1975
DOI: 10.1002/macp.1975.021760606
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Über makrozwitterionen, 10. Versuche zur darstellung von makrozwitterionen aus α,ω‐bifunktionellem poly(α‐methylstyrol)

Abstract: Eingangsdatum: 29. Oktober 1974) ZUSAMMENFASSUNG:Verschiedene Moglichkeiten zur Darstellung von Makrozwitterionen ohne polare Gruppen in der Polymerkette werden diskutiert.Unter Verwendung von 3-DimethylaminopropylIithium als Initiator und Propansulton (2) als Kettenabbruchreagenz wurden a,w-bifunktionelle Poly(a-methy1styrol)e 4 mit einer tert. Amino-und einer Lithiumsulfonat-Endgruppe (Molekulargewichtsbereich % lo3; Bifunktionalitat > 90';/,) dargestellt. Die beiden Endgruppen wurden wie bei den entsprec… Show more

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Cited by 29 publications
(17 citation statements)
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References 29 publications
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“…3(a) corresponding to sample MF2 in Table II] exhibit a characteristic relatively broad resonance at ␦ ϭ 2.70 ppm corresponding to the methylene protons on the carbon ␣ to the sulfonate group. The shape and position of the peak are very close to those reported by Eisenbach et al 15 for sulfoalkylated poly(␣-methylstyryl-)lithium but differ from the relatively sharp signal at ␦ ϭ 2.3 ppm observed by Quirk and Kim 17 for -lithium sulfonated polystyrene. The difference in chemical shift and peak appearance could Table II).…”
Section: Methodssupporting
confidence: 73%
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“…3(a) corresponding to sample MF2 in Table II] exhibit a characteristic relatively broad resonance at ␦ ϭ 2.70 ppm corresponding to the methylene protons on the carbon ␣ to the sulfonate group. The shape and position of the peak are very close to those reported by Eisenbach et al 15 for sulfoalkylated poly(␣-methylstyryl-)lithium but differ from the relatively sharp signal at ␦ ϭ 2.3 ppm observed by Quirk and Kim 17 for -lithium sulfonated polystyrene. The difference in chemical shift and peak appearance could Table II).…”
Section: Methodssupporting
confidence: 73%
“…Sulfonic acid salts are expected 15,17 to display a strong infrared absorption band in the 1150 -1250 cm Ϫ1 region and a medium-intensity absorption around 1040 -1060 cm Ϫ1 . Similar observations are made for the telechelics synthesized, the intensity of the characteristic absorption bands decreasing as the molecular weight of the chains increases.…”
Section: Methodsmentioning
confidence: 99%
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“…[8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] This limitation can be in part avoided by the use of functionally substituted DPE derivatives coupled with organolithium compounds. It is also advantageous that many substituted DPE derivatives with several anion-stable functional groups have been synthesized especially in recent years.…”
Section: Resultsmentioning
confidence: 99%
“…For example, Eisenbach and his coworkers synthesized 3-(N,N-dimethylamino)propyllithium (25) and used it in the polymerization of styrene to afford the tertiary amine-end-functionalized polystyrene [42]. The resulting polystyrene was readily transformed into an interesting well-defined terminal ionomer by treating with alkyl halides or acids.…”
Section: Synthesis Of End-functionalized Polymers With Use Of Functiomentioning
confidence: 98%