Results 61 to 70 of about 3,662 (299)

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling   +7 more
wiley   +1 more source

Vibration welding of alpha and beta isotactic polypropylenes: Mechanical properties and structure

open access: yeseXPRESS Polymer Letters, 2008
Propylene homo- and copolymers (both random and block types) with and without beta nucleation were injection moulded and the related plaques joined by linear vibration welding. The melt flow index (MFI) of the polypropylenes was different.
doaj   +1 more source

Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor   +5 more
wiley   +1 more source

Comparative study between polypropylene and polypropylene/poliglecaprone meshes used in the correction of abdominal wall defect in rats [PDF]

open access: yesActa Cirúrgica Brasileira, 2012
PURPOSE: To evaluate the healing process of a defect in the ventral abdominal wall of rats, comparing the polypropylene and polypropylene/poliglecaprone meshes on the 30th and 60th postoperative day.
Carlos Alberto Lima Utrabo   +5 more
doaj  

Peritoneostomy with latex coated polypropylene: experimental study in rats Peritoniostomia com polipropileno revestido por látex: estudo experimental em ratos

open access: yesActa Cirúrgica Brasileira, 2006
PURPOSE: To evaluate if latex coated polypropylene mesh leads to less adhesions formation. METHODS: 90 rats were distributed in three groups. Group I (control) was submitted to median laparotomy and posterior synthesis; Group II (polypropylene) was ...
Renato Hugues Atique Claudio   +2 more
doaj   +1 more source

In Situ 3D Bioprinting: Impact of Cross‐Linking on the Adhesive Properties of Hydrogels

open access: yesAdvanced Functional Materials, EarlyView.
In situ 3D bioprinting enables the direct deposition of cell‐laden, adhesive biomaterials for on‐site tissue regeneration. This review provides a comprehensive overview of how cross‐linking influences the bioadhesive properties of hydrogels used in 3D bioprinting, highlighting cross‐linking triggers, bioadhesion mechanisms, polymer interpenetration ...
Odile Romero Fernandez   +4 more
wiley   +1 more source

Shaping of Biohybrid Functional Living Materials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates a strategy for shaping living mycelium into functional materials by directing its natural growth. Nanoparticles armor hyphae, micron‐scale particles entangle within the network, and printed hydrogel architectures steer expansion, creating defined geometries.
Sarah Schyck   +3 more
wiley   +1 more source

Elaborating more realistic model microplastics by simulating polypropylene's environmental ageing

open access: yesEcotoxicology and Environmental Safety
In this work, we propose a new protocol for producing model microplastics from an industrial polymer and compare it to a conventional method, cryomilling.
Margaux Glais   +4 more
doaj   +1 more source

Four-flanged polypropylene optic piercing technique for scleral fixation of multifocal intraocular lens

open access: yesBMC Ophthalmology, 2023
Background To evaluate the feasibility of creating flanges using an optic piercing technique with a 6 − 0 polypropylene monofilament for scleral fixation of dislocated one-piece diffractive multifocal intraocular lenses (IOLs).
Youngsub Eom   +9 more
doaj   +1 more source

Prepolymer dianhydrides [PDF]

open access: yes, 1980
A process for preparing dianhydrides that are miscible with hydroxyl prepolymers at moderate temperatures and can cure hydroxyl prepolymers to elastomers at moderate temperatures is disclosed.
Ingham, J. D., Rhein, R. A.
core   +1 more source

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