derivatives were commendably used as a copolymerization unit to modulate the energy-level structure of the oil-soluble conjugated polymer materials [33-38], few publications concerning water-soluble DPP-containing polymers were published [39, 40].
The graft copolymer samples are prepared by graft copolymerization using 3.5 x [10.sup.-5] mol initiator/g dried rubber.
Furthermore, the EDX elemental analysis of p (VST/ MMA/BA) copolymer (Figure 6(c)) further confirmed the presence of tourmaline in the copolymer by surface modification and copolymerization to form p (VST/MMA/BA).
As indicated in Table 1, there were variations in the characteristic absorption bands observed relative to their original starting materials; this has revealed the fact that new bonds might have been formed as a result of copolymerization between chitosan-acrylamide with urea fertilizer and later with silicone oil used as dopant.
AAc) via hydrogen bonding, and the produced peroxide groups may act as initiators in copolymerization step.
Keywords Corrosion protective coatings, Conducting polymer, Poly(aniline-co-o-anisidine), Electrochemical copolymerization, Cyclic voltammetry, Mild steel
Methyl methacrylate (MMA) and styrene (S) monomer with purity ~99.0% (both from Sigma- Aldrich Chemie, Germany) were used for the graft copolymerization. tert-butyl hydroperoxide (tert-BuHP) and tetraethylene pentamine (TEPA) were used as redox initiators (both from Sigma-Aldrich Chemie, Germany).
Chemical modification of cellulose by graft copolymerization has generated interest among researchers because few commoner molecules change significantly a number of characteristics of the original natural polymer [5-8].
In this study the reaction product between merbau extract and formaldehyde is called polymerization, and the reaction product between merbau extract incorporated with resorcinol and formaldehyde is called copolymerization.
Synthesis mechanisms including polycondensation, addition polymerization via ionic and free radical intermediations, and copolymerization are discussed.
Candidate AM-based copolymers suitable for testing can be prepared by copolymerization of AM with another vinyl-type monomers or by the chemical modification of polyacrylamide itself [7].