Direct Comparison of Crystal Nucleation Activity of PCL on Patterned Substrates

Jian Hu; Rui Xin; Chun-Yue Hou; Shou-Ke Yan; Ji-Chun Liu

doi:10.1007/s10118-019-2226-z

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Direct Comparison of Crystal Nucleation Activity of PCL on Patterned Substrates

ARTICLE | Updated：2021-02-18

- Direct Comparison of Crystal Nucleation Activity of PCL on Patterned Substrates
- Chinese Journal of Polymer Science Vol. 37, Issue 7, Pages: 693-699(2019)
- Affiliations：
  
  a.Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao 266042, China
  b.College of Chemical Engineering and Pharmaceutics, Key Laboratory of Polymer Science and Nanotechonology, Henan University of Science and Technology, Luoyang 471003, China
- Author bio：
  
  skyan@qust.edu.cn
- Funds：
- DOI：10.1007/s10118-019-2226-z
  CLC：
- Received：24 December 2018，
  
  Revised：2019-1-9，
  
  Accepted：17 January 2019，
  
  Online First：27 February 2019，
  
  Published：2019-07
- Accepted：
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Citation: Hu, J.; Xin, R.; Hou, C. Y.; Yan, S. K.; Liu, J. C. Direct comparison of crystal nucleation activity of PCL on patterned substrates. Chinese J. Polym. Sci. 2019, 37, 693–699

Jian Hu, Rui Xin, Chun-Yue Hou, et al. Direct Comparison of Crystal Nucleation Activity of PCL on Patterned Substrates[J]. Chinese Journal of Polymer Science, 2019, 37(7): 693-699.
Citation: Hu, J.; Xin, R.; Hou, C. Y.; Yan, S. K.; Liu, J. C. Direct comparison of crystal nucleation activity of PCL on patterned substrates. Chinese J. Polym. Sci. 2019, 37, 693–699 DOI： 10.1007/s10118-019-2226-z.

Jian Hu, Rui Xin, Chun-Yue Hou, et al. Direct Comparison of Crystal Nucleation Activity of PCL on Patterned Substrates[J]. Chinese Journal of Polymer Science, 2019, 37(7): 693-699. DOI： 10.1007/s10118-019-2226-z.

摘要

Abstract

A sample containing different regions with poly(

-caprolactone) (PCL)

oriented polyethylene (PE)

and oriented isotactic polypropylene (

PP) films in contact with glass slide has been prepared to be observed in the same view field in an optical microscope and the crystallization of PCL in different regions during cooling from 80 °C down to room temperature at a rate of 1 °C·min

−1

was studied. The results showed that the crystallization of PCL started first at the PE surface and then at the

PP surface

while its bulk crystallization occured much later. This indicates that though both PE and

PP are active in nucleating PCL

the nucleation ability of PE is stronger than that of

PP. This was due to a better lattice matching between PCL and PE than that between PCL and

PP. Moreover

since lattice matching existed between every (

0) lattice planes of both PCL and PE but only between the (100)

PCL

and (010)

lattice planes

the uniaxial orientation feature of the used PE and

PP films resulted in the existence of much more active nucleation sites of PCL on PE than on

PP. This led to the fact that the nucleation density of PCL at PE surface was so high that the crystallization of PCL at PE surface took place in a way like the film developing process with PCL microcrystallites happened everywhere with crystallization proceeding simultaneously. On the other hand

even though

PP also enhanced the nucleation density of PCL evidently

the crystallization of PCL at

PP surface included still a nucleation and crystal growth processes similar to that of its bulk crystallization.

关键词

Keywords

references

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