نتایج جستجو برای: polypropylene matrix

تعداد نتایج: 372445  

Journal: :Revista do Colegio Brasileiro de Cirurgioes 2012
Caroline Kist Bibiana Borges Manna Juliano Hermes Maeso Montes André Vicente Bigolin João Vicente Machado Grossi Leandro Totti Cavazzola

OBJECTIVE To compare intraperitoneal adhesion formation with placement of polypropylene mesh and use of lightweight polypropylene mesh coated with omega-3 fatty in rats. METHODS Twenty-seven Wistar rats were randomized into three groups. In group 0 no mesh was placed; in group 1 we implanted a polypropylene mesh; and in group 2 there was implantation of a polypropylene mesh coated with omega-...

2012

Objective: To compare intraperitoneal adhesion formation with placement of polypropylene mesh and use of lightweight polypropylene mesh coated with omega-3 fatty in rats. Methods: Twenty-seven Wistar rats were randomized into three groups. In group 0 no mesh was placed; in group 1 we implanted a polypropylene mesh; and in group 2 there was implantation of a polypropylene mesh coated with omega-...

2009
Xianqiang Tang Suiliang Huang Chiu-On Ng Jinzhong Li

Removal of nitrogen and phosphorus is known to be somewhat problematic in vertical subsurface flow (VSSF)constructed wetlands. In this pilot-scale study, two planted (Typha latifolia L. [cattail]) VSSF-constructed wetlands A (with polypropylene pellets) and B (without polypropylene pellets) and one unplanted control C (without polypropylene pellets) were designed to test the contribution of pol...

2006
Y. Xue M. F. Horstemeyer

The mechanical properties of newly developed aspen fiber–polypropylene composites (APC) were experimentally explored and numerically predicted at the temperatures and humidity that are typical for domestic housing applications. The mechanical properties of APCs with five different fiber-loadings were evaluated at the room temperature, 4 �C, and 40 �C. Environmental effects on the mechanical pro...

2014
Alejandra J. Monsiváis-Barrón Jaime Bonilla-Rios Antonio Sánchez-Fernández

Polypropylene composites with different filler contents were prepared by creating a masterbatch containing 3 wt%. filler. A variety of silanol groups were used to synthetized three compounds in different media trough a sol-gel process with acetic acid, formic acid and ammonium hydroxide as catalysts. Besides, four different nanotubular fillers were also used to analyze their behavior and compar...

2014
Marianna I. Triantou Petroula A. Tarantili

In this research work, poly (acrylonitrile-butadienestyrene)/polypropylene (ABS/PP) blends were processed by melt compounding in a twin-screw extruder. Upgrading of the thermal characteristics of the obtained materials was attempted by the incorporation of organically modified montmorillonite (OMMT), as well as, by the addition of two types of compatibilizers; polypropylene grafted with maleic ...

2013
Jinchun Zhu Huijun Zhu James Njuguna Hrushikesh Abhyankar

This work describes flax fibre reinforced polymeric composites with recent developments. The properties of flax fibres, as well as advanced fibre treatments such as mercerization, silane treatment, acylation, peroxide treatment and coatings for the enhancement of flax/matrix incompatibility are presented. The characteristic properties and characterizations of flax composites on various polymers...

Journal: :Journal of biomedical materials research. Part A 2014
Matthew T Wolf Christopher A Carruthers Christopher L Dearth Peter M Crapo Alexander Huber Olivia A Burnsed Ricardo Londono Scott A Johnson Kerry A Daly Elizabeth C Stahl John M Freund Christopher J Medberry Lisa E Carey Alejandro Nieponice Nicholas J Amoroso Stephen F Badylak

Surgical mesh devices composed of synthetic materials are commonly used for ventral hernia repair. These materials provide robust mechanical strength and are quickly incorporated into host tissue; factors that contribute to reduced hernia recurrence rates. However, such mesh devices cause a foreign body response with the associated complications of fibrosis and patient discomfort. In contrast, ...

2015
Tilo Köckritz Tom Schiefer Irene Jansen Eckhard Beyer

This article examines the development of a laser pretreatment method for glass fibre reinforced polypropylene surfaces for industrial applications. This work aims to create a reproducible surface for bonding low-energy polypropylene which adheres very poorly to most adhesives and forms to the matrix material for plastic composites. The combination of glass fibres with polypropylene in the form ...

2012
Shubhalakshmi Sengupta Pulakesh Maity Dipa Ray Anirudhha Mukhopadhyay

The industrial wastes fly ash (FA) and polypropylene (PP) were used to develop novel green composites using a renewable, cheap coupling agent i.e. stearic acid. The fly ash (FA) particles were coated with stearic acid (SA) in different weight % like 0, 1, 2, 3 and 5. The SA coated fly ash particles were incorporated as filler in recycled polypropylene (RPP) matrix which was obtained from post-c...

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