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A Pseudo-Block Copolymerization Access to Cyclic Alternating Copolymers through Segment-Selective Transesterification.
ACS Macro Lett
January 2025
Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China.
Efficient synthesis of cyclic polymers remains a frontier challenge. We report here that macromolecular transesterification during a pseudoblock copolymerization process can be utilized for such a purpose. Organobase-catalyzed ring-opening alternating copolymerization of 3,4-dihydrocoumarin and epoxide is conducted with four-armed poly(ethylene oxide) (PEO) as a macroinitiator.
View Article and Find Full Text PDFBiofilm morphology and antibiotic susceptibility of methicillin-resistant (MRSA) on poly-D,L-lactide--poly(ethylene glycol) (PDLLA-PEG) coated titanium.
Biofilm
December 2024
Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Biodegradable polymeric coatings are being explored as a preventive strategy for orthopaedic device-related infection. In this study, titanium surfaces (Ti) were coated with poly-D,L-lactide (PDLLA, (P)), polyethylene-glycol poly-D,L-lactide PEGylated-PDLLA, (PP20)), or multi-layered PEGylated-PDLLA (M), with or without 1 % silver sulfadiazine. The aim was to evaluate their cytocompatibility, resistance to biofilm formation, and their potential to enhance the susceptibility of any biofilm formed to antibiotics.
View Article and Find Full Text PDFDevelopment of reed-based cellulose aerogel: a sustainable solution for crude oil spill clean-up.
R Soc Open Sci
January 2025
Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City (IUH), Ho Chi Minh 71420, Vietnam.
This study focused on fabricating a cellulose aerogel for oil spill clean-up, using common reed () as the cellulose source. The process involved isolating cellulose from reed via traditional Kraft pulping, considering the effects of key factors on the isolated cellulose content. After a two-stage HP bleaching sequence, the highest cellulose content achieved was 27.
View Article and Find Full Text PDFFabrication and characterization of 3D-printed polymeric-based scaffold coated with bioceramic and naringin for a potential use in dental pulp regeneration (in vitro study).
Int Endod J
January 2025
Restorative and Aesthetic Dentistry Department, College of Dentistry, University of Baghdad, Baghdad, Iraq.
Aim: 3D-printed scaffolds loaded with healing directed agents could be employed for better treatment outcome in regenerative dentistry. The aim of this study was to fabricate and characterize simple 3D-printed poly lactic acid (PLA) scaffolds coated with nanoHydroxyapatite (nHA), Naringin (NAR), or their combination, and testing their morphological, chemical, mechanical, antibacterial, biocompatible and bioactive properties.
Methodology: Two variants pore sizes, 300 and 700 μm, of 3D-printed PLA disc scaffolds measuring (10 × 1 mm) were fabricated.
Exploration of Polyhydroxybutyrate (PHB) Production Potential of Photosynthetic Microbes: A Sustainable Source of Bioplastic.
Recent Pat Biotechnol
December 2024
Department of Zoology, University of Education, Bank Road Campus, Lahore, Pakistan.
Introduction: The present study examined Polyhydroxy butyrate production (PHB) potential of different photosynthetic microbes such as Chlorella vulgaris, Scenedesmus obliquus and Rhodobacter capsulatus-PK under different nutrient conditions. Biodegradable bioplastics, such as Poly-β-hydroxybutyrates (PHB), derived from these microbes provide a sustainable alternative to conventional petroleum-based nondegradable plastics.
Background: As the demand for clean and sustainable alternatives rises, bio-plastic is gaining attention as a viable substitute to conventional plastics.
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