Investigation of the intramolecular structure of styrene-ethylmethacrylate copolymers by 1H- and 13C-NMR: Reassignment of 1H-NMR spectra
The compositions and sequence distributions of homogeneous styrene (S)–ethyl methacrylate (E) copolymers, obtained by low conversion solution polymerization have been studied by 1H‐ and 13C‐NMR. A new set of peak triad assignments was proposed for the δ 2.1–4.2 ppm region in the 1H‐NMR spectrum, whe...
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| Veröffentlicht in: | Journal of polymer science. Part A, Polymer chemistry Polymer chemistry, 1988-05, Vol.26 (5), p.1439-1456 |
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| container_end_page | 1456 |
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| container_issue | 5 |
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| container_title | Journal of polymer science. Part A, Polymer chemistry |
| container_volume | 26 |
| creator | Tacx, J. C. J. F. Van Der Velden, G. P. M. German, A. L. |
| description | The compositions and sequence distributions of homogeneous styrene (S)–ethyl methacrylate (E) copolymers, obtained by low conversion solution polymerization have been studied by 1H‐ and 13C‐NMR. A new set of peak triad assignments was proposed for the δ 2.1–4.2 ppm region in the 1H‐NMR spectrum, whereby the reactivity ratios of rS = 0.59 and rE = 0.50 were used to establish this new assignment. The EEE and SSS blocks, present in these copolymers, have a high degree of syndiotacticity (σEE = 0.23, σSS = 0.39), whereas the ESE units are exhibiting a slight tendency toward isotacticity (σES = 0.66). |
| doi_str_mv | 10.1002/pola.1988.080260516 |
| format | Article |
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C. J. F. ; Van Der Velden, G. P. M. ; German, A. L.</creator><creatorcontrib>Tacx, J. C. J. F. ; Van Der Velden, G. P. M. ; German, A. L.</creatorcontrib><description>The compositions and sequence distributions of homogeneous styrene (S)–ethyl methacrylate (E) copolymers, obtained by low conversion solution polymerization have been studied by 1H‐ and 13C‐NMR. A new set of peak triad assignments was proposed for the δ 2.1–4.2 ppm region in the 1H‐NMR spectrum, whereby the reactivity ratios of rS = 0.59 and rE = 0.50 were used to establish this new assignment. 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The EEE and SSS blocks, present in these copolymers, have a high degree of syndiotacticity (σEE = 0.23, σSS = 0.39), whereas the ESE units are exhibiting a slight tendency toward isotacticity (σES = 0.66).</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Properties and characterization</subject><subject>Structure, morphology and analysis</subject><issn>0887-624X</issn><issn>1099-0518</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1988</creationdate><recordtype>article</recordtype><recordid>eNo9kM9uEzEQxi0EEqH0Cbj4wNWpvd5d2xyQSgRtpdBWVdVys8bOpDXsn8h2CvsGPDZeBeUyM57v02-sj5APgi8F59XZbuxgKYzWS6551fJGtK_IQnBjWJn1a7LgWivWVvWPt-RdSj85L1qjF-Tv1fCCKYcnyGEc6Lil-RlpGHKEfuzQ7zuINOW493kfcdZTniIOyDA_T11fKvg4dZCR-rH8Y-oxJuomKi4ZhWFDhVyx6-93n-gdQkrhaehxyDOoGMqeph36cu09ebOFLuHp_35C7r99vV9dsvXNxdXqfM1CJWXLpJSN1rVDZyoFoBpjAPXGQc3RgVHObUG26GqBKLQSvnaGOwObRmLlpTwhHw_YHSQP3TbC4EOyuxh6iJNVrRFcVcX2-WD7HTqcjrLgds7bznnbOW97zNve3qzPj68CYAdASBn_HAEQf9lWSdXYx-sL--XxoblVsrJc_gPQG4jh</recordid><startdate>198805</startdate><enddate>198805</enddate><creator>Tacx, J. 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| subjects | Applied sciences Exact sciences and technology Organic polymers Physicochemistry of polymers Properties and characterization Structure, morphology and analysis |
| title | Investigation of the intramolecular structure of styrene-ethylmethacrylate copolymers by 1H- and 13C-NMR: Reassignment of 1H-NMR spectra |
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