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Nanostructures, Linear Rheological Responses, and Tunable Mechanical Properties of Microphase-Separated Cellulose--Diblock Bottlebrush Copolymer Elastomers.
Biomacromolecules
August 2023
Key Laboratory of Precision and Intelligent Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
A series of cellulose--diblock bottlebrush copolymer elastomers (cellulose--poly(-butyl acrylate)--poly(methyl methacrylate) (Cell--PBA--PMMA)) with short side chains were synthesized via successive atom transfer radical polymerization (ATRP) to study the influence of varying compositions and lengths of the graft diblock side chains on microphase morphologies and properties. The microphase-separated morphologies from misaligned spheres to cylinders were observed by atomic force microscopy (AFM) and small-angle X-ray scattering (SAXS) measurements. These bottlebrush copolymer elastomers possessed thermal stability and enhanced mechanical properties because the PMMA outer block could self-assemble into hard microdomains, which served as physical cross-links.
View Article and Find Full Text PDFSynthesis of Starch-Grafted Polymethyl Methacrylate via Free Radical Polymerization Reaction and Its Application for the Uptake of Methylene Blue.
Molecules
September 2022
Department of Life Sciences, School of Science, University of Management and Technology (UMT), C-II Johar Town, Lahore 54770, Pakistan.
In this research, a new biodegradable and eco-friendly adsorbent, starch-grafted polymethyl methacrylate (St-g-PMMA) was synthesized. The St-g-PMMA was synthesized by a free radical polymerization reaction in which methyl methacrylate (MMA) was grafted onto a starch polymer chain. The reaction was performed in water in the presence of a potassium persulfate (KPS) initiator.
View Article and Find Full Text PDFOsteomyelitis and Gentamicin-PMMA Chains.
Clin Nucl Med
November 2022
From the Department of Nuclear Medicine, Centre Hospitalier du Mans, Le Mans, France.
In chronic osteomyelitis, effective local antibiotic therapy after surgical debridement can be achieved by implantation of gentamicin-PMMA chains. The gentamicin concentrations at the site of infection are higher than that after systemic application of the same antibiotic. The appearance of this treatment is a particular aspect from a radiological point of view.
View Article and Find Full Text PDFAntibacterial Effect of a 4x Cu-TiO₂ Coating Simulating Acute Periprosthetic Infection-An Animal Model.
Molecules
June 2017
Department of Orthopaedic Surgery, Friedrich-Alexander-University Erlangen-Nuremberg, Rathsbergerstr. 54, 91054 Erlangen, Germany.
The purpose of our study was to investigate the antibacterial effect of a spacer (Ti6Al4V) coated with 4x Cu-TiO₂ in an animal model simulating an acute periprosthetic infection by . Ti6Al4 bolts contaminated with were implanted into the femoral condyle of rabbits (n = 36) divided into 3 groups. After one week in group 1 (control) the bolts were removed without any replacement.
View Article and Find Full Text PDFVerrucous lichen planus following contact sensitivity to implanted gentamicin-polymethylmethacrylate bead chains.
J Eur Acad Dermatol Venereol
January 2017
Department of Dermatology and Venereology, Otto-von-Guericke University, Magdeburg, Germany.
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