Polyolefins Journal
With the collaboration of Iran Polymer Society

Expected nucleation effects of carboxylic acid salts on poly(1-butene)

Document Type : Original research

Authors

Tao Zheng 1
Qian Li 2
Qian Zhou 1
Huayi Li 2
Qian Xing 1
Liaoyun Zhang 1
Youliang Hu 2

1 College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

2 Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

https://doi.org/10.22063/poj.2016.1264
Abstract
9,10-Dihydro-9,10-ethano-anthracene-11,12-dicarboxylic acid disodium salt (DHEAS) was synthesized and used as a nucleating agent for poly(1-butene) (iPB). The isothermal crystallization kinetics of iPB having different nucleating agents were investigated by differential scanning calorimetry (DSC) and polarized optical microscopy (POM). The results showed that the nucleating agents increased the crystallization temperature and the crystallization rate and shortened the crystallization half-time (t1/2). As well, the nucleating agents could be used as heterogeneous nuclei in the iPB matrix and decreased the size of iPB. When the nucleating agent was DHEAS, the crystallization temperature of iPB was up to 93.6°C which was higher than that of other nucleating agents for iPB and pure iPB. The crystallization half-time in the presence of DHEAS was 0.58 min which was less than that of other nucleating agents for iPB and pure iPB. In this case, the spherulitic size of iPB was the smallest and the morphology was changed, which indicated that DHEAS displayed better nucleation effect among the studied nucleating agents.

Keywords

Nucleating agent
DHEAS
poly(1-butene), polarized optical microscope
crystallization half-time
Subjects
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  • Receive Date 03 June 2015
  • Revise Date 25 August 2015
  • Accept Date 30 August 2015
  • First Publish Date 01 January 2016

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