Synthesis of a Novel Chitin Derivative Having Oligo(ɛ-caprolactone) Side Chains in Aqueous Reaction Media

Synthesis of a Poly(vinyl alcohol)-Based Graft Copolymer Having Poly(e-caprolactone) Side Chains by Solution Polymerization

“…[30] We have also already succeeded in synthesizing chitin-graft-poly(e-caprolactone) by the polymerization of CL in the presence of water with tin(II) 2-ethylhexanoate. [31] In the present work, the ring-opening oligomerization of CL with PVA was examined in an aqueous solution at 100-120 8C. However, no graft copolymer PVA-g-PCL was obtained in the experiment.…”

Nanocomposites of poly( l -lactide) and surface-modified chitin whiskers with improved mechanical properties and cytocompatibility

“…This result is consist with that reported in the literature[33]. In addition, when the feed molar ratio changed from 1:2.5 to 1:10, the DP values and corresponding mass content of the oligo(L-lactide) side chains showed a tendency to increase from 1.54 to 2.08 and 35.33% to 42.45%, respectively.…”

Development of an Amphiphilic Chitin Derivative with Lipid/Peptide-Type Side Chains Having Skin Protective Ability

“…We have previously reported a graft copolymerbased WSC that not only demonstrated high solubility in polar solvents but miscibility with common polymers, such as chitin-graftpoly(2-alkyl-2-oxazoline) and chitin-graft-polysarcosine. [22][23][24][25][26][27][28][29][30] Since chitin is assumed to have polypeptide side chains linked directly to some of the C-2 amino groups under intact conditions, we have designed chitin derivatives carrying various peptides at the C-2 position with the aim to endow chitin with valuable functions. 31 In this study, we prepared N-(N'-acetylglycyl) chitin (AGC) and N-(N'-dodecanoylglycyl)chitin (DGC) with amphiphilic lipoamino acid side groups to achieve higher affinity with the hydrophobic stratum corneum (SC).…”