star-shaped and linear poss-polylactide hybrid copolymers

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ID: 209741
2015
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Abstract
Novel octakis-2[(6-hydroxyhexyl)thio]ethyl-octasilsesquioxane (POSS-S-OH) as well as heptaisobutyl-2[(6-hydroxyhexyl)thio]ethyl-octasilsesquioxane (iBu-POSS-S-OH) were synthesized. POSS structures, bearing both types of groups i.e., 2[(6-hydroxyhexyl)thio]ethyl and the vinyl ones, pendant from the octahedral cage are also described. The synthetic pathway involved thiol-ene click reaction of 6-mercapto-1-hexanol (MCH) to octavinyloctasilsesquioxane (POSS-Vi), and heptaisobutylvinyloctasilsesquioxane (iBu-POSS-Vi), in the presence of 2,2′-azobisisobutyronitrile. The functionalized silsesquioxane cages of regular octahedral structure were used further as initiators for ring opening polymerization of L,L-dilactide, catalyzed by tin (II) 2-ethylhexanoate. The polymerization afforded biodegradable hybrid star shape and linear systems with an octasilsesquioxane cage as a core, bearing polylactide arm(s).
Reference Key
rozga-wijas2015materialsstar-shaped Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Krystyna Rozga-Wijas;Wlodzimierz A. Stanczyk;Jan Kurjata;Slawomir Kazmierski
Journal Nature Materials
Year 2015
DOI
10.3390/ma8074400
URL
http://www.mdpi.com/1996-1944/8/7/4400
Keywords
electronics civil engineering (general)microscopydescriptive and experimental mechanics nuclear engineeringengineering (general) polylactidetechnologyelectrical engineering

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