Preparation of poly(ε-caprolactone) and its nanocomposites in ε-caprolactam
Keyword(s):
Abstract The solution polymerization of ε-caprolactone (CLO) initiated with stannous 2-ethylhexanoate has been studied in the temperature range 90 - 150 °C. ε-Caprolactam (CLA) was used as a solvent. Although relatively high polymerization temperature was used poly(ε-caprolactone) (PCLO) was formed solely and no CLA structural units were incorporated into its chains. The polymerization rate increased with CLO content in feed and polymerization temperature. A linear dependence of molar mass on yield of PCLO indicates living character of polymerization. When polymerization was carried out in the presence of organically modified MMT, nanocomposites PCLO - layered silicate with an exfoliated structure were obtained
2008 ◽
Vol 21
(2)
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pp. 188-193
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2008 ◽
Vol 23
(9)
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pp. 2296-2304
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Keyword(s):
2009 ◽
Vol 151
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pp. 129-134
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