Polyethylenimine - Wikipedia
Polyethylenimine (PEI) or polyaziridine is a polymer with repeating units composed of the amine group and two carbon aliphatic CH 2 CH 2 spacers. Linear polyethyleneimines contain all secondary amines , in contrast to branched PEIs which …
Polyetherimide (PEI) Polymer: Structure, Material Properties
By selecting the right PEI grade, you can optimize product performance, reduce costs, and improve manufacturing. In this guide, we will highlight the key properties of PEI which make it an ideal choice in high-end engineering applications.
Polyetherimide - Wikipedia
Polyetherimide (PEI; branded as Ultem [1]) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK. When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range.
PEI Polymer: Understanding Properties, Synthesis, and …
What is PEI polymer? PEI polymer, also known as ULTEMTM plastic, is an amorphous thermoplastic characterized by its high mechanical strength and rigidity, sharing similar physical properties to polyarylsulfones.
Polyethyleneimine - an overview | ScienceDirect Topics
Polyethyleneimine (PEI) is a synthetic, water soluble, linear or branched polymer. It is widely used in gene delivery system due to the ability to build a complex with DNA and support the release of endosomal through “proton sponge effect.” It is also facilitating the intracellular transport into …
Polyethylenimine | Formula, Properties & Application
Polyethylenimine or PEI is a polymer that holds immense significance in a variety of scientific and industrial applications. It’s a unique class of polyamines, comprising of repeating units of ethyleneimine, thereby giving rise to its namesake.
Polyethylenimine: a very useful ionic polymer in the design of ...
2017年8月16日 · This review discusses the possible roles of polyethylenimine (PEI) in the design of improved immobilized biocatalysts from diverse perspectives. This includes their use to activate supports and immobilize enzymes via ion exchange, as well as to improve immobilized enzymes by coating with PEI.
Polyethyleneimine - an overview | ScienceDirect Topics
PEI is a linear or branched cationic polymer (Figure 6), available in different molecular weights (e.g., 700 Da, 2, 25, 50, 70, 800 kDa), that condenses DNA by electrostatic interactions and displays high transfection efficiency in vitro and in vivo.
Polyethyleneimine - an overview | ScienceDirect Topics
Polyethyleneimine (PEI) is a common polyamine polymer with repeating unit consisted of one primary amine functional groups (-NH2) and two carbon aliphatic groups (CH 2 -CH 2). making it a promising material for the CO 2 capture applications.
Polyethylenimine (PEI) - Polymers - Products - Polysciences, Inc.
Linear polyethylenimine (PEI) is a high-charge cationic polymer that readily binds highly anionic substrates. Industrially, linear PEI can improve the appearance of negatively charged dyes by modulating their properties and improving their adherence to surfaces.