𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Crystallization and Ring-Banded Spherulite Morphology of Poly(ethylene oxide)-block-Poly(ε-caprolactone) Diblock Copolymer

✍ Scribed by Shichun Jiang; Chaoliang He; Lijia An; Xuesi Chen; Bingzheng Jiang

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
268 KB
Volume
205
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Summary: The crystallization behavior of crystalline‐crystalline diblock copolymer containing poly(ethylene oxide) (PEO) and poly(ε‐caprolactone) (PCL), in which the weight fraction of PCL is 0.815, has been studied via differential scanning calorimeter (DSC), wide‐angle X‐ray diffraction (WAXD), and polarized optical microscopy (POM). DSC and WAXD indicated that both PEO and PCL blocks crystallize in the block copolymer. POM revealed a ring‐banded spherulite morphology for the PEO‐b‐PCL diblock copolymer.

DSC heating curve for the PEO‐b‐PCL block copolymer.

magnified imageDSC heating curve for the PEO‐b‐PCL block copolymer.

📜 SIMILAR VOLUMES

Poly(ϵ-caprolactone)/poly(ethylene oxide
Poly(ϵ-caprolactone)/poly(ethylene oxide) diblock copolymer II. Nonisothermal crystallization and melting behavior
✍ Zhihua Gan; Jie Zhang; Bingzheng Jiang 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 261 KB 👁 1 views

The nonisothermal crystallization behavior and melting process of the poly(1-caprolactone) (PCL)/poly(ethylene oxide) (PEO) diblock copolymer in which the weight fraction of the PCL block is 0.80 has been studied by using differential scanning calorimetry (DSC). Only the PCL block is crystallizable,

Synthesis and Characterization of Star-S
Synthesis and Characterization of Star-Shaped Diblock Poly(ε-caprolactone)/Poly(ethylene oxide) Copolymers
✍ Giovanni Maglio; Giuseppe Nese; Margherita Nuzzo; Rosario Palumbo 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 129 KB

## Abstract **Summary:** Star‐shaped hydroxy‐terminated poly(__ε__‐caprolactone)s (__ss__PCL), with arms of different lengths, were obtained by ring‐opening polymerization (ROP) of __ε__‐caprolactone initiated by pentaerythritol, and were condensed with __α__‐methyl‐__ω__‐(3‐carboxypropionyloxy)‐po

Synthesis and characterization of poly(ϵ
Synthesis and characterization of poly(ϵ-caprolactone)-poly(ethylene glycol) block copolymer
✍ Zhixue Zhu; Chengdong Xiong; Lianlai Zhang; Xianmo Deng 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 155 KB 👁 1 views

Poly( 1-caprolactone) -poly(ethylene glycol) -poly( 1-caprolactone) triblock copolymers (PECL) covering a wide range of poly(ethylene glycol) (PEG) lengths were synthesized with alkali metal alkoxide derivatives of poly(ethylene glycol). The effects of various factors, such as amount of the initiato

Preparation, characterization, and drug
Preparation, characterization, and drug release behaviors of drug nimodipine-loaded poly(ε-caprolactone)-poly(ethylene oxide)-poly(ε-caprolactone) amphiphilic triblock copolymer micelles
✍ Haixiong Ge; Yong Hu; Xiqun Jiang; Daming Cheng; Yuyan Yuan; Hong Bi; Changzheng 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 230 KB

Amphiphilic triblock copolymers, poly(epsilon-caprolactone)-poly(ethylene oxide)-poly(epsilon-caprolactone) (PCL-PEO-PCL), were synthesized by ring opening polymerization of epsilon-caprolactone initiated with the hydroxyl functional groups of poly(ethylene glycol) at both ends of the chain. The mic

Block copolymers of poly(L-lactide) and
Block copolymers of poly(L-lactide) and poly(ε-caprolactone) or poly(ethylene glycol) prepared by reactive extrusion
✍ W. M. Stevels; A. Bernard; P. Van De Witte; P. J. Dijkstra; J. Feijen 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 499 KB 👁 1 views

## SYNOPSIS Blends of poly(L-lactide) (PLLA) and poly(e-caprolactone) (PCL) were prepared in a corotating twin screw miniextruder (40 rpm, 200"). It was attempted to prepare multiblock copolymers by allowing a controlled number of transesterification reactions. Various catalysts (n-Bu,SnOMe, Sn(Oc