Download NMR Spectra of Polymers and Polymer Additives A J Brandolini by Anita J. Brandolini, Deborah D. Hills PDF
By Anita J. Brandolini, Deborah D. Hills
Presents unheard of quantitative and qualitative information regarding polymer recommendations for NMR and utilized spectroscopists, plastics engineers, analytical chemists, and polymer scientists.
Read Online or Download NMR Spectra of Polymers and Polymer Additives A J Brandolini D D Hills Marcel Dekker 0 PDF
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Extra resources for NMR Spectra of Polymers and Polymer Additives A J Brandolini D D Hills Marcel Dekker 0
Example text
4MHz) Temperature: 130°C Solvent: ODCB-d4/TCB (3/1 v/v) Concentration: 30% w/w Scans: 200 Spectral width: 25 kHz Data points: 8192 Pulse width: 90° Broadening: 2 Hz Pulse delay: 2 s Reference E. T. Hsieh and J. C. Randall. Macromolecules 15:353, 1982. html5/11/2006 8:07:21 AM Document Page 52 II-A-12— Polybutadiene, Hydrogenated Comments Hydrogenation of polybutadiene (PBd) {IV-B-1} yields a polymer that is structurally similar to poly (ethylene-co-1-butene); the ethyl branches arise from the pendant vinyl groups in the original material.
1— Ethylene Polymers and Copolymers Ethylene copolymers of relatively high ethylene content are most easily recognized by the dominant 13C resonance at 30 ppm, which arises from long (more than four) sequences of methylene carbons [6]. In purely linear (high-density) ethylene homopolymer {II-A-1}, for example, the only other observed 13C resonances are due to alkyl end groups [4]: B In most ethylene polymers and copolymers, chain branching occurs, which complicates the spectrum. In branched (low-density) ethylene homopolymer {II-A-3}, pendant alkyl groups vary in length.
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