In situ generated, tetrahydrosalen stabilized yttrium borohydride complex: Efficient initiator for the ring-opening polymerization of ɛ-caprolactone

Autor:	Zhiquan Shen, Guang Ming Wu, Jian Fang Yu, Jing Huang, Wei Lin Sun
Rok vydání:	2009
Předmět:	In situ chemistry.chemical_compound Monomer chemistry Polymerization Polymer chemistry ɛ caprolactone chemistry.chemical_element General Chemistry Yttrium Borohydride Ring-opening polymerization Toluene
Zdroj:	Chinese Chemical Letters. 20:1357-1360
ISSN:	1001-8417
DOI:	10.1016/j.cclet.2009.06.018
Popis:	In this paper, we report the preparation of a new tertrahydrosalen-stabilized yttrium complex which was employed as an initiator-precursor for the polymerization of ɛ-caprolactone (ɛ-CL) in the presence of NaBH4 to give interesting hydroxytelechelic poly(ɛ-caprolactone) (PCL). The effect of [monomer]/[initiator] ([CL]/[I]), temperature and time on the polymerization was investigated. It was found that under the condition: [CL]/[I] = 1200, 55 °C, toluene: 0.5 mL, ɛ-CL: 0.5 mL, PCL with Mw = 32,600 and PDI = 1.47 was obtained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f7bc1c131a0d23e03251106d053e8da3 https://doi.org/10.1016/j.cclet.2009.06.018 Zobrazit plný text záznamu Full Text from ScienceDirect