WebPEIs can be sterilized by ethylene oxide and high-energy radiations like gamma and e-beam without losing their physical and mechanical properties. They are stable up to radiation doses of 80 kGy, retaining up to 80% of their properties, after which rapid degradation occurs, as shown in Figure 8.16[11]. Sign in to download full-size image WebI am Pei Wei (Perry) Chen, a student graduating in 2024 from the EE Department of National Taiwan University. My research of interests mainly focus on Computer Aided Design (including logic ...
US20240204224A1 - Synthesis of linear …
WebJan 10, 2024 · Pei et al. show a green electrochemical method to fully oxidize the graphite lattice in a few seconds, which is over 100 times faster than existing methods. ... However, the present synthesis ... Polyethylenimine (PEI) or polyaziridine is a polymer with repeating units composed of the amine group and two carbon aliphatic CH2CH2 spacers. Linear polyethyleneimines contain all secondary amines, in contrast to branched PEIs which contain primary, secondary and tertiary amino groups. Totally … See more The linear PEI is a semi-crystalline solid at room temperature while branched PEI is a fully amorphous polymer existing as a liquid at all molecular weights. Linear polyethyleneimine is soluble in hot water, at low pH, in See more Branched PEI can be synthesized by the ring opening polymerization of aziridine. Depending on the reaction conditions different degree of … See more • Tetraethylenepentamine • Ethylenediamine • Polyetherimide (Also goes by PEI) See more Polyethyleneimine finds many applications in products like: detergents, adhesives, water treatment agents and cosmetics. Owing to its ability to modify the surface of cellulose fibres, … See more downloads nsa
Scalable, Versatile Synthesis of Ultrathin Polyetherimide Films and ...
WebPolyethylenimine (PEI) is being used as a DNA transfection agent1-5. Complexes of DNA and PEI are known to pass through cell walls, and studies have reported that PEI’s efficiency as a gene delivery vehicle depends on its molecular mass1. These assays were performed with commercial PEI that was poorly characterized. WebIn this study, we report a facile, one-step hydrothermal method to synthesize PEI-functionalized Ag nanoparticles in which no extra reducing agent is needed and PEI … WebJul 14, 2009 · Quaternary ammonium polyethyleneimine- (QA-PEI-) based nanoparticles were synthesized using two synthetic methods, reductive amination and N-alkylation. According to the first method, QA-PEI nanoparticles were synthesized by cross-linking with glutaraldehyde followed by reductive amination with octanal and further N-methylation … downloads nwea