NDLI: Ring-banded spherulites of six-arm star-shaped poly(ε-caprolactone) with different arm length via CO2

Content Provider	Springer Nature Link
Author	Ji, Jing Liao, Xia Bai, Jianwei Luo, Xianglin Yang, Qi Li, Guangxian
Copyright Year	2015
Abstract	The lamellae structure and the ring-banded features of the concentric ring-banded spherulites grown from six-arm star-shaped poly(ε-caprolactone) (PCL) with different arm length under CO2 condition were investigated by polarized optical microscope, atomic force microscopy, and scanning electronic microscopy in this paper. Experimental results indicated that the concentric ring-banded spherulites with alternative periodically ridge and valley bands with continuous edge-on lamellae formed under the condition of CO2. The band space got narrower, and the number of the ring bands increased in PCL with the increasing pressure due to the plasticization effect of CO2. The band space of the six-arm star-shaped PCL with longer arm length was wider than that of the six-arm star-shaped PCL with shorter arm length whereas the number of ring bands was fewer. Because of the longer arm length which resulted in the higher entanglement, the chain mobility of the star-shaped PCL with longer arm length decreased markedly. The different entanglement resulting from the different arm length structure was considered to be the primary factors influencing the characteristic crystallization of the six-arm star-shaped PCL.
Starting Page	2311
Ending Page	2319
Page Count	9
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	293
Issue Number	8
e-ISSN	14351536
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-05-20
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ring-banded spherulites Poly(ε-caprolactone) Carbon dioxide Arm length Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Characterization and Evaluation of Materials Physical Chemistry Food Science Nanotechnology and Microengineering
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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