Results 91 to 100 of about 2,049 (283)

Fish Scales: A Multifunctional Biomaterial from Nature

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Molecular, rheological, and crystalline properties of low-density polyethylene in blown film extrusion

, 2007
The molecular weight and its distribution, degree of long chain branching and cooling rate strongly influence crystallinity during processing, which in turn determines the processability and the ultimate properties of the blown film. Generally a decrease
Khokan Majumder (19972380), Graham Hobbs (19972383), Satinath Bhattacharya (18043654)   +2 more
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Blade Count and Rotational Speed Sensitivity of Vertical‐Axis Turbines Under Guided Vehicle‐Generated Transient Wakes

Energy Science &Engineering, EarlyView.
Passing vehicles generate short‐duration wakes that can be redirected toward a vertical‐axis turbine. The interaction between wake structure, blade count, and rotational speed governs transient torque production. Low‐solidity configurations combined with tuned rotational speed enhance energy extraction under vehicle‐induced gusts.
Aydin Ulus, Stefan Ilie Moldovan
wiley   +1 more source

Mechanical Behavior Optimization of Chitosan Extracted from Shrimp Shells as a Sustainable Material for Shopping Bags

Journal of Functional Biomaterials, 2018
The use of biodegradable materials for shopping bag production, and other products made from plastics, has recently been an object of intense research—with the aim of reducing the environmental burdens given by conventional materials. Chitosan is a
Giacomo D’Angelo, Amal Elhussieny, Marwa Faisal, I. S. Fahim, Nicola M. Everitt   +4 more
doaj   +1 more source

REAL-TIME RAMAN SPECTROSCOPY AND WIDE-ANGLE X-RAY DIFFRACTION DURING SINGLE-LAYER AND MULTI-LAYER BLOWN FILM EXTRUSION

, 2008
Properties exhibited by blown films are controlled by the microstructure developed during their processing. Therefore, real-time measurement of microstructure during the blown film extrusion can help in better control and optimization of the process ...
Gururajan, Giriprasath
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UNDERSTANDING RHEOLOGY AND TECHNOLOGY OF POLYMER EXTRUSION [PDF]

, 2019
Polymer basics. Viscosity and unidirectional melt flows. Shear thinning, viscous dissipation, Generalized Newtonian Fluid, power-law. Viscoelasticity, normal stress differences, elongational viscosity, extrudate (die) swell, stress relaxation and ...
Polychronopoulos, Nickolas D., Vlachopoulos, John   +1 more
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Oxygen Barrier Properties of PHA-Based Bio-blend Flexible Packaging Films Prepared by Blown Extrusion

, 2023
Today, the use of biopolymers in the flexible packaging industry has become very important in termsof sustainability and climate crisis.
Deniz, Sennur, Çokkuvvetli, Ayşe Tuğçe, Yolaçan, Öznur   +2 more
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Bioactive Magnesium Silicate Activating Myocardial Energy Metabolism For Infarcted Myocardium Repair

Exploration, EarlyView.
ABSTRACT The heart is a highly energy‐dependent organ, developing bioenergy‐activating biomaterials to activate myocardial adenosine triphosphate (ATP) production and restore dysregulated energy homeostasis is a promising solution for its functional recovery.
Zhibin Liao, Chen Qin, Erhong Song, Chengbin Ding, Zhixu Wang, Yan Sun, Chen Song, Junjie Liu, Jingge Ma, Hongjian Zhang, Leyu Wang, Chengtie Wu   +11 more
wiley   +1 more source

Unlocking degradation mechanisms in prodegradant-modified PVC under UV irradiation: Insights into abiotic degradation

Next Materials
The development of oxo-biodegradable polyvinyl chloride (PVC OBD) is an emerging field aimed at addressing the environmental impact of PVC by enhancing its degradability.
Ernie S.A. Soekotjo, Soen Steven, Elsye V. Yemensia, Yurohman Yurohman, Zarlina Zainudin, Hafis P.R. Graha, Tjokorde W. Samadhi, Nugroho A. Sasongko, Akhmad Z. Abidin   +8 more
doaj   +1 more source

Extrusion foaming of poly(lactic acid) blown with CO\u2082 : Toward 100% green material

, 2007
This paper presents a thorough investigation of the continuous extrusion foaming of amorphous poly(lactic acid) (PLA) using carbon dioxide (CO\u2082) as the blowing agent.
Gendron, Richard, Reignier, Jo\uebl, Champagne, Michel F.   +2 more
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