𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Poly(ester–carbonates) containing poly(lactic–glycolic acid) and poly(ethylene glycol) segments

✍ Scribed by Maurizio Penco; Michele Becattini; Paolo Ferruti; Salvatore D'antone; Ramano Deghenghi

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
486 KB
Volume
7
Category
Article
ISSN
1042-7147

No coin nor oath required. For personal study only.

✦ Synopsis

The aim of the present paper is to report on the synthesis, characterization and structure-property relationships of a novel family of highly hydrophilic segmented copoly (esterether-carbonafes). The synthetic process is based on a chain-extension reaction involving low molecular weight poly(1actic-glycolic acid) copolymers, obtained by thermal polycondensation, and the a, wbis(ch1oroformates) of poly(ethy1ene glycol)s. The resulting products have been characterized in terms of molecular weight, thermal properties and water absorption. KEYWORDS: poo(lactic-fycolic acid); block copolymers; bi egradab e polymers; poly(estercarbonates); poly(ethy1ene g ycol)

📜 SIMILAR VOLUMES

Biodegradability of Poly(ethylene tereph
Biodegradability of Poly(ethylene terephthalate) Copolymers with Poly(ethylene glycol)s and Poly(tetramethylene glycol)
✍ Nagata, Minoru; Kiyotsukuri, Tsuyoshi; Minami, Susumu; Tsutsumi, Naoto; Sakai, W 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 400 KB 👁 2 views

Poly(ethy1ene terephthalate) copolymers were prepared by melt polycondensation of dimethyl terephthalate and excess ethylene glycol with 10- 40 mol% (in feed) of poly(ethy1ene glycol) (E) and poly(tetramethy1ene glycol) (B), with molecular weight (MW) of E and B 200-7500 and 1000, respectively. The

Drug release from poly(ortho esters)–pol
Drug release from poly(ortho esters)–poly(ethylene glycol) polyblend
✍ Min Wei; Jin Chang; Kang De Yao; Steven Ng; Jorge Heller 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 307 KB

A polyblend of poly(ortho esters)-poly(ethylene glycol) (POE-PEG) was prepared. The release behavior of the acetanilide-loaded film of the POE-PEG polyblend was studied. Blending POE with water-soluble PEG can promote the release of drug in pH 7.4 PBS buffer at 37°C, while POE has plasticizing effec

Miscibility of polystyrene with poly(eth
Miscibility of polystyrene with poly(ethylene oxide) and poly(ethylene glycol)
✍ Abdel-Azim A. Abdel-Azim; Aiman M. Atta; Medhat S. Farahat; Wagdy Y. Boutros 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 199 KB 👁 2 views

The intrinsic viscosity of polystyrene-poly(ethylene oxide) (PS-PEO) and PS-poly(ethylene glycol) (PEG) blends have been measured in benzene as a function of blend composition for various molecular weights of PEO and PEG at 303.15 K. The compatibility of polymer pairs in solution were determined on

End-group effect on chain conformation o
End-group effect on chain conformation of poly(propylene glycol) and poly(ethylene glycol)
✍ Sunghoe Yoon; William J. MacKnight; Shaw Ling Hsu 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 138 KB 👁 1 views

A comparison is made of the chain conformational distribution of hydroxyterminated poly(propylene glycol) (PPG) and poly(ethylene glycol) (PEG) with their methoxy-terminated derivatives. The significant end-group dependence on the glass transition temperature in PPG was observed by differential scan

Poly(ethylene glycol)-block-poly(butyl a
Poly(ethylene glycol)-block-poly(butyl acrylate). II. Characterization and properties
✍ Meidong Lang; Guo Zhang; Xinfang Chen; Na Feng; Shuhua Li 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 316 KB

Poly(ethylene glycol)-block-poly(butyl acrylate) synthesized by radical polymerization in a one-step procedure were characterized by gel permeation chromatography, infrared, 1 H-NMR spectroscopy, and differential scanning calorimetry (DSC). The crystalline property, emulsifying property, and phase t