Results 201 to 210 of about 12,751 (266)

Synthesis of a Novel Amine‐Based Curing Agent for Epoxy Resins Derived From Vanillin

open access: yesJournal of Applied Polymer Science, EarlyView.
The four‐step synthesis of a new bio‐based amine hardener is described starting from vanillin as a bio‐based compound. The hardener ADBA was utilized to cure DGEBA and the resulting Tg,tanδmax was determined via DMA. Compared to other bio‐based curing agents, our curing agent is obtainable in a high yield and leads to a superior Tg of 135°C.
Bastian Hahn   +3 more
wiley   +1 more source

Valorization of Post‐Consumer Waste From Metallized Flexible Packaging and Industrial EPM Waste: Development of Sustainable Composites

open access: yesJournal of Applied Polymer Science, EarlyView.
Post‐consumer metallized flexible packaging waste and industrial EPM waste are transformed into sustainable composites through mechanical recycling. The incorporation of 30 wt% EPM provides the most favorable balance between stiffness, ductility, and impact resistance, achieving 53.36 kJ/m2.
Tiago O. Oliveira   +2 more
wiley   +1 more source

Material Characterization of Lignin‐Filled Polypropylene Composites

open access: yesJournal of Applied Polymer Science, EarlyView.
Ground and spray‐dried lignin powders are compared as fillers for polypropylene composites. Differences in powder preparation methods are associated with differences in powder characteristics and composite behavior after melt compounding. Spray‐dried lignin produces smaller particles and fewer large agglomerates, while a 5 wt% lignin loading provides a
Sungjun Hwang   +3 more
wiley   +1 more source

Mixing and Compounding of Graphene/High Density Polyethylene Nanocomposites Using Twin‐Screw and Octa‐Screw Extrusions: A Comparative Study

open access: yesJournal of Applied Polymer Science, EarlyView.
Advanced octa‐screw extrusion offers a breakthrough in compounding high‐viscosity polymer nanocomposites. By comparing twin‐ and octa‐screw extruders, this study reveals that the octa‐screw's unique intermeshing geometry achieves superior graphene exfoliation while preventing thermal degradation.
Cheng‐Ying Liu   +2 more
wiley   +1 more source

Fabrication of Polypropylene/CNF Composite Foam by Foam Extrusion With Chemical Blowing Agent

open access: yesJournal of Applied Polymer Science, EarlyView.
Polypropylene/CNF composite foams were fabricated by a foam extrusion process using a chemical foaming method. The addition of CNFs resulted in finer and higher‐density cell structures, even at low chemical blowing agent concentrations. Furthermore, X‐ray CT and SEM observations revealed a unique spike‐like cell structure generated by the penetration ...
Itsuki Yoshikawa   +2 more
wiley   +1 more source

Identification and characterization of the powdery mildew resistance in a spelt accession Lsy-93. [PDF]

open access: yesBMC Plant Biol
Sun N   +11 more
europepmc   +1 more source

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