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Uniform grafting of poly(1,5-dioxepan-2-one) by surface-initiated, ring-opening polymerization

✍ Scribed by Kuk Ro Yoon; Ok Ja Yoon; Young Shik Chi; Insung S. Choi


Publisher
The Polymer Society of Korea
Year
2006
Tongue
English
Weight
224 KB
Volume
14
Category
Article
ISSN
1598-5032

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Silica/Poly(1,5-dioxepan-2-one) Hybrid N
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## Abstract **Summary:** Biodegradable poly(1,5‐dioxepan‐2‐one) (PDXO) was grown __directly__ from SiOH groups of a silica nanoparticle by surface‐initiated, ring‐opening polymerization (SI‐ROP) of 1,5‐dioxepan‐2‐one (DXO). The direct SI‐ROP of DXO was achieved by heating a mixture of Sn(Oct)~2~,

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Ring-opening polymerization of 1,5-dioxepan-2-one initiated by 1,1,6,6tetra-n-butyl-1,6-distanna-2,5,7,10-tetraoxacyclodecane was carried out in chloroform, dichloromethane, or 1,2-dichloroethane. Effects of reaction temperature, solvent, and monomer-to-initiator ratio were investigated. Polymerizat

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## Abstract Biocompatible hyperbranched polyglycerol (HPG) has been covalently grafted from the surfaces of multiwalled carbon nanotubes (MWNTs) by the “grafting from” method based on in situ anionic ring‐opening polymerization. The macroinitiator of hydroxyl‐functionalized MWNTs (MWNT‐OH) with hyd