Nucleation Role of Basalt Fibers during Crystallization of Poly(ε-caprolactone) Composites
writer：Qiaolian Lv, Zeren Ying, Defeng Wu, Zhifeng Wang, Ming Zhang
keywords：poly(ε-caprolactone); basalt fibers; composites; nucleation; kinetics.
source：期刊
specific source：Industrial & Engineering Chemistry Research
Issue time：2017年
Industrial & Engineering Chemistry Research, 2017, 56(10), 2746-2753.
ABSTRACT:
Basalt fiber (BF) filled poly(ε-caprolactone) (PCL) composites were prepared by melt mixing for the crystallization study.
The results reveal that both pristine and treated BFs have remarkable nucleation effect on the crystallization of PCL,
but the latter has higher nucleation activity than the former. However, the PCL chain diffusion is
restrained by the barrier effect of BF and the increased viscosities, leading
to an increase of crystallization activation energy. But nucleation is dominant
because composites have far higher rates of crystallization than neat PCL. The presence of BF does not alter lamellar structure, but favors
the formation of the nuclei with denser fold surface. This leads to an increase
of the degree of crystallinity of PCL matrix, especially for the treated BF
filled composite. This work can provide useful information on the crystallization
control of PCL using BF and on the preparation of novel PCL/BF composites with
controllable properties.
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http://pubs.acs.org/doi/abs/10.1021/acs.iecr.6b04510