Results 61 to 70 of about 9,722 (235)

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

What Has Been Trending in the Research of Polyhydroxyalkanoates? A Systematic Review

Frontiers in Bioengineering and Biotechnology, 2020
Over the past decades, enormous progress has been achieved with regard to research on environmentally friendly polymers. One of the most prominent families of such biopolymers are bacterially synthesized polyhydroxyalkanoates (PHAs) that have been known ...
Maciej Guzik, Tomasz Witko, Alexander Steinbüchel, Alexander Steinbüchel, Magdalena Wojnarowska, Mariusz Sołtysik, Sławomir Wawak   +6 more
doaj   +1 more source

Cascading Beta-oxidation Intermediates for the Polyhydroxyalkanoate Copolymer Biosynthesis by Metabolic Flux using Co-substrates and Inhibitors

Designed Monomers and Polymers, 2023
Polyhydroxyalkanoates (PHAs) are biopolymers that are produced within the microbial cells in the presence of excess carbon and nutrient limitation. Different strategies have been studied to increase the quality and quantity of this biopolymer which in ...
Geethu Madhusoodhanan, Shruthi KS, Raghu Chandrashekar Hariharapura, Divyashree M Somashekara   +3 more
doaj   +1 more source

Improvement of Mechanical Properties of PCL Nanofibers Through Thermo‐Compression Process

Polymer Engineering &Science, EarlyView.
Thermo‐compression enhances interfiber connectivity and mechanical properties of electrospun PCL nanofibers by controlling temperature, pressure, and duration, with the resulting behavior interpreted using the Deborah number. ABSTRACT Recently, polymeric nanofibers have been widely used in various fields, including electronics and optics, filtration ...
Min Jae Seo, Jeong Hwa Kim, Young Hun Jeong   +2 more
wiley   +1 more source

SELEÇÃO POLIFÁSICA DE MICRORGANISMOS PRODUTORES DE POLIHIDROXIALCANOATOS

Química Nova
Polyhydroxyalkanoates (PHAs) are fully biodegradable biopolyesters produced by many prokaryotes and accumulated as insoluble cytoplasmatic inclusions. The detection of these intracellular granule is usually provided using lipofilic azodyes, which are not
Amanda L. S. Silva, Elane C. L. dos Santos, Ítalo A. P. dos Santos, Ana M. Q. López   +3 more
doaj   +1 more source

Properties of Halococcus salifodinae, an Isolate from Permian Rock Salt Deposits, Compared with Halococci from Surface Waters

Life, 2013
Halococcus salifodinae BIpT DSM 8989T, an extremely halophilic archaeal isolate from an Austrian salt deposit (Bad Ischl), whose origin was dated to the Permian period, was described in 1994.
Helga Stan-Lotter, Gerhard Wanner, Helmut König, Harald Claus, Claudia Gruber, Burkhard Knopf, Peter Pfeiffer, Marion Dornmayr-Pfaffenhuemer, Ewald B. M. Denner, Andrea Legat   +9 more
doaj   +1 more source

Resource acquisition and allocation traits in symbiotic rhizobia with implications for life-history outside of legume hosts [PDF]

Royal Society Open Science, 2018
Resources that microbial symbionts obtain from hosts may enhance fitness during free-living stages when resources are comparatively scarce. For rhizobia in legume root nodules, diverting resources from nitrogen fixation to polyhydroxybutyrate (PHB) has ...
Katherine E. Muller, R. Ford Denison
doaj   +1 more source

Polybutylene Adipate Terephthalate Meltblown Nonwoven With Annular Meltblown Die: Processability and Structure–Property Relationship

Polymer Engineering &Science, EarlyView.
Schematics of meltblown fiber formation with key processing parameters and their influences on processing window and nonwoven barrier properties. ABSTRACT This study evaluates the meltblown processing behavior of Polybutylene Adipate Terephthalate (PBAT), one of promising biodegradable polymers, and investigates the complex processing–structure ...
Eunkyoung Shim, Mehmet Dasdemir, Natalie Young, Behnam Pourdeyhimi   +3 more
wiley   +1 more source

Towards Sustainable PP Composites: The Roles of Pineapple Crown Fibers (PCFs) and Functional Additives on the PP Rheological and Viscoelastic Behaviors

Polymer Engineering &Science, EarlyView.
Preparation and rheological characterization of polypropylene composites reinforced with pineapple crown fibers and compatibilized with organic acids. ABSTRACT This research presents a comprehensive rheological and viscoelastic study of polypropylene (PP) composites reinforced with pineapple crown fibers (PCF) and compatibilised using carboxylic acids (
Giordano Pierozan Bernardes, Otavio Bianchi, Matheus Poletto   +2 more
wiley   +1 more source

Diversity and physiology of polyhydroxyalkanoate-producing and -degrading strains in microbial mats [PDF]

, 2013
13 pages, 2 figures, 5 tablesPhotosynthetic microbial mats are sources of microbial diversity and physiological strategies that reflect the physical and metabolic interactions between their resident species.
Guerrero, Ricardo, Villanueva, Laura, Campo, Javier del   +2 more
core   +1 more source