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Preparation of Compositional Gradient Polymeric Films Based on Gradient Mesh Template
In this paper, a template-filling method was found to prepare composition gradient gelatin films by incorporating α-[3-(2,3-epoxypropoxy) propyl]-ω-butyl-polydimethylsiloxane (PDMS–E) grafted gelatin (PGG) into a gradient gelatin mesh template. The method can be used to prepare other composition gra...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6404138/ https://www.ncbi.nlm.nih.gov/pubmed/30966711 http://dx.doi.org/10.3390/polym10060677 |
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author | Teng, Honglei Li, Jing Hou, Zhaosheng Yan, Xilu Han, Linru Xu, Jing Li, Tianduo |
author_facet | Teng, Honglei Li, Jing Hou, Zhaosheng Yan, Xilu Han, Linru Xu, Jing Li, Tianduo |
author_sort | Teng, Honglei |
collection | PubMed |
description | In this paper, a template-filling method was found to prepare composition gradient gelatin films by incorporating α-[3-(2,3-epoxypropoxy) propyl]-ω-butyl-polydimethylsiloxane (PDMS–E) grafted gelatin (PGG) into a gradient gelatin mesh template. The method can be used to prepare other composition gradient biopolymer films. Gradient mesh template prepared by the methacrylic anhydride cross-linked gelatin under temperature gradient field. The porosity of the template decreased from 89 to 35% which was accompanied by decrease in average pore size from 160 to 50 µm. Colloidal particles about 0.9~10 µm were formed from PGG after adding them to a mixed solvent system of 9:1 (v/v) of ethanol/water, which were filled in the mesh template under vacuum (0.06 MPa). A gradient film was obtained after drying at room temperature for 48 h. The results of scanning electron microscope-energy dispersive X-ray combined with freezing microtome and Fourier transform infrared spectroscopy suggested that the distribution of the Si element along the thickness showed a typical gradient pattern, which led to hydrophilic/hydrophobic continuous changing along the thickness of film. The water vapor permeability, thermal gravimetric analysis, differential scanning calorimetry and dynamic mechanical tensile results show that the gradient films had excellent water vapor permeability and flexibility, and hence could be used as biomimetic materials and leather finishing agents. |
format | Online Article Text |
id | pubmed-6404138 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64041382019-04-02 Preparation of Compositional Gradient Polymeric Films Based on Gradient Mesh Template Teng, Honglei Li, Jing Hou, Zhaosheng Yan, Xilu Han, Linru Xu, Jing Li, Tianduo Polymers (Basel) Article In this paper, a template-filling method was found to prepare composition gradient gelatin films by incorporating α-[3-(2,3-epoxypropoxy) propyl]-ω-butyl-polydimethylsiloxane (PDMS–E) grafted gelatin (PGG) into a gradient gelatin mesh template. The method can be used to prepare other composition gradient biopolymer films. Gradient mesh template prepared by the methacrylic anhydride cross-linked gelatin under temperature gradient field. The porosity of the template decreased from 89 to 35% which was accompanied by decrease in average pore size from 160 to 50 µm. Colloidal particles about 0.9~10 µm were formed from PGG after adding them to a mixed solvent system of 9:1 (v/v) of ethanol/water, which were filled in the mesh template under vacuum (0.06 MPa). A gradient film was obtained after drying at room temperature for 48 h. The results of scanning electron microscope-energy dispersive X-ray combined with freezing microtome and Fourier transform infrared spectroscopy suggested that the distribution of the Si element along the thickness showed a typical gradient pattern, which led to hydrophilic/hydrophobic continuous changing along the thickness of film. The water vapor permeability, thermal gravimetric analysis, differential scanning calorimetry and dynamic mechanical tensile results show that the gradient films had excellent water vapor permeability and flexibility, and hence could be used as biomimetic materials and leather finishing agents. MDPI 2018-06-18 /pmc/articles/PMC6404138/ /pubmed/30966711 http://dx.doi.org/10.3390/polym10060677 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Teng, Honglei Li, Jing Hou, Zhaosheng Yan, Xilu Han, Linru Xu, Jing Li, Tianduo Preparation of Compositional Gradient Polymeric Films Based on Gradient Mesh Template |
title | Preparation of Compositional Gradient Polymeric Films Based on Gradient Mesh Template |
title_full | Preparation of Compositional Gradient Polymeric Films Based on Gradient Mesh Template |
title_fullStr | Preparation of Compositional Gradient Polymeric Films Based on Gradient Mesh Template |
title_full_unstemmed | Preparation of Compositional Gradient Polymeric Films Based on Gradient Mesh Template |
title_short | Preparation of Compositional Gradient Polymeric Films Based on Gradient Mesh Template |
title_sort | preparation of compositional gradient polymeric films based on gradient mesh template |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6404138/ https://www.ncbi.nlm.nih.gov/pubmed/30966711 http://dx.doi.org/10.3390/polym10060677 |
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