✦ LIBER ✦

Synthesis, properties, and permeation of solutes through hydrogels based on poly(ethylene glycol)-co-poly(lactones) diacrylate macromers and chitosan

✍ Scribed by Sung Min Cho; So Yeon Kim; Young Moo Lee; Young Kiel Sung; Chong Su Cho

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 161 KB
Volume: 73
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19990912)73:11<2151::aid-app11>3.0.co;2-0

No coin nor oath required. For personal study only.

✦ Synopsis

Triblock copolymers from poly(ethylene glycol) (PEG) and D,L-lactide or -caprolactone were synthesized to prepare semi-interpenetrating polymer networks (semi-IPNs) with chitosan by ultraviolet (UV) irradiation method. Then, the solute permeation through these semi-IPNs hydrogels were investigated. The structures of semi-IPNs were confirmed by Fourier transform infrared (FTIR) spectroscopy and wide-angle X-ray diffractometer (WAXD). The equilibrium water content (EWC) of these hydrogels was in the range of 67-75%. The crystallinity, thermal properties, and mechanical properties of semi-IPNs hydrogels were studied. All the hydrogels revealed a remarkable decrease in crystallinity as compared with the PEG macromer itself. The tensile strengths of semi-IPNs hydrogels in a dry state were rather high, but those of hydrogels in a wet state decreased drastically. The permeabilities of solutes of hydrogels followed the swelling behaviors and were regulated by solute size.

📜 SIMILAR VOLUMES

Gamma radiation synthesis and swelling p

Gamma radiation synthesis and swelling properties of hydrogels based on poly(ethylene glycol)/methacrylic acid (MAc) mixtures

✍ Horia M. Nizam El-Din; Abdel Wahab M. El-Naggar 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 143 KB

## Abstract In this work, gamma radiation was used to prepare hydrophilic hydrogels based on different mass ratios of poly(ethylene glycol) (PEG) and methacrylic acid (MAc) monomer. The thermal stability of hydrogels was characterized thermogravimetric analysis (TGA). The effect of temperature and

Effect of hydrotalcite on the physical p

Effect of hydrotalcite on the physical properties and drug-release behavior of nanocomposite hydrogels based on poly[acrylic acid-co-poly(ethylene glycol) methyl ether acrylate] gels

✍ Wen-Fu Lee; Yung-Chu Chen 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 138 KB 👁 2 views

## Abstract A series of nanocomposite hydrogels used for bioadhesive were prepared from acrylic acid, poly(ethylene glycol) methyl ether acrylate, and intercalated hydrotalcite (HT) by photopolymerization. The microstructures of the intercalated HT and sample gels were identified by X‐ray diffracti