Cited by 50Polymer crystallization and propertiesBlock Copolymer Self-Assemblybiodegradable polymer synthesis and properties

Reexamining the Crystallization of Poly(ε-caprolactone) and Isotactic Polypropylene under Hard Confinement: Nucleation and Orientation

Shi, Guangyu, Liu, Guoming, Su, Cui, Chen, Haiming, Chen, Yu, Su, Yunlan, Müller, Alejandro J., Wang, Dujin·2017·Macromolecules

Abstract

The crystallization of poly(ε-caprolactone) (PCL) and isotactic polypropylene (iPP) infiltrated in nanoporous anodic alumina oxide (AAO) templates was reexamined to demonstrate the importance of obtaining polymer-free, clean AAO surfaces on the nucleation, size dependence of crystallization temperature ( T c ), and texture. The AAO pore diameters cover a broad range from 400 to 20 nm. When the AAO templates were completely free of any residual polymer on their surfaces, differential scanning calorimetry (DSC) experiments exhibited a single crystallization peak for all the samples with different AAO pore sizes. A drastic decrease in T c with density of domains indicated a transition from heterogeneous to homogeneous/surface nucleation. A regular decrease of T c with pore size was observed in the low T c regime, as a result of the volume dependence of nucleation events. The chain alignment of the two polymers infiltrated in AAO was studied by two-dimensional wide-angle X-ray scattering (WAXS). By comparing the experimental and simulated WAXS patterns, the orientation modes of the polymers were identified and compared with previous studies.

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Crossref · 10.1021/acs.macromol.7b02284

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  • With proper cleaning measures, all infiltrated PCL and iPP samples exhibited a single exothermic peak during cooling.

    “With proper cleaning measures, all the infiltrated PCL and iPP samples exhibited a single exothermic peak during cooling ( Fig. 24 ).”

    From Fractionated crystallization in semicrystalline polymers (2021) · cites this paper as [282]

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Authors
Shi, G., Liu, G., Su, C., Chen, H., Chen, Y., Su, Y., Müller, A. J., & Wang, D.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Ikerbasque (ES)
Corresponding author
Liu, Guoming
Venue
Macromolecules
Published
2017-11-15
Volume
50
Issue
22
Pages
9015-9023
ISSN
  • 0024-9297 (ISSN-L)
  • 1520-5835
OpenAlex
W2770446151
Cited by
50
References
54
Citations by year
2026: 5 · 2025: 4 · 2024: 3 · 2023: 4 · 2022: 6 · 2021: 7 · 2020: 6 · 2019: 6 · 2018: 9
FWCI
3.29
Type
journal article
Language
en
Open access
closed
Locations
Macromolecules (publishedVersion)
Funders
  • Ministerio de Econom?a y Competitividad (MAT2014-53437-C2-P)
  • Youth Innovation Promotion Association of the Chinese Academy of Sciences (2015026)
  • National Natural Science Foundation of China (21274156, 51203170)
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
Keywords
polycaprolactone, isotactic polypropylene, crystallization, surface nucleation, homogeneous nucleation, crystallization temperature, pore size dependence, chain orientation, polymer infiltration

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