Morphologies and mechanical properties of organic-inorganic multilayered composites.(Report): An article from: Polymer Engineering and Science
Book Details
Author(s)Juan Li, Jinping Suo, Lintao Jia
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB003HQBQCU
ISBN-13978B003HQBQC9
MarketplaceCanada 🇨🇦
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on April 1, 2010. The length of the article is 4451 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: Organic-inorganic composites have received increasing attention because such composites exhibit improved optical, electrical, thermal, and mechanical behaviors by combining properties of both organic polymers and inorganic compounds. However, tensile strength is enhanced generally at the cost of decreasing ductility, which is not suitable for biomedical applications where tissue-like elasticity is required. In this study, multilayered poly(vinyl alcohol) (PVA)/silica composites were synthesized, which achieved a significant enhancement in tensile strength and ductility. The chemical structure, thermal stability, and fracture morphologies of multilayered films were investigated to analyze the reinforcement mechanism. The results showed that extensive plastic tearing took place in monolayered composites with low-silica contents and in all multilayered ones, whereas the monolayered composites with high-silica contents were dominated by brittle fracture. For layered composite with 30 wt% silica in the second layer, the elongation at break is 237.8%, which is 3.21 times that of monolayered 30% [SiO.sub.2]/PVA 74.0%. Also its tensile strength is 37.8 MPa, which is 1.52 times that of monolayered 30% [SiO.sub.2]/PVA 24.8 MPa. These improved mechanical properties broaden its potential application, especially the applications of PVA in medical materials, which are intensely discussed as biomaterials. POLYM. ENG. SCI., 50:689-696, 2010. [C]2009 Society of Plastics Engineers
Citation Details
Title: Morphologies and mechanical properties of organic-inorganic multilayered composites.(Report)
Author: Juan Li
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: April 1, 2010
Publisher: Society of Plastics Engineers, Inc.
Volume: 50 Issue: 4 Page: 689(8)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: Organic-inorganic composites have received increasing attention because such composites exhibit improved optical, electrical, thermal, and mechanical behaviors by combining properties of both organic polymers and inorganic compounds. However, tensile strength is enhanced generally at the cost of decreasing ductility, which is not suitable for biomedical applications where tissue-like elasticity is required. In this study, multilayered poly(vinyl alcohol) (PVA)/silica composites were synthesized, which achieved a significant enhancement in tensile strength and ductility. The chemical structure, thermal stability, and fracture morphologies of multilayered films were investigated to analyze the reinforcement mechanism. The results showed that extensive plastic tearing took place in monolayered composites with low-silica contents and in all multilayered ones, whereas the monolayered composites with high-silica contents were dominated by brittle fracture. For layered composite with 30 wt% silica in the second layer, the elongation at break is 237.8%, which is 3.21 times that of monolayered 30% [SiO.sub.2]/PVA 74.0%. Also its tensile strength is 37.8 MPa, which is 1.52 times that of monolayered 30% [SiO.sub.2]/PVA 24.8 MPa. These improved mechanical properties broaden its potential application, especially the applications of PVA in medical materials, which are intensely discussed as biomaterials. POLYM. ENG. SCI., 50:689-696, 2010. [C]2009 Society of Plastics Engineers
Citation Details
Title: Morphologies and mechanical properties of organic-inorganic multilayered composites.(Report)
Author: Juan Li
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: April 1, 2010
Publisher: Society of Plastics Engineers, Inc.
Volume: 50 Issue: 4 Page: 689(8)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
