Poly(vinylidene fluoride) was grafted with maleic anhydride through reactive extrusion by using diisopropyl benzene peroxide as an initiator and 9-vinyl anthracene as a stabilizer. Effects of various ...parameters on grafting degree were investigated including the amounts of monomer, initiator and stabilizer. The maximum extent of grafting achieved was 0.74%. The graft polymers were characterized using FTIR, water contact angle, thermal, mechanical and XRD studies. Improved hydrophilic and mechanical properties were observed for graft polymers.
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IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
•Shuttle/flower-like hydroxyapatie crystals have been synthesized under the combined action of sodium citrate and F127.•The morphology of the HAP particles evolved from nanoshuttles to hierarchical ...microflowers.•The HAP microflower exhibits fast adsorption ability for heavy metal ions.
Shuttle/flower-like hydroxyapatie crystals have been fabricated by a simple hydrothermal treatment under the combined action of sodium citrate and a pluronic triblock copolymer (F127). The morphology characterization results demonstrate that the hierarchical flower-like hydroxyapatite microcrystals are evolved from the one-dimensional hydroxyapatie nanoshuttles. The effects of the additives and hydrothermal time on the morphology are studied. Based on the experiment results, this work presents a possible growth mechanism for the hydroxyapatite morphology. Remarkably, the adsorption experiments results exhibit that the HAP microflower have fast adsorption ability for heavy metal ions.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Given the environmental benefits, poly(vinylidene fluoride) (PVDF)‐based composite powder coating was developed without using any harmful solvent. However, it still remains poor adhesion to ...substrates and low compatibility to acrylic resin issues. To address these challenges, PVDF was grafted with glycidyl methacrylate (GMA) through a facile and scalable reactive extrusion method. The resulting product, PVDF‐g‐GMA, was then mixed with different contents of polymethyl methacrylate (PMMA), and the mixing was sprayed onto aluminum substrates. The PVDF‐g‐GMA/PMMA powder coating shows the excellent adhesion and corrosion resistance, particularly when the PMMA content is 30 wt%, owning to the good compatibility of PVDF‐g‐GMA and PMMA. This work opens up a new possibilities for the development of advanced composite powder coatings with improved performance characteristics.
In this article, the glycidyl methacrylate was successfully grafted onto polyvinylidene fluoride (PVDF) molecular chain by a simple melt extrusion grafting method. Then the grafts were blended with different contents of polymethyl methacrylate to prepare PVDF powder coating with good adhesion and high corrosion resistance.
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BFBNIB, FZAB, GIS, IJS, KILJ, NLZOH, NUK, OILJ, SAZU, SBCE, SBMB, UL, UM, UPUK
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