Results 121 to 130 of about 128,191 (280)

Starch/polyester films: simultaneous optimisation of the properties for the production of biodegradable plastic bags

Polímeros, 2013
Blends of starch/polyester have been of great interest in the development of biodegradable packaging. A method based on multiple responses optimisation (Desirability) was used to evaluate the properties of tensile strength, perforation force, elongation ...
J. B. Olivato, M. V. E. Grossmann, A. P. Bilck, F. Yamashita, L. M. Oliveira   +4 more
doaj  

Property Rights Entrepreneurship: The Drive for Product, Asset, and Resource Excludability

Managerial and Decision Economics, EarlyView.
ABSTRACT Property rights are foundational to market economies, and entrepreneurial activity depends heavily on the excludability afforded by property rights. Yet, the role of entrepreneurs in shaping the evolution of property rights has been so thoroughly taken for granted that it often vanishes from analyses.
Thomas J. Dean, William R. Forster, Nicholas Dew   +2 more
wiley   +1 more source

CARACTERIZACIÓN MORFOLÓGICA DE PELÍCULAS BIODEGRADABLES A PARTIR DE ALMIDÓN MODIFICADO DE YUCA, AGENTE ANTIMICROBIANO Y PLASTIFICANTE CARACTERIZAÇÃO MORFOLÓGICA DE FILMES BIODEGRADÁVEIS A PARTIR DE AMIDO MODIFICADO DE MANDIOCA, AGENTE ANTIMICROBIANO E PLASTIFICANTE MORPHOLOGICAL CHARACTERIZATION OF BIODEGRADABLE FILMS MADE FROM MODIFIED CASSAVA STARCH, ANTIMICROBIAL AGENT AND PLASTICIZER

Biotecnología en el Sector Agropecuario y Agroindustrial, 2012
Se ha evaluado la morfología superficial de almidones termoplásticos (TPS) obtenidos de tres variedades de almidón modificado de yuca, plastificante y un agente antimicrobiano. Las películas fueron obtenidas por extrusión soplado, se acondicionaron a una
REINALDO VELASCO M, MARIO ENRÍQUEZ C., ANDRÉS TORRES R., LILY PALACIOS, JOHANA RUALES M.   +4 more
doaj  

Combined Effects of Thermal Cycling Aging and Reinforcement Content on the Ball‐On‐Disk Wear of Additively Manufactured Polylactic Acid Composites

Polymer Composites, EarlyView.
Thermal Aging and Tribological Tests of Additive Manufactured PLA Composites. ABSTRACT This study focuses on the additive manufacturing of pure polylactic acid (PLA) specimens and milled glass fiber (GF)‐filled PLA composites under thermal cycling aging and wear tests. Wear tracks have been analyzed via 3D optical profiling and SEM imaging.
Sinan Fidan, Satılmış Ürgün, Nevin Gamze Karsli, Taner Yilmaz, Mustafa Özgür Bora, Mehmet İskender Özsoy   +5 more
wiley   +1 more source

Additive Manufacturing of Glass Fiber‐Reinforced Polypropylene and Its Behavior Under Controlled Hydrogen Exposure

Polymer Composites, EarlyView.
Experimental and numerical assessment of GFRPP under lower experimental hydrogen pressures using tensile testing, SEM analysis, and hydrogen uptake estimation. ABSTRACT Glass fiber‐reinforced polypropylene (GFRPP) composites are increasingly explored for hydrogen transport and storage due to their lightweight nature and corrosion resistance.
Ahmadyar Qureshi, Ulises Martin, Abdul Mannan, Homero Castaneda   +3 more
wiley   +1 more source

Sustainable Overprinting of Recycled Carbon Fiber Reinforced Thermoplastic Composites With a Stabilized Surface Treatment Through In Situ Bonding

Polymer Composites, EarlyView.
Overprinting filament from recycled composites with surface treatment for flat substrate and curved substrate. ABSTRACT This study presents a sustainable 3D overprinting approach for recycling of discontinuous carbon fibers from both thermoset and thermoplastic composites, incorporating a stable fiber surface treatment with polydopamine/silica ...
Yahui Lyu, Jiang Wu, Aonan Li, Haoqi Zhang, Dongmin Yang   +4 more
wiley   +1 more source

Tribological Behavior of Additively Manufactured Dual‐Material Polymer Composites

Polymer Composites, EarlyView.
Layered architecture, tribological performance, and wear mechanisms of additively manufactured dual‐material hybrid polymer composites. ABSTRACT This study presents a novel material design approach for wear‐resistant sandwich‐structured hybrid composites fabricated using dual‐nozzle fused deposition modeling (FDM). By co‐printing commercially available
Zhiwang Li, Hang Dong, Jinqiao Liu, Li Chang   +3 more
wiley   +1 more source

Numerical modelling of the aluminium extrusion process when producing complex seactions. [PDF]

This thesis reports the analysis by FEM of both continuum and structural models describing the extrusion process. They were compared with experimental work and the agreement is satisfactory.
Longjang, Niu
core   +1 more source

Mechanical and Ballistic Performance of Composites Containing Aramid/EVA/Graphene‐Clay Nanostructured HDPE Laminates

Polymer Composites, EarlyView.
Ballistic tests using a novel composite configuraion. ABSTRACT Aramid fibers are extensively utilized in personal protective equipment owing to their lightweight and superior properties. This study proposes a novel composite structure comprising aramid fabric, EVA hotmelt films, and graphene‐clay nanostructured HDPE laminate, totalizing 20 repeated ...
Vagner Grison, Heitor Luiz Ornaghi Júnior, Rafael Rodrigues Dias, Iaci Pereira Miranda, Clarisse Rufino, Caio Bittencourt, Daiane Romanzini, Ademir José Zattera, Diego Piazza   +8 more
wiley   +1 more source

Decoupling Formulation and Processing Effects in Thermoplastic Starch Through a Data‐Driven Structure–Property Framework

Polymer Engineering &Science, EarlyView.
Processing‐property relationships in thermoplastic starch (TPS): plasticizer type, starch source and melt‐processing temperature establish a hierarchy of effects that governs process‐induced changes and the resulting TPS properties. ABSTRACT Thermoplastic starch (TPS) is a melt‐processable biopolymer whose properties depend strongly on formulation and ...
Cristina Pavón, Nerea Martínez, Alexandra Llidó Barragán, Juan López‐Martínez   +3 more
wiley   +1 more source