Facile preparation of biodegradable chitosan derivative having poly(butylene glycol adipate) side chains

Abstract

Various modes are being explored for the construction of functional materials from nanoparticles. Despite these efforts, the assembly of nanoparticles remains challenging with respect to the requirement of multiple component organization on varying dimensions and length scales. The graft copolymers of chitosan with poly(butylene glycol adipate) (PBGA) were prepared due to the esterification reaction between PBGA and 6-O-succinate-N-phthaloyl-chitosan (PHCSSA) in the presence of toluene as a swelling agent. The graft copolymers are nanoparticles with the size of few hundred nanometers as observed from TEM. It is a potential method to combine chitosan with the hydrophobic synthetic polymers. The grafting reactions were conducted with various PBGA/PHCSSA feed ratios to obtain chitosan-g-PBGA copolymers with various PBGA contents. FT-IR, NMR, XRD, spectrofluorophotometer, and TEM were detected to characterize the copolymers.

Highly heat-resistant silicon-containing polyurethane-imide copolymers: Synthesis and thermal mechanical stability

“…In addition, the new characteristic absorption peaks at 1261 cm -1 and 801cm -1 appeared, which were ascribed to Si-C and Si-O, respectively [16][17][18][19][20]. As shown in Fig.…”

A new method of controlled grafting modification of chitosan via nitroxide-mediated polymerization using chitosan-TEMPO macroinitiator

“…Hudson et al [11] reported the heterogeneous graft copolymerization of chitosan powder with methyl acrylate using trichloroacetyl-manganese carbonyl co-initiation. Fang et al [12][13][14] prepared the graft copolymers, such as chitosan-g-polyethylene glycol, chitosan-g-poly(vinyl alcohol), and chitosan-g-poly(butylene glycol adipate) by the esterification reaction between 6-O-succinate-N-phthaloyl-chitosan and the synthetic polymers.…”

Synthesis and properties of temperature-responsive chitosan by controlled free radical polymerization with chitosan-RAFT agent

“…Jenkins and Hudson [21] reported the heterogeneous graft copolymerization of chitosan powder with methyl acrylate using trichloroacetyl-manganese carbonyl Co-initiation. Fang and co-workers [22][23][24] prepared the graft copolymers, such as chitosan-g-polyethylene glycol, chitosan-g-poly(vinyl alcohol), and chitosan-g-poly(butylene glycol adipate) by the esterification reaction between 6-O-succinate-N-phthaloyl-chitosan and the synthetic polymers.…”