Polymerization of <i>N</i>‐vinylcarbazole, 3. Studies of copolymerizations with methyl methacrylate and styrene

Bevington, J. C.; Dyball, Christopher J.; Leech, Joseph

doi:10.1002/macp.1979.021800309

Cited by 18 publications

(4 citation statements)

References 13 publications

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“…Synthesis of PA by classical radical polymerization has been widely studied [9][10][11]. Using the azoic initiator azoisobutyronitrile (AIBN) led to conventional radical polymerization while using benzoic peroxide (BPO) led to cationic and radical mechanisms [12].…”

Section: Introductionmentioning

confidence: 99%

Radical copolymerization of N-vinylcarbazole and p-bromostyrene: determination of monomer reactivity ratios by SEC-multidetection

Lateulade¹,

Grassl²,

Dagron‐Lartigau³

et al. 2006

Polymer

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Section: Introductionmentioning

confidence: 99%

Radical copolymerization of N-vinylcarbazole and p-bromostyrene: determination of monomer reactivity ratios by SEC-multidetection

Lateulade¹,

Grassl²,

Dagron‐Lartigau³

et al. 2006

Polymer

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“…Copolymerization with suitable monomers could soften the resulting product, leading to better film properties, and improve its mechanical properties. The copolymerization of N ‐vinylcarbazole with monomers such as alkyl acrylates and alkyl methacrylates has been studied by several investigators 3–6…”

Section: Introductionmentioning

confidence: 99%

“…The copolymerization of N-vinylcarbazole with monomers such as alkyl acrylates and alkyl methacrylates has been studied by several investigators. [3][4][5][6] The determination of the microstructure in copolymers is useful for establishing the structure-property relationship. 7 It is well known that NMR spectroscopy is probably the most effective method for characterizing the microstructures of polymers.…”

Section: Introductionmentioning

confidence: 99%

Nuclear magnetic resonance studies of N‐vinylcarbazole/methyl methacrylate copolymers

Brar

Kaur

2003

J of Applied Polymer Sci

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Copolymers of N-vinylcarbazole and methyl methacrylate of different compositions were prepared by solution polymerization with azobisisobutyronitrile as an initiator, and their compositions were determined from quantitative 13 C{ 1 H}-NMR spectroscopy. The reactivity ratios for the comonomers were calculated with the KelenTudos and nonlinear error-in-variable methods. The complete spectral assignment of the overlapping 1 H and 13 C{ 1 H} spectra of the copolymers was made with the help of distortionless enhancement by polarization transfer, two-dimensional heteronuclear single-quantum correlation, and total correlation spectroscopy.

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“…The copolymerization of N-vinylcarbazole with monomers like alkyl acrylates and alkyl methacrylates has been studied by several investigators. [4][5][6] The determination of microstructure in copolymers is of value in establishing structure-property relationship. 7 It is well known that NMR spectroscopy is probably the most effective method for characterizing the microstructure of polymers.…”

mentioning

confidence: 99%

Complete Spectral Assignment of Poly(N-Vinylcarbazole-co-Methyl Acrylate)s by NMR Spectroscopy

Brar

Kaur

2002

Polym J

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ABSTRACT:The copolymers of N-vinylcarbazole/methyl acrylate (V/M) of different compositions were prepared by solution polymerisation using 2,2'-Azobisisobutyronitrile (AIBN) as an initiator and their composition was determined from quantitative 13 C{ 1 H} NMR spectroscopy. Reactivity ratios for the comonomers were calculated using the Kelen-Tudos (KT) and non-linear error in variable methods (EVM). The complete spectral assignment of the overlapping 1 H and 13 C{ 1 H} spectra of the copolymers were done with the help of Distortionless Enhancement by Polarization Transfer (DEPT), two dimensional heteronuclear single quantum correlation (HSQC) and total correlated spectroscopy (TOCSY). The assignments of various compositional sequences were done in the carbon resonance signals of the methoxy region of M unit, the methine region of both V and M units and the methylene region of both V and M units.KEY WORDS Poly(N-vinylcarbazole-co-methyl acrylate)s / Two Dimensional Nuclear Magnetic Resonance (2D NMR) Spectroscopy / Microstructure / Poly(N-vinylcarbazole) (PVK) has been the subject of intensive investigation because it is one of the most sensitive photoconductive organic polymers. 1, 2 It has important applications in electrophotography, microlithography, electrochromic display devices, photoelectric devices, electroluminescent displays, and photothermoplastic imaging. 3 PVK is a stiff, brittle substance with poor mechanical and processing characteristics. Copolymerization with suitable monomers could soften the resulting product leading to better film properties and improve its mechanical properties. The copolymerization of N-vinylcarbazole with monomers like alkyl acrylates and alkyl methacrylates has been studied by several investigators. [4][5][6] The determination of microstructure in copolymers is of value in establishing structure-property relationship. 7 It is well known that NMR spectroscopy is probably the most effective method for characterizing the microstructure of polymers. [8][9][10] Crone and Natansohn 11 have reported the NMR analysis of microstructure of poly(methyl acrylate-co-N-vinylcarbazole). They have assigned the aliphatic and aromatic region in the proton spectra and aromatic region in the carbon spectra of the copolymers. However, some of the carbon and proton signals of the carbazole ring are erroneously assigned by them. They have reported the sequence distribution in the copolymers using C-1, 8a and H-1 resonance signals of the carbazole ring and the carbonyl carbon resonance signal of the M unit in the copolymer. However, they have not described the sequence distribution using the aliphatic region of the copolymer † To whom all correspondence should be addressed. spectra.Dais et al. 12 have reported the complete assignments of 1 H and 13 C spectra of PVK with the help of two-dimensional NMR techniques. In our earlier publication, 13 we reported the microstructure of Nvinylcarbazole/vinyl acetate copolymers using one and two-dimensional NMR spectroscopy. In continuation of our earlier w...

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Polymerization of N‐vinylcarbazole, 3. Studies of copolymerizations with methyl methacrylate and styrene

Cited by 18 publications

References 13 publications

Radical copolymerization of N-vinylcarbazole and p-bromostyrene: determination of monomer reactivity ratios by SEC-multidetection

Radical copolymerization of N-vinylcarbazole and p-bromostyrene: determination of monomer reactivity ratios by SEC-multidetection

Nuclear magnetic resonance studies of N‐vinylcarbazole/methyl methacrylate copolymers

Complete Spectral Assignment of Poly(N-Vinylcarbazole-co-Methyl Acrylate)s by NMR Spectroscopy

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