Results 51 to 60 of about 1,876 (297)
Vibration welding of alpha and beta isotactic polypropylenes: Mechanical properties and structure
eXPRESS 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.
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Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes
Advanced Materials, EarlyView.Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro +13 more
wiley +1 more source
Comparative study between polypropylene and polypropylene/poliglecaprone meshes used in the correction of abdominal wall defect in rats [PDF]
Acta 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
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Acta 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
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Synthesis and applications of functionalised polypropylenes
This thesis discusses the synthesis of functionalised polypropylenes via a two-step copolymerisation-post-modification strategy. The resulting functionalised polypropylenes display distinctly altered bulk and surface properties, compared to polypropylene,
Evans, Alexander
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, 2018 Recent reports have described deuterium exchange reactions on polyolefins; such isotopic labeling enables powerful analytical techniques, but exchange on isotactic polypropylene was previously unsuccessful.
Daniel W. Baugh (4845808) +1 more
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Advanced Materials, EarlyView.Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine +5 more
wiley +1 more source
Advanced Materials, EarlyView.We address the inherently weak particle adhesion of conventional air filters by coating a dynamically crosslinked adhesive layer that delivers capillarity‐driven strong adhesion and particle absorption mediated by dynamic bond exchange. The resulting enhancement in particle adhesion enables efficient ultrafast (up to 20 m s−1) and omnidirectional ...
Junyong Park +11 more
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Elaborating more realistic model microplastics by simulating polypropylene's environmental ageing
Ecotoxicology and Environmental SafetyIn 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
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BMC 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
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