✦ LIBER ✦

The mechanism of initiation in the free radical polymerization of N-vinylcarbazole and N-vinylpyrrolidone

✍ Scribed by S. Bottle; W.K. Busfield; I.D. Jenkins; S. Thang; E. Rizzardo; D.H. Solomon

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 359 KB
Volume: 25
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(89)90027-x

No coin nor oath required. For personal study only.

✦ Synopsis

The reactions of N-vinylcarbazole and of N-vinylpyrrolidone with benzoyl peroxide and with di-t-butyl peroxalate in the presence of the nitroxide scavenger l,l,3,3-tetramethyl-l,3-dihydroisoindol-2yloxyl are reported. Use of di-t-butyl peroxalate leads to the expected radical intermediates which are efficiently scavenged by the nitroxide. When benzoyl peroxide is used as initiator however, both ionic and radical processes are involved. The importance of electron-transfer processes is discussed.

📜 SIMILAR VOLUMES

On the electrochemical polymerization of

On the electrochemical polymerization of acrylonitrile and n-vinylpyrrolidone: new insight into the mechanism

✍ Prof. Robert Jérǒme; Marc Mertens; Dr. Lucien Martinot 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 319 KB 👁 2 views

Communications 2-Fluoro-5-[trans-4-(fmns-4"-pentylcyclohexyl)-cyclohexyl]pyrimidine CCM-5-F: 2-Dimethylamino-5-[tru~,~-4'-(trun.~-4"-pentylcyclohexyl)-cyclohexyllpyrimidine (30.2 g, 85 mmol) was dissolved in 300 ml toluene and at 0 "C methyltrifluoromethylsulfonate (16.4 g, 100 mmol) in 40 ml of tol

Rate enhancement of the N-oxyl-controlle

Rate enhancement of the N-oxyl-controlled free radical copolymerization of styrene with N-vinylcarbazole

✍ Baethge, Heike ;Butz, Sören ;Han, Chang-Hun ;Schmidt-Naake, Gudrun 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 70 KB 👁 2 views

The Nature of Crosslinking in N-Vinylfor

The Nature of Crosslinking in N-Vinylformamide Free-Radical Polymerization

✍ Leming Gu; Shiping Zhu; Andrew N. Hrymak; Robert H. Pelton 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 74 KB 👁 3 views

Two possible crosslinking mechanisms of PNVF gels. Scheme 1. Polymerization of NVF and hydrolysis of PNVF to PVAm.

The polymerization of N-vinylcarbazole i

The polymerization of N-vinylcarbazole in the presence of carbon black

✍ K. Ohkita; M. Uchiyama; H. Nishioka 📂 Article 📅 1978 🏛 Elsevier Science 🌐 English ⚖ 362 KB

In order to obtain more detailed information on the mechanism of the polymerization of N-vinylcarbazole (N-VC) in the presence of carbon black, a comparison of the rates of conversion under various conditions was made and the following results were obtained. The phenolic hydroxyl groups on the surfa

O-chloranil initiated polymerization of

O-chloranil initiated polymerization of pyrrole in presence of N-vinylcarbazole and some properties of the polymer

✍ Mukul Biswas; Anindita Roy 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 561 KB

The polymerization of a mixture of N-vinylcarbazole (NVC) and pyrrole (PY) by 0-chloranil in toluene yields an insoluble black polymer P(PY-NVC) which exhibits properties distinct from PPY or PNVC. The inclusion of either monomer moieties in P(PY-NVC) has been endorsed by IR spectroscopy. Kinetics o

Kinetics and reaction mechanism of templ

Kinetics and reaction mechanism of template polymerization investigated by conductimetric measurements. Part 3. Radical polymerization of acrylic acid in the presence of poly(N-vinylpyrrolidone)

✍ Rainaldi, Iacopo; Cristallini, Caterina; Ciardelli, Gianluca; Giusti, Paolo 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 164 KB 👁 2 views

Conductimetry was used for monitoring the radical polymerization of a weak electrolyte (acrylic acid) in aqueous solution and for determination of the kinetic parameters of the reaction (reaction order with respect to monomer, activation energy). The results obtained were consistent with those deter