Biodegradable Composites
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. Gold Nanoparticles and [PEDOT-Poly(D,L-Lactic Acid)] Composite: Synthesis, Characterization and Application to H2O2 Sensing
Biocompatible electrochemical devices are challenging to develop due to the toxicity of many advanced electrode materials and the difficulty to degrade the discarded material. Few recent advances were made in the synthesis of conducting biodegradable composites of polymers for electrode materials. In this article we describe the synthesis of two new inorgani
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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2. Study on mechanical & thermal properties of PCL blended graphene biocomposites
Abstract Graphene is a new carbon based nonmaterial that attracts the technology and constitutes one of the great promises for nanotechnology applications in a near feature. It’s having versatile intrinsic mechanical, thermal and electrical properties.By Incorporation of small amount of graphene fillers into polymer matrix can create attractive bio composi
Polímeros. Publicado em: 04/07/2019
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3. Production of biocomposites from the reuse of coconut powder colonized by Shiitake mushroom
RESUMO A procura por compósito biodegradável vem crescendo mundialmente nos últimos anos, principalmente com o intuito de reduzir a contaminação ambiental por materiais estruturais produzidos a partir de derivados de petróleo. O objetivo deste estudo foi avaliar o crescimento de isolados do cogumelo comestível “Shiitake” (Lentinula edodes) em subs
Ciênc. agrotec.. Publicado em: 03/06/2019
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4. THE MULTIROLE OF MODIFIED NATURAL GUMS FOR MULTICOMPONENT POLYMERS: AS COUPLING AGENTS FOR POLYMERS REINFORCED WITH CELLULOSIC FIBERS OR COMPATIBILIZERS FOR BIODEGRADABLE POLYMER BLENDS
In this work, the capability to use pine rosin as a biodegradable coupling agent/compatibilizer is studied. To formulate composites, post-consumer polypropylene and discarded agave fibers (as reinforcing agent) are coupled with pine rosin (in pure or maleated form). Besides, poly(lactic acid) (PLA) with poly(butylene adipate-co-terephthalate) (PBAT) are comp
Quím. Nova. Publicado em: 02/05/2019
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5. Morphological, thermal and bioactivity evaluation of electrospun PCL/β-TCP fibers for tissue regeneration
Abstract Electrospinning is a simple and low-cost way to fabricate fibers. Among the various polymers used in electrospinning, polycaprolactone (PCL) stands out due to its excellent biodegradability and biocompatibility. However, PCL has some limitations such as low bioactivity, hydrophobic surface, and long in vivo degradation. Calcium phosphate ceramics h
Polímeros. Publicado em: 18/03/2019
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6. Nondestructive characterization of epoxy matrix composites reinforced with Luffa lignocellulosic fibers
ABSTRACT Luffa Cylindrica is a tropical plant from the Cucurbitaceae family, whose fruit becomes very fibrous when fully ripened. The lignocellulosic sponges of Luffa can be suitable for use as reinforcement of epoxy matrix composites, because they have a morphology with spatial 3-D arrangement as well as are eco-friendly materials (biodegradable, and high a
Matéria (Rio J.). Publicado em: 20/07/2017
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7. Biodegradation in Soil of the PHB/Wood Flour (80/20) and PHB/Sisal Fiber (80/20) Tubes
This paper presents the results of a study that aimed to monitor and evaluate biodegradation in soil, by the mass loss and the mechanical properties of plastic tubes. For this work, there were extruded and injected plastic tubes made of biodegradable polymer poly(hydroxybutyrate) - (PHB) and composite PHB/Wood Flour and PHB/Sisal Fiber, both with 20% fiber.
Mat. Res.. Publicado em: 11/05/2017
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8. Polyhydroxybutyrate Composites with Random Mats of Sisal and Coconut Fibers
Biodegradable polymeric composites using natural fibers have been investigated aiming to mitigate environmental impacts. In this paper, polyhydroxybutyrate (PHB) composites obtained using random mats of sisal and coconut fibers by compression molding in a hydraulic press, and the fiber content varied between 10% and 15% relative to the weight of the polymer.
Mat. Res.. Publicado em: 22/12/2016
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9. OBTENÇÃO DE COMPÓSITOS HÍBRIDOS BASEADOS EM HIDROGÉIS E CIMENTO PORTLAND
In this study, a novel hybrid composite based on biodegradable hydrogel and Portland cement with promising technological properties was reported. In the first step, a full 23 with central point factorial design was utilized to obtain the enhanced polyacrylamide-carboxymethylcellulose hydrogel compositions. A mathematical model was devised, indicating that th
Quím. Nova. Publicado em: 2016-02
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10. Evaluation of the influence of the use of waste from the processing of rice in physicochemical properties and biodegradability of PHB in composites
The high calorific value of rice husks has elevated its reuse as an energy source; however, the burning of these shells generates a waste ash from rice husk ash (RHA), which makes its disposal a concern. Despite advances, biodegradable polymers are not yet able to compete with those of traditional thermoplastics, which have lower production cost and higher p
Polímeros. Publicado em: 2014-12
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11. Development and characterization of hybrid materials based on biodegradable PLA matrix, microcrystalline cellulose and organophilic silica
The goal of this work was to investigate the production and properties of hybrid materials based on poly(lactic acid) (PLA), employing microcrystalline cellulose (MCC) and organophilic silica (R972) as fillers. The composites were obtained by solution casting to form films. Each nanoparticle was incorporated at 3 wt. %, relative to the polymer matrix. In thi
Polímeros. Publicado em: 30/09/2014
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12. Starch/poly (butylene adipate-co-terephthalate)/montmorillonite films produced by blow extrusion
This study aims to prepare biodegradable films from cassava starch, poly (butylene adipate-co-terephthalate) (PBAT), and montmorillonite (MMT) using blow-extrusion process and analyze the effects of different types and concentrations of MMT on the microstructure, physicochemical, and mechanical properties of the resulting films. The films were produced by bl
Quím. Nova. Publicado em: 2014-07