ULTRA Loaded Resins Based on the Cross-Linking of Linear Poly(ethylene imine). Improving the Atom Economy of Polymer-Supported Chemistry J.R. gratefully acknowledges support from Prof. G. Jung and Prof. M. E. Maier, Tübingen, the Strukturfonds of the University of Tübingen, DFG project “Reactive Intermediates in Polymeric Gels” (Ra 895/2), the Fonds der Chemischen Industrie, and from the DFG graduate college “Chemistry in Interphases” (project 6, Rademann), from which M.B. receives a stipend. We are grateful to Rainer Fischer, Elke Gesele, Dr. Klaus Eichele, and Nicole Sessler for analytical and technical support. We thank Personal Chemistry GmbH, Constance, Germany, for lending us a microwave synthesizer.

2002 ◽  
Vol 41 (16) ◽  
pp. 2975 ◽  
Author(s):  
Jörg Rademann ◽  
Michael Barth
Keyword(s):  
Reactive Intermediates ◽  
Technical Support ◽  
Cross Linking ◽  
Atom Economy ◽  
Ethylene Imine ◽  
Linear Poly ◽  
Polymer Supported ◽  
The Cross ◽  
Poly Ethylene ◽  
The University

Linear Poly(ethylene imine)-Based Hydrogels for Effective Binding and Release of DNA

2014 ◽  
Vol 15 (4) ◽  
pp. 1124-1131 ◽  
Author(s):  
Christoph Englert ◽  
Lutz Tauhardt ◽  
Matthias Hartlieb ◽  
Kristian Kempe ◽  
Michael Gottschaldt ◽  
...  
Keyword(s):  
Ethylene Imine ◽  
Linear Poly ◽  
Poly Ethylene

scholarly journals Comparison of Linear Poly Ethylene Imine (LPEI) and Poly L-Lysine (PLL) in Fabrication of CHOK1 Cell-Loaded Multilayer Alginate Microcapsules

2020 ◽  
Vol 10 (2) ◽  
pp. 290-296
Author(s):  
Fariba Hajifathaliha ◽  
Arash Mahboubi ◽  
Elham Mohit ◽  
Noushin Bolourchian ◽  
Vahid Khalaj ◽  
...  
Keyword(s):  
Cell Viability ◽  
Cell Survival ◽  
Metabolic Activity ◽  
Encapsulation Efficiency ◽  
Cell Encapsulation ◽  
High Price ◽  
Ethylene Imine ◽  
Linear Poly ◽  
Cellular Metabolic Activity ◽  
Poly Ethylene

Purpose: Poly l-lysine (PLL) has been introduced as a strengthening covering layer for alginate microcapsules which are the most convenient way for cell encapsulation. Some disadvantages of PLL such as high price and low biocompatibility have prompted scientists to find better alternatives. Linear poly ethylene imine (LPEI), thanks to its highly similar structure to PLL, could be considered as a proper cost-effective alternative. In this study LPEI and PLL were compared as covering layers of cell-loaded alginate-LPEI-alginate (cALA) and alginate-PLL-alginate (cAPA) microcapsules. Methods: In addition to the physico-mechanical properties, the encapsulation efficiency, cell survival post encapsulation, cell viability, and cellular metabolic activity within the microcapsules were evaluated using trypan blue, live/dead cell staining, and MTT test, respectively. Results: Physico-mechanical evaluation of the microcapsules revealed that the cell microencapsulation process did not affect their shape, size, and mechanical stability. Although the encapsulation efficiency for cALA and cAPA was not different (P>0.05), cell survival post encapsulation was higher in cALA than in cAPA (P<0.05) which could be the reason for the higher cell viability and also cellular metabolic activity within these microcapsules in comparison to cAPA. Conclusion: Here, based on these results, ALA could be introduced as a preferable alternative to APA for cell encapsulation.

Dextran-graft-linear poly(ethylene imine)s for gene delivery: Importance of the linking strategy

2014 ◽  
Vol 113 ◽  
pp. 597-606 ◽  
Author(s):  
Sofia Ochrimenko ◽  
Antje Vollrath ◽  
Lutz Tauhardt ◽  
Kristian Kempe ◽  
Stephanie Schubert ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Ethylene Imine ◽  
Linear Poly ◽  
Poly Ethylene

Calcium phosphate mineralization with linear poly(ethylene imine): a time-resolved study

2011 ◽  
Vol 289 (8) ◽  
pp. 881-888 ◽  
Author(s):  
Andriy Shkilnyy ◽  
Stefanie Schöne ◽  
Claudia Rumplasch ◽  
Annett Uhlmann ◽  
Annett Hedderich ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Ethylene Imine ◽  
Time Resolved ◽  
Phosphate Mineralization ◽  
Linear Poly ◽  
Poly Ethylene

Linear poly(ethylene imine)s: true molar masses, solution properties and conformation

2017 ◽  
Vol 8 (46) ◽  
pp. 7169-7179 ◽  
Author(s):  
Igor Perevyazko ◽  
Alexander S. Gubarev ◽  
Lutz Tauhardt ◽  
Anatoly Dobrodumov ◽  
Georges M. Pavlov ◽  
...  
Keyword(s):  
Gene Therapy ◽  
Pivotal Role ◽  
Polymer Chemistry ◽  
Solution Properties ◽  
Ethylene Imine ◽  
Linear Poly ◽  
Poly Ethylene

In-depth characterization of pharmaceutically relevant polymers plays a pivotal role in many areas, including nanoscience, gene therapy, analytical and polymer chemistry etc.

Preparation and physical characterization of strongly swellable oligo(oxyethylene) lignin hydrogels

Holzforschung ◽  
2011 ◽  
Vol 65 (3) ◽  
Author(s):  
Lars Passauer ◽  
Klaus Fischer ◽  
Falk Liebner
Keyword(s):  
Dynamic Viscosity ◽  
Loss Modulus ◽  
Gelation Time ◽  
Rheological Behaviour ◽  
Diglycidyl Ether ◽  
Cross Linking ◽  
Available Water Content ◽  
The Cross ◽  
Poly Ethylene ◽  
Tan Δ

Abstract Highly swellable, mechanically stable hydrogels were obtained by cross-linking different technical lignins with poly(ethylene) glycol diglycidyl ether (PEGDGE). The gelation time and the properties of the products can be controlled by the extent of pre-oxidation and the cross-linking conditions, namely the dynamic viscosity η*, storage and loss modulus (G′; G″), and loss factor tan δ. The highest free swelling capacities (FSC) of up to 50 g water per g xerogel were obtained from pre-oxidized pine kraft lignin Indulin® AT and spruce organosolv lignin. Dynamic rheological measurements confirmed the typical rheological behaviour of gel structures, i.e. a linear decrease of dynamic viscosity about three orders of magnitude within a frequency range of 0.08 and 20 s-1. The results furthermore revealed a good mechanical sturdiness of the cross-linked lignin hydrogels. Sandy soils supplemented with small quantities of the hydrogels were found to feature a significantly increased plant-available water content. Based on the observed effects, oligo(oxyethylene) lignins are promising materials with respect to a prolonged water retention in soils.

Charge Reversal of Sulfate Latex Particles by Adsorbed Linear Poly(ethylene imine) Probed by Multiparticle Colloidal Probe Technique

2011 ◽  
Vol 115 (29) ◽  
pp. 9098-9105 ◽  
Author(s):  
Marco Finessi ◽  
Prashant Sinha ◽  
István Szilágyi ◽  
Ionel Popa ◽  
Plinio Maroni ◽  
...  
Keyword(s):  
Ethylene Imine ◽  
Charge Reversal ◽  
Latex Particles ◽  
Probe Technique ◽  
Colloidal Probe ◽  
Linear Poly ◽  
Poly Ethylene

Linear Poly(ethylene imine)s by Acidic Hydrolysis of Poly(2-oxazoline)s: Kinetic Screening, Thermal Properties, and Temperature-Induced Solubility Transitions

2010 ◽  
Vol 43 (2) ◽  
pp. 927-933 ◽  
Author(s):  
Hanneke M. L. Lambermont-Thijs ◽  
Friso S. van der Woerdt ◽  
Anja Baumgaertel ◽  
Lies Bonami ◽  
Filip E. Du Prez ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Ethylene Imine ◽  
Acidic Hydrolysis ◽  
Linear Poly ◽  
Poly Ethylene ◽  
Hydrolysis Of

In situ crosslinked PVA–PEI polymer binder for long-cycle silicon anodes in Li-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 68371-68378 ◽  
Author(s):  
Zhen Liu ◽  
Shaojie Han ◽  
Chong Xu ◽  
Yuwen Luo ◽  
Na Peng ◽  
...  
Keyword(s):  
Polymer Binder ◽  
Water Soluble ◽  
Silicon Anode ◽  
Cross Linking ◽  
Li Ion Batteries ◽  
Ethylene Imine ◽  
Silicon Anodes ◽  
Li Ion ◽  
Poly Ethylene

A novel polymer binder, synthesized via in situ thermal cross-linking of water-soluble polyvinyl alcohol (PVA) and poly(ethylene imine) (PEI) precursor, is applied as a functional network binder to enhance the electrochemical performance of a silicon anode.

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