Results 21 to 30 of about 11,346 (234)

Mechanical properties and numerical simulation of FDM 3D printed PETG/carbon composite unit structures

open access: yesJournal of Materials Research and Technology, 2023
Carbon fibers (CFs) were used as reinforcement in developing a polyethylene terephthalate glycol (PETG)-based polymer composite using the fused deposition modeling (FDM) 3D printing technique.
Ibrahim M. Alarifi
doaj   +1 more source

Use of endospore-forming bacteria as an active oxygen scavenger in plastic packaging materials [PDF]

open access: yes, 2011
In this study the use of heat resistant endospore-forming aerobic microorganisms of the genus Bacillus amyloliquefaciens as an active oxygen scavenger in multilayer PET bottles was evaluated.
Anthierens, Tom   +11 more
core   +2 more sources

Influence of the notch-sharpening technique on styrene-acrylonitrile fracture behavior [PDF]

open access: yes, 2016
The Centre Catala del Plastic and Universidad Rey Juan Carlos laboratories joined forces to investigate the effect of the notch-sharpening technique on the fracture parameters of styrene-acrylonitrile.
Illescas Fernandez, Silvia   +4 more
core   +2 more sources

Thin-Shell Deployable Reflectors with Collapsible Stiffeners: Experiments and Simulations [PDF]

open access: yes, 2012
This paper presents an experimental and computational study of four deployable reflectors with collapsible edge stiffeners, to verify the differences in behavior that had been predicted in a previous theoretical study.
Pellegrino, Sergio, Tan, Lin Tze
core   +1 more source

Genes Translocated into the Plastid Inverted Repeat Show Decelerated Substitution Rates and Elevated GC Content. [PDF]

open access: yes, 2016
Plant chloroplast genomes (plastomes) are characterized by an inverted repeat (IR) region and two larger single copy (SC) regions. Patterns of molecular evolution in the IR and SC regions differ, most notably by a reduced rate of nucleotide substitution ...
Kuo, Li-Yaung   +3 more
core   +1 more source

Estrogenic chemicals often leach from BPA-free plastic products that are replacements for BPA-containing polycarbonate products [PDF]

open access: yes, 2014
Background: Xenobiotic chemicals with estrogenic activity (EA), such as bisphenol A (BPA), have been reported to have potential adverse health effects in mammals, including humans, especially in fetal and infant stages.
Bittner, George D.   +2 more
core   +2 more sources

Chemicals having estrogenic activity can be released from some bisphenol a-free, hard and clear, thermoplastic resins [PDF]

open access: yes, 2014
Background: Chemicals that have estrogenic activity (EA) can potentially cause adverse health effects in mammals including humans, sometimes at low doses in fetal through juvenile stages with effects detected in adults. Polycarbonate (PC) thermoplastic
Bittner, George D.   +4 more
core   +2 more sources

Electroless plating of NiP and Cu on polylactic acid and polyethylene terephthalate glycol-modified for 3D printed flexible substrates [PDF]

open access: yes, 2016
Electroless nickel and copper metallization of 3Dprinted polymers like polylactic acid and polyethylene terephthalate glycol modified is presented. The plating process is tested on suitable samples, which reproduce the characteristic morphologies used in
Bernasconi, R.   +3 more
core   +1 more source

Comprehensive structural evaluation of composite materials in 3D-printed shin guards

open access: yesJournal of Materials Research and Technology, 2023
This study introduces a novel approach to designing and fabricating lightweight football shin guards, leveraging advanced digital anatomical capture of players' shins and 3D printing techniques.
Modhi I. Alarifi, Ibrahim M. Alarifi
doaj   +1 more source

Scaling of the Strain Hardening Modulus of Glassy Polymers with the Flow Stress

open access: yes, 2009
In a recent letter, Govaert et al. examined the relationship between strain hardening modulus $G_r$ and flow stress $\sigma_{flow}$ for five different glassy polymers.
Argon   +25 more
core   +3 more sources

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