Synthesis and characterization of amphiphilic hydroxypropylcellulose-graft-poly(ε-caprolactone)

✍ Scribed by Ruiwen Shi; Helen M. Burt

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 160 KB
• Volume: 89
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.12194

✦ Synopsis

Abstract

An amphiphilic graft copolymer, hydroxypropylcellulose‐graft‐poly(ε‐caprolactone) (HPC‐g‐PCL), was synthesized by bulk polymerization without a catalyst and characterized with one‐dimensional and two‐dimensional NMR spectroscopy. Molar substitution of ε‐caprolactone on HPC (MS~CL~) was estimated by both gravimetry and ^1^H‐NMR, and the gravimetric method was considered suitable for MS~CL~ determination. Heterogeneity in the HPC‐g‐PCL film was suggested by a microscopic study, and the existence of PCL‐rich crystalline regions was confirmed by the results of X‐ray diffraction and differential scanning calorimetry (DSC). The double endotherm observed in the DSC scans of HPC‐g‐PCL was associated with the different molecular weight fractions in the copolymer. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 718–727, 2003