Results 241 to 250 of about 35,820 (275)
Some of the next articles are maybe not open access.
Polyethylenimine‐Based Nanogels for Biomedical Applications
Macromolecular Bioscience, 2019AbstractNanogels (NGs) are 3‐dimensional (3D) networks composed of hydrophilic or amphiphilic polymer chains, allowing for effective and homogeneous encapsulation of drugs, genes, or imaging agents for biomedical applications. Polyethylenimine (PEI), possessing abundant positively charged amine groups, is an ideal platform for the development of NGs. A
Yu Zou +3 more
openaire +2 more sources
Martini coarse‐grained model for polyethylenimine
Journal of Computational Chemistry, 2018As a polycation with diverse applications in biomedical and environmental engineering, polyethylenimine (PEI) can be synthesized with varying degrees of branching, polymerization, and can exist in different protonation states. There have been some interests in molecular modeling of PEI at all‐atom or coarse‐grained (CG) levels, but present CG models ...
Subhamoy Mahajan, Tian Tang
openaire +2 more sources
The thermal degradation of branched polyethylenimine
Polymer Science U.S.S.R., 1975Abstract The kinetics of thermal degradation of branched polyethylenimines (PEI) of various molecular weights were investigated in air and in an inert atmosphere. The degradation reaction was of first order for all PEI samples in argon. Activation energy, E a , for PEI with M = 3000, 20,000 and 40,000 was 31·1;32·1 and 31·6 kcal/mole respectively;
V.V. Nedel'ko +3 more
openaire +1 more source
Compact polyethylenimine-complexed mRNA vaccines
Nature NanotechnologyHere we describe formulations comprising individual, polymer-complexed self-amplifying RNA (saRNA) molecules, designed for vaccination against infectious diseases and other prophylactic and therapeutic applications. When exposed to a large excess of the cationic polymer polyethylenimine (PEI), the single saRNA molecules in solution reorganize from an ...
Jorge Moreno Herrero +11 more
openaire +4 more sources
Aggregation of microcrystalline cellulose with polyethylenimine
Colloid and Polymer Science, 1974Interactions between suspended microcrystalline cellulose (Avicel) and polyethylenimine (PEI) with various molecular weights were examined by observing sedimentation, electrophoresis and adsorption. The experimental results are consistent with the view that both bridging and electrical stabilization play roles in the aggregation and sedimentation of ...
B. Alince, A. A. Robertson
openaire +1 more source
Polyethylenimine-Containing Cotton Fabrics
Journal of Macromolecular Science: Part A - Chemistry, 1975Abstract Polyethylenimine-containing cotton fabrics were prepared by reaction of 1-epoxyethyl-3, 4-epoxycyclohexane with cotton fabric impregnated with polyethylenimine of a moderately high molecular weight. Fabrics with a high unremovable polyethylenimine content and with a different degree of cross-linking were obtained.
Yair Avny, Ury Schnieder
openaire +1 more source
Cancer Nanomedicine Based on Polyethylenimine-Mediated Multifunctional Nanosystems
Progress in Materials Science, 2022Xiangyang Shi, Mingwu Shen, Jingchao Li
exaly