Interface Regulation and Preparation of Gelatin/Poly(ethylene oxide)/Cinnamaldehyde Core-Shell Fibers

MA Zhi-yu; FANG Lei; BAO Wei; FANG Kuan-jun

doi:10.14028/j.cnki.1003-3726.2025.25.160

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Interface Regulation and Preparation of Gelatin/Poly(ethylene oxide)/Cinnamaldehyde Core-Shell Fibers

更新时间：2025-10-30

- Interface Regulation and Preparation of Gelatin/Poly(ethylene oxide)/Cinnamaldehyde Core-Shell Fibers
- Polymer Bulletin Vol. 38, Issue 11, Pages: 1626-1638(2025)
- 作者机构：
  
  青岛大学纺织服装学院，山东省医疗健康纺织材料重点实验室，生态纺织省部共建协同创新中心，山东省高等学校低碳纺织与功能制造实验室，青岛 266071
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.25.160
  CLC：
- Received：30 May 2025，
  
  Accepted：02 August 2025，
  
  Published Online：15 September 2025，
  
  Published：20 November 2025
- 稿件说明：
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马智瑜, 房磊, 包伟, 房宽峻. 明胶/聚氧化乙烯/肉桂醛芯壳纤维界面调控与制备. 高分子通报, 2025, 38(11), 1626-1638.

Ma, Z. Y.; Fang, L.; Bao, W.; Fang, K. J. Interface regulation and preparation of gelatin/polyethylene oxide/cinnamaldehyde core-Shell Fibers. Polym. Bull. (in Chinese), 2025, 38(11), 1626-1638.
马智瑜, 房磊, 包伟, 房宽峻. 明胶/聚氧化乙烯/肉桂醛芯壳纤维界面调控与制备. 高分子通报, 2025, 38(11), 1626-1638. DOI： 10.14028/j.cnki.1003-3726.2025.25.160.

Ma, Z. Y.; Fang, L.; Bao, W.; Fang, K. J. Interface regulation and preparation of gelatin/polyethylene oxide/cinnamaldehyde core-Shell Fibers. Polym. Bull. (in Chinese), 2025, 38(11), 1626-1638. DOI： 10.14028/j.cnki.1003-3726.2025.25.160.

摘要

芯壳纤维作为具有包埋与封装功能的微纳米材料，在药物控释、组织工程和智能纺织品等领域具有重要应用价值。本研究采用微流控旋转纺丝技术，以明胶(gelatin

GEL)/聚氧化乙烯(polyethylene oxide

PEO)为壳层、肉桂醛(cinnamaldehyde

CA)/PEO为芯层制备芯壳纤维，重点探究PEO质量分数(40和60 mg/g)对体系的影响。实验表明，60 mg/g PEO壳液具有更高的黏度(28906 mPa·s)和更大的接触角(91.2°)，显著延缓了芯液铺展。所制备的纤维呈现均匀平行排列结构(平均直径(1865.0±16.9) nm)，并成功包埋CA活性成分。纤维表现出优异的亲水性和独特力学性能(抗拉强度0.8 MPa，断裂伸长率0.8%)，这源于GEL刚性网络与PEO柔性链的协同作用。研究揭示了芯壳界面演化的三阶段过程：初始黏度差驱动渗透、中期黏弹性网络松弛调控重组、最终达到面张力平衡。高PEO浓度通过增强黏弹性网络有效抑制芯液扩散，形成稳定界面结构。该研究为功能性芯壳纤维的可控制备提供了理论依据。

Abstract

Core-shell fibers

as micro-nano materials with embedding and encapsulation functions

possess significant application values in fields such as controlled drug release

tissue engineering

and smart textiles. In this study

microfluidic spinning technology was employed to fabricate core-shell fibers with gelatin (GEL)/poly(ethylene oxide) (PEO) as the shell layer and cinnamaldehyde (CA)/PEO as the core layer. The primary focus was on investigating the influence of PEO mass fraction (40 and 60 mg/g) on the system. The experimental results indicate that the 60 mg/g PEO shell solution exhibits a higher viscosity (28906 mPa·s) and a larger contact angle (91.2°)

significantly retarding the spreading of the core liquid. The prepared fibers displayed a uniform and parallel arrangement structure (with an average diameter of (1865.0±16.9) nm)

successfully embedding the active component of CA. The fibers demonstrated excellent hydrophilicity and unique mechanical properties (tensile strength of 0.8 MPa and elongation at break of 0.8%)

which can be attributed to the synergistic effect of the GEL rigid network and PEO flexible chain. This study elucidates a three-stage process of core-shell interface evolution: initial viscosity differences drive penetration

mid-term viscoelastic network relaxation regulates reorganization

and ultimately achieves surface tension equilibrium. A high PEO concentration effectively suppresses the diffusion of the core liquid by enhancing the viscoelastic network and forming a stable interface structure. This study provides theoretical support for the controlled preparation of functional core-shell fibers.

关键词

Keywords

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