نتایج جستجو برای: polypropylene pp

تعداد نتایج: 91529  

2009
Sangyeob Lee Todd F. Shupe Chung Y. Hse

Plasma-assisted surface treatment on thermomechanical pulp (TMP) fiber and polypropylene (PP) film was investigated to obtain interfacial adhesion at the wood fiber and PP interface. A metal plate between electrodes prevented thermal damage to the TMP fiber handsheets and PP film. Oxygen-plasma treatment provided better surface activation on the TMP fiber and PP film than argon-plasma treatment...

Journal: :IEEE Transactions on Nanotechnology 2021

This paper reports on an investigation into the effects of different multi-element oxide nanofillers structure and dielectric properties polypropylene (PP)-based nanocomposites. Magnesium aluminate (MgAl2O4), calcium carbonate (CaCO3) surface-modified (CaCO3T) have been added to PP determine their thermal properties, structural changes, response breakdown strength. The results show that nanocom...

2012
Kinga Zapala Ewa Piorkowska Anne Hiltner Eric Baer

Dispersions of isotactic polypropylene (PP) particles in polystyrene (PS) were produced by interfacially driven breakup of nanolayers in multilayered systems that were fabricated by means of layer-multiplying coextrusion. The droplet size was controlled by the individual PP layer thickness ranging from 12 to 200 nm. In addition, PP was melt blended with PS to produce PP droplets larger than tho...

Journal: :Crystals 2023

This work demonstrates how the addition of few-layer graphene (FLG) influences processability and mechanical properties mixed polyolefin waste stream (R-(PE/PP)). Three different types compounds were investigated: (1) R-(PE/PP) with FLG; (2) blends prime polyethylene (PE) or polypropylene (PP) PP copolymer; (3) both polymer FLG. The was assessed by measuring torque during melt extrusion, flow i...

Journal: :Journal of physics 2023

Abstract Special propylene-ethylene copolymer (PEC) and polypropylene (PP) fiber grade materials were blended through the melt-compounding method to prepare PP/PEC blends in varying proportions. Subsequently, further analysis was carried out on crystallinity, dispersibility, mechanical properties flexibility of blends. The results haven shown that PEC is uniformly dispersed PP matrix, whereas s...

Journal: :Frontiers in sustainable food systems 2023

In the present work, emission of volatile organic compounds (VOCs) from plastic packaging materials and their migration to packaged product was investigated. Fresh-cut artichokes were chosen as a case study owing nutritional profile, including phenolic compounds, antioxidants, inulin fiber, high market demand. Artichokes cut into quarters, in active modified atmosphere (5% O 2 10% CO ) three di...

Journal: :Journal of biotechnology 2007
Kavita Abrol G N Qazi Anup K Ghosh

Hollow fiber membrane offers the advantage to integrate catalytic conversion, product separation and catalyst recovery into a single separation process compared to conventional systems. Polypropylene (PP) hollow fiber membrane is a chemically inert and stable membrane with high potential for enzyme immobilization. The surface properties of polypropylene have been modified by radiation induced g...

Journal: :Polymers & Polymer Composites 2023

This present research aims to predict the mechanical behavior of composite and hybrid composites based on a polypropylene matrix (PP) reinforced by organic/inorganic naturally occurring fillers using analytical numerical models. It also demonstrate effect hybridization global stiffness material. In this study, Voigt-Reuss models, Halpin-Tsai equations, Hirsch model, simulation are applied effec...

Journal: :IOP conference series 2022

Abstract This study aims to find the cumulative energy demand (CED) and cost (CCD) in synthesis of antistatic bionanocomposites (AS BNC) compared with polypropylene (PP). The CED was identified using SimaPro 9.1.1 software, CCD material flow analysis (MEFA) method. results show that required per kg mass AS BNC pellets 87.80 MJ, which is lower than PP (91.19 MJ). shows use 94.38% PP, 2% M-DAG, 2...

Hybrid fiber reinforced concrete (HFRC) consisting of two or more different types of fibers has been widely investigated because of its superior mechanical properties. In the present study, the effect of the addition of steel (0.25%, 0.5%, 0.75%, and 1% of concrete volume) and Polypropylene (0.2%, 0.4%, and 0.6% of concrete volume) fibers on the surface scaling resistance of concrete, depth of ...

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