✦ LIBER ✦

Effects of Multi-Arm Structure on Crystallization and Biodegradation of Star-Shaped Poly(ε-caprolactone)

✍ Scribed by Wenyuan Xie; Ni Jiang; Zhihua Gan

Book ID: 102933762
Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 507 KB
Volume: 8
Category: Article
ISSN: 1616-5187
DOI: 10.1002/mabi.200800011

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✦ Synopsis

Abstract

Star‐shaped PCL with one to five arms were synthesized by ROP. They have the same crystal structure as linear PCL, indicating that the central cores are located in amorphous regions. The influence of arm length and number on crystallization and melting behavior were studied by DSC, POM, and through the Avrami equation. A model is proposed to analyze the enzymatic degradation process of star‐shaped polymers. The multi‐arm structure and the limitation of the central cores on the chain mobility of each arm are considered to be the primary factors influencing the characteristic crystallization and enzymatic degradation behavior of star‐shaped PCLs.

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