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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...

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Autores principales: Teng, Honglei, Li, Jing, Hou, Zhaosheng, Yan, Xilu, Han, Linru, Xu, Jing, Li, Tianduo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
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.
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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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