Beyond Lattice Matching: Steric Confinement Enables Enhanced Nucleation of Poly(L-lactide) on Nanotalc

Yang Li; Yinshu Zhang; Dai-Wu Deng; Zi-Xuan Zhang; Guangdong Chen; Zizhun Wang; Ning-Ning Zhang; Bao Li; Irshad Hussain; Youliang Zhu; Yang Yang; Kun Liu

doi:10.1007/s10118-026-3840-1

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Beyond Lattice Matching: Steric Confinement Enables Enhanced Nucleation of Poly(L-lactide) on Nanotalc

RESEARCH ARTICLE | Updated：2026-09-29

- Beyond Lattice Matching: Steric Confinement Enables Enhanced Nucleation of Poly(L-lactide) on Nanotalc
- Beyond Lattice Matching: Steric Confinement Enables Enhanced Nucleation of Poly(L-lactide) on Nanotalc
- Chinese Journal of Polymer Science 2026年44卷页码：1-11
- Affiliations：
  
  a.State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
  b.School of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
  c.Electron Microscopy Center, Jilin University, Changchun 130012, China
  d.Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS), Lahore 54792, Pakistan
- Author bio：
  
  youliangzhu@jlu.edu.cn (Y.Z.)
  yangchem@jlu.edu.cn (Y.Y.)
  kliu@jlu.edu.cn (K.L.)
- Funds：
  
  The authors acknowledge the support of the State Key Laboratory of Supramolecular Structures and Materials. This work was financially supported by the National Natural Science Foundation of China (Nos. 22472065, 22225203, 22122203 and 52073114), Fundamental Research Funds for the Central Universities, Open Projects of State Key Laboratory of Supramolecular Structure and Materials (Nos. sklssm2024038 and sklssm202607), and National Local Joint Laboratory for Advanced Textile Processing and Clean Production (No. 11-Z05026-1) for financial support.;The authors declare no interest conflict.Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-026-3840-1.Data supporting the findings of this study are available from the corresponding author upon reasonable request.
- DOI：10.1007/s10118-026-3840-1
  中图分类号：
- 收稿：2026-06-23，
  
  录用：2026-08-11，
  
  网络首发：2026-09-29，
  
  纸质出版：2026-09
- Accepted：
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Li, Y.; Zhang, Y.; Deng, D. W.; Zhang, Z. X.; Chen, G.; Wang, Z.; Zhang, N. N.; Li, B.; Hussain, I.; Zhu, Y.; Yang, Y.; Liu, K. Beyond lattice matching: steric confinement enables enhanced nucleation of poly(L-lactide) on nanotalc. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3840-1

Yang Li, Yinshu Zhang, Dai-Wu Deng, et al. Beyond Lattice Matching: Steric Confinement Enables Enhanced Nucleation of Poly(L-lactide) on Nanotalc[J/OL]. Chinese Journal of Polymer Science, 2026, 441-11.
Li, Y.; Zhang, Y.; Deng, D. W.; Zhang, Z. X.; Chen, G.; Wang, Z.; Zhang, N. N.; Li, B.; Hussain, I.; Zhu, Y.; Yang, Y.; Liu, K. Beyond lattice matching: steric confinement enables enhanced nucleation of poly(L-lactide) on nanotalc. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3840-1 DOI：

Yang Li, Yinshu Zhang, Dai-Wu Deng, et al. Beyond Lattice Matching: Steric Confinement Enables Enhanced Nucleation of Poly(L-lactide) on Nanotalc[J/OL]. Chinese Journal of Polymer Science, 2026, 441-11. DOI： 10.1007/s10118-026-3840-1.

摘要

Abstract

The incorporation of nucleating agents is widely regarded as an effective and practical strategy for overcoming the inherently slow cr

ystallization rate of poly(L-lactide) (PLLA). While talc has long been used to promote PLLA crystallization

primarily attributed to lattice matching between its (002) crystal facet and PLLA crystals

the underlying nucleation mechanism remains inadequately understood. In this work

we employed exfoliated nanotalc with a high proportion of exposed (002) nucleation-active facets to enhance the crystallinity and accelerate the crystallization rate of PLLA and reveal new molecular-level insights into its nucleating mechanism. Compared to conventional talc

nanotalc significantly accelerated PLLA crystallization

increasing its crystallinity from 40.0% to 49.5% and reducing the half-crystallization time from 2.21 min to 1.18 min. Correlative

in situ

high-resolution transmission electron microscopy (TEM) and atomic force microscopy (AFM) established a definitive interfacial orientation relationship

showing that PLLA preferentially aligns along the talc [310

]

direction. Combined with

in situ

characterization and molecular dynamics simulations

these results demonstrate that the nucleation of PLLA is driven not only by lattice matching but also by steric confinement of PLLA methyl groups within the six-membered rings of SiO

tetrahedra on the talc facet

which strengthens interfacial interactions and facilitates nucleation. This study provides a molecular-level understanding of heterogeneous polymer nucleation and offers guiding principles for the rational design of high-efficiency nucleating agents.

关键词

Keywords

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