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Colloids Surf B Biointerfaces. 2018 Nov 1;171:647-655. doi: 10.1016/j.colsurfb.2018.08.004. Epub 2018 Aug 7.

Electrostatic and hydrophobic controlled self-assembly of PDMS-E grafted gelatin for self-cleaning application.

Author information

1
Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China.
2
College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250100, PR China.
3
Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China. Electronic address: litianduo@163.com.
4
Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China. Electronic address: xujing@qlu.edu.cn.

Abstract

Understanding the assembly mechanisms of supramolecular architectures in nature is essential for the design and synthesis of novel biomaterials. In the work, self-assembly of gelatin-mono epoxy terminated polydimethylsiloxane polymer (PGG) controlled by electrostatic and hydrophobic interactions between gelatin and sodium dodecyl sulfate (SDS) was investigated in suit. Confocal laser scanning microscopy, circular dichroism spectroscopy, high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy were conducted to reveal the structure evolution of PGG at a molecular level with the increment of SDS concentration, including micro-sized sphere, core-shell and multi-layer structure. Notably, the multi-layer structure was formed from the large contribution of antiparallel β-sheets on the boundary and new hydrophobic aggregation driven by higher monomer conversions. The delicate supramolecular architectures preliminarily present excellent anti-water, anti-contamination and anti-radiation properties in the surface of skin. The excellent self-cleaning function of PGG indicates potential application in biomaterials.

KEYWORDS:

Controlled; Electrostatic and hydrophobic; In-suit; PGG; Self-assembly; Self-cleaning

PMID:
30107338
DOI:
10.1016/j.colsurfb.2018.08.004
[Indexed for MEDLINE]

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