Author/Authors :
Zheng، Tao نويسنده College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China , , Li، Qian نويسنده Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China , , Zhou، Qian نويسنده College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China , , Li، Huayi نويسنده Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China , , Xing، Qian نويسنده College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China , , Zhang، Liaoyun نويسنده College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China , , Hu، Youliang نويسنده ,
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.
