Correlation between Polymerization of Cyclic Butylene Terephthalate (CBT) and Crystallization of Polymerized CBT

Jian-qiang Zhang; Zhi-fang Li; Zheng Zhang; Hui-xia Feng; Zong-bao Wang; Ya Li; Peng Chen; Qun Gu

doi:10.1007/s10118-015-1662-7

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Correlation between Polymerization of Cyclic Butylene Terephthalate (CBT) and Crystallization of Polymerized CBT

PAPER | Updated：2021-06-21

- Correlation between Polymerization of Cyclic Butylene Terephthalate (CBT) and Crystallization of Polymerized CBT
- Chinese Journal of Polymer Science Vol. 33, Issue 8, Pages: 1104-1113(2015)
- Affiliations：
  
  a.School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
  b.Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
  c.Institute of Material Engineering, Ningbo University of Technology, Ningbo 315016, China
  d.Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Author bio：
  
  **Jian-qiang Zhang (张建强), E-mail: zhangjq@lut.cn
  Qun Gu (顾群), E-mail: guqun@nimte.ac.cn
- Funds：
- DOI：10.1007/s10118-015-1662-7
  CLC：
- Received：22 November 2014，
  
  Revised：2015-01-30，
  
  Accepted：07 February 2015，
  
  Published：2015-08
- Accepted：
Scan QR Code
Jian-qiang Zhang, Zhi-fang Li, Zheng Zhang, et al. Correlation between Polymerization of Cyclic Butylene Terephthalate (CBT) and Crystallization of Polymerized CBT[J]. Chinese Journal of Polymer Science, 2015, 33(8): 1104-1113.
DOI：

Jian-qiang Zhang, Zhi-fang Li, Zheng Zhang, et al. Correlation between Polymerization of Cyclic Butylene Terephthalate (CBT) and Crystallization of Polymerized CBT[J]. Chinese Journal of Polymer Science, 2015, 33(8): 1104-1113. DOI： 10.1007/s10118-015-1662-7.

摘要

Abstract

The correlation between ring-opening polymerization (ROP) of cyclic butylene terephthalate (CBT) and crystallization of polymerized CBT (pCBT) strongly affected the final properties of pCBT and its composites. The major objective of this contribution is to pinpoint the threshold temperature between them and the interrelation is successfully disclosed. That is

crystallization during polymerization occurs below 204 °C and the crystallization properties of pCBT are determined by this isothermal ROP stage; polymerization and crystallization are gradually separated with the increase of temperature of ROP (

) from 204 °C

and the crystallization properties of pCBT are dominated by cooling stage; only polymerization is performed above 212 °C. Moreover

quantitative analysis suggests that uniform crystal size distributions and thicker lamellar crystals derive from the stage of crystallization during polymerization. On the contrary

the crystal size distributions become wider above 204 °C of

and lead to obvious double melting peaks during heating scan. These efforts provide a very useful guide for the related investigation and application of CBT.

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