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Poly(-caprolactone) diols (HOPCLOH) and their poly(ester-urethane)s (PEUs): The effect of linear aliphatic diols [HO-(CH2)m-OH] as initiators

AuthorsBáez, José E.; Marcos-Fernández, Ángel ; Martínez Richa, Antonio; Galindo-Iranzo, Plácido
KeywordsPoly(ε-caprolactone) diols
Ringopening polymerization
Plastic behavior
Alkyl group
Issue Date2017
PublisherTaylor & Francis
CitationPolymer-plastics technology and engineering 56: 889-898 (2017)
Abstractα,ω-Hydroxy telechelic poly(ε-caprolactones) were prepared by ring-opening polymerization of the ε-caprolactone catalyzed by ammonium decamolybdate in the presence of different aliphatic diols [HO–(CH2)m–OH, where m ¼ 2, 4, 6, 8, 10, 12, 14, and 16] as initiators to obtain a family of α,ω- hydroxy telechelic poly(ε-caprolactone) [HO–PCL–O–(CH2)m–O–PCL–OH, m ¼ 2, 4, 6, 8, 10, 12, 14, and 16]. The content of the alkyl group (AG) (–(CH2)m–) had an important effect on the crystallinity (xi) of α,ω-hydroxy telechelic poly(ε-caprolactone), showing a proportional relationship. In poly (ester-urethanes) derived from α,ω-hydroxy telechelic poly(ε-caprolactones) and 1,6- hexamethylene diisocyanate, the AG also showed a similar effect on the xi and eventually on the mechanical properties, increasing the values of the modulus. Therefore, AG content was a factor to induce a plastic behavior in poly(ester-urethanes). The effect of AG on the water uptake of poly(ester-urethanes) after 1 week was negligible.
Publisher version (URL)http://dx.doi.org/10.1080/03602559.2016.1247273
Identifiersdoi: 10.1080/03602559.2016.1247273
issn: 0360-2559
e-issn: 1525-6111
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