Spectral assignment of poly(vinyl acetate) by one and two dimensional NMR spectroscopy: Revisited

Dutta, Kaushik; Mukherjee, Munia; Brar, A. S.

doi:10.1002/(sici)1099-0518(19990301)37:5<551::aid-pola5>3.0.co;2-r

Cited by 27 publications

(18 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These polymers have unusually complex structure and can only be assigned with the help of 2D NMR experiments. Brar et al have reported the configurational assignments of poly(vinyl acetate) [40], poly(vinyl alcohol) [41], and poly(n-butyl acrylate) [42] using 2D HSQC, TOCSY, and HMBC experiments. 2D NMR has emerged as the most effective technique to study the polymer structure.…”

Section: D Nmr Techniquesmentioning

confidence: 99%

Two-dimensional NMR studies of acrylate copolymers

Brar

Goyal

Hooda

2009

Pure and Applied Chemistry

Self Cite

View full text Add to dashboard Cite

High-resolution NMR spectroscopy is the most versatile, reliable, and generally acceptable technique for the determination of the microstructure of polymers. 2D NMR techniques, along with 1D NMR, have more potential to study absolute configurational assignments and sequence distribution of copolymers. Physical and chemical properties of polymers are influenced fundamentally by their microstructure. We discuss the detailed microstructure analysis of a large number of homopolymers, copolymers, and terpolymers. 2D NMR study of poly(methyl methacrylate) (PMMA), poly(methyl acrylate) (PMA), and poly(methacrylonitrile) (PMAN) is discussed in this article. In addition to homopolymers, 2D heteronuclear single-quantum coherence (HSQC), total correlation spectroscopy (TOCSY), and heteronuclear multiple-bond correlation (HMBC) study of different copolymers such as poly(methyl methacrylate-co-methyl acrylate), poly(styrene-co-methyl methacrylate), and poly(methyl methacrylate-co-methacrylonitrile) have also been reported here. This in turn helps in microstructural analysis of terpolymers such as poly(methacrylonitrile-co-styrene-co-methyl methacrylate), poly(acrylonitrile-co-methyl methacrylate-comethyl acrylate), and poly(ethylene-co-vinyl acetate-co-carbon monoxide).

show abstract

Section: D Nmr Techniquesmentioning

confidence: 99%

Two-dimensional NMR studies of acrylate copolymers

Brar

Goyal

Hooda

2009

Pure and Applied Chemistry

Self Cite

View full text Add to dashboard Cite

show abstract

“…1a. Various resonance signals were assigned by comparing 13 C{ 1 H} NMR spectra of terpolymers with N-vinyl carbazole/methyl acrylate [21], N-vinyl carbazole/vinyl acetate [22] and vinyl acetate/methyl acrylate [29] copolymers and their respective homopolymers [17,18,30,31]. Complex and overlapped methoxy, methine, methylene and carbonyl carbons were further resolved with the help of DEPT-135 NMR spectrum (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The study of sequence distribution and stereoregularity of monomer units in polymer chains provide important information regarding the physical properties, tacticity and polymerization mechanism of the polymers [8][9][10][11][12]. High resolution NMR spectroscopy is most powerful and essential technique to determine intramolecular and intermolecular chain structure of the polymers [13][14][15][16][17]. This is due to the fact that 13 C{ 1 H} NMR chemical shifts are extremely sensitive to monomer and stereosequence effects.…”

Section: Introductionmentioning

confidence: 99%

One- and two-dimensional NMR studies of methyl acrylate/vinyl acetate/N-vinyl carbazole terpolymers

Hooda

Goyal

Brar

2010

Journal of Molecular Structure

View full text Add to dashboard Cite

“…Microstructure determination of poly(N-acryloylcarbazole), 25 poly(vinylacetate), 26,27 and N-acryloylcarbazole/methyl methacrylate 28 (A/M) copolymers by NMR has already been reported. Brar et al [29][30][31][32] have reported comonomer sequence and cotacticity of vinylacetate copolymers.…”

Section: Introductionmentioning

confidence: 99%

Microstructure determination and thermal studies ofn‐acryloylcarbazole/vinyl acetate copolymers

Brar

Singh

2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

Copolymers of N-acryloylcarbazole (A) and vinyl acetate (V) were synthesized by bulk polymerization using benzoyl peroxide (BPO) as free-radical initiator at 658C in different in-feed ratios. The composition of the copolymer was determined by H} NMR spectra of the copolymers were done by the help of distortionless enhancement by polarization transfer (DEPT) and two-dimensional NMR techniques such as heteronuclear single quantum coherence (HSQC) and total correlation spectroscopy (TOCSY). The methine and methylene carbon resonances were found to be compositional as well as configurational sensitive. The signals obtained were broad pertaining to the restricted rotation of bulky carbazole group. The thermal stability and glass-transition temperatures (T g ) of the copolymers were found to be dependant on polymer composition and characteristic of rotational rigidity of the polymer chain. Variation in the values of T g with the copolymer composition was found to be in good agreement with theoretical values obtained from Johnston and Barton equations.

show abstract

Spectral assignment of poly(vinyl acetate) by one and two dimensional NMR spectroscopy: Revisited

Cited by 27 publications

References 14 publications

Two-dimensional NMR studies of acrylate copolymers

Two-dimensional NMR studies of acrylate copolymers

One- and two-dimensional NMR studies of methyl acrylate/vinyl acetate/N-vinyl carbazole terpolymers

Microstructure determination and thermal studies ofn‐acryloylcarbazole/vinyl acetate copolymers

Contact Info

Product

Resources

About