Preparation of Graft Copolymers of Cellulose Derivatives and Their Use in Recovery Processes

2015 ◽  
pp. 356-385
Keyword(s):  
Graft Copolymers ◽  
Cellulose Derivatives ◽  
Recovery Processes

scholarly journals The preparation of graft copolymers of cellulose and cellulose derivatives using ATRP under homogeneous reaction conditions

2014 ◽  
Vol 43 (20) ◽  
pp. 7217-7235 ◽  
Author(s):  
Fanny Joubert ◽  
Osama M. Musa ◽  
David R. W. Hodgson ◽  
Neil R. Cameron
Keyword(s):  
Drug Delivery ◽  
Graft Copolymers ◽  
Cellulose Derivatives ◽  
Atom Transfer ◽  
Homogeneous Reaction ◽  
Reaction Conditions ◽  
Novel Materials ◽  
Radical Polymerisation

Atom transfer radical polymerisation (ATRP) is used to modify cellulose and cellulose derivatives under homogeneous conditions, yielding novel materials for application in areas such as drug delivery.

Cellulose derivatives and graft copolymers as blocks for functional materials

2013 ◽  
Vol 62 (3) ◽  
pp. 338-344 ◽  
Author(s):  
Hongliang Kang ◽  
Ruigang Liu ◽  
Yong Huang
Keyword(s):  
Graft Copolymers ◽  
Functional Materials ◽  
Cellulose Derivatives

Ultra-thin layers of phosphorylated cellulose derivatives on metal surfaces

2002 ◽  
Vol 177 (1) ◽  
pp. 97-110 ◽  
Author(s):  
Evelin Jaehne ◽  
Thomas Kowalik ◽  
Hans-Juergen P. Adler ◽  
Andreas Plagge ◽  
Martin Stratmann
Keyword(s):  
Metal Surfaces ◽  
Thin Layers ◽  
Cellulose Derivatives

How to Evaluate Clinically Relevant Literature: Five Simple Rules for the Practicing Clinician in Stroke Neurorehabilitation

2020 ◽  
Author(s):  
Jonathan Sanching Tsay ◽  
Carolee Winstein
Keyword(s):  
Clinical Decision Making ◽  
Relevant Literature ◽  
Clinical Decision ◽  
Balance Sheets ◽  
Neural Connections ◽  
Recovery Processes ◽  
Immediate Recovery ◽  
Simple Rules ◽  
Busy Clinician ◽  
New Generation

Neurorehabilitation relies on core principles of neuroplasticity to activate and engage latent neural connections, promote detour circuits, and reverse impairments. Clinical interventions incorporating these principles have been shown to promote recovery while demoting compensation. However, many clinicians struggle to find evidence for these principles in our growing but nascent body of literature. Regulatory bodies and organizational balance sheets further discourage evidence-based, methodical, time-intensive, and efficacious interventions because practical needs often outweigh and dominate clinical decision making. Modern neurorehabilitation practices that result from these pressures favor strategies that encourage compensation over those that promote recovery. With a focus on helping the busy clinician evaluate the rapidly growing literature, we put forth five simple rules that direct clinicians toward intervention studies that value more enduring but slower biological recovery processes over the more alluring practical and immediate “recovery” mantra. Filtering emerging literature through this critical lens has the potential to change practice and lead to more durable long-term outcomes. This perspective is meant to serve a new generation of mechanistically minded clinicians, students, and trainees poised to not only advance our field but to also erect policy changes that promote recovery-based care of stroke survivors.

Analytical Study of Irradiated Cellulose Derivatives

2013 ◽  
Vol 9 (3) ◽  
pp. 252-260
Author(s):  
M. Stawny ◽  
K. Dettlaff ◽  
B. Marciniec ◽  
E. Jaroszkiewicz ◽  
B. Czajka ◽  
...  
Keyword(s):  
Analytical Study ◽  
Cellulose Derivatives

Preparation of graft copolymers by the reaction of polymeric acyl chlorides with monohydroxy-terminated polymers: An introductory study

1988 ◽  
Vol 53 (8) ◽  
pp. 1735-1744 ◽  
Author(s):  
Jitka Horská ◽  
Jaroslav Stejskal ◽  
Pavel Kratochvíl ◽  
Aubrey D. Jenkins ◽  
Eugenia Tsartolia ◽  
...  
Keyword(s):  
Light Scattering ◽  
Chemical Composition ◽  
Statistical Model ◽  
Graft Copolymers ◽  
Coupling Reaction ◽  
Molecular Characteristics ◽  
Gel Formation ◽  
Acyl Chlorides ◽  
Molecular Weights

An attempt was made to prepare well-defined graft copolymers by the coupling reaction between acyl chloride groups located along the backbone chain and monohydroxy-terminated grafts prepared separately. The molecular weights and the parameters of heterogeneity in chemical composition of the products were determined by light scattering and osmometry. The determination of molecular characteristics revealed that the degree of grafting was low. The results therefore could not be confronted with a statistical model at this stage. The problems encountered in the synthesis, e.g., gel formation, and the data relating to the soluble products are discussed.

Association of Graft Copolymers of Alkyl Methacrylates with α-Methyl-ω-hydroxy-poly(oxyethylene) ethacrylates

1995 ◽  
Vol 60 (11) ◽  
pp. 1971-1985 ◽  
Author(s):  
Čestmír Koňák ◽  
Zdeněk Tuzar ◽  
Pavla Kopečková ◽  
Joseph D. Andrade ◽  
Jindřich Kopeček
Keyword(s):  
Light Scattering ◽  
Graft Copolymers ◽  
Water Solution ◽  
Pure Water ◽  
Solution Properties ◽  
Monomer Composition ◽  
Special Procedure ◽  
Methyl Cellosolve ◽  
Hexyl Methacrylate ◽  
Alkyl Methacrylates

Solution properties of the statistical copolymers of alkyl methacrylates (AMA) with α-methyl-ω-hydroxy-poly(oxyethylene) methacrylates (MPOEMA) (nonionic polysoaps) were studied using static and dynamic ligh scattering as a function of monomer composition and concentration in aqueous and methyl cellosolve solutions. The solubility of the copolymers in water was found to be dependent on molar contant of AMA. While copolymers with low content of hexyl methacrylate (HMA) (0 and 20 mole %) were directly soluble in water, forming true solutions with a low content of large swollen aggregates, copolymers with a higher content of HMA or lauryl methacrylate (LMA) were not directly dispersable in water. A special procedure, the stepwise dialysis from methyl cellosolve solutions against water, had to be used to prepare them in the pseudomicellar form. The copolymers were directly soluble in methyl cellosolve and its water solution containing up to 60 vol.% of water. Nevertheless, the light scattering experiments were dominated by light scattering of swollen particles of aggregated copolymer molecules. The copolymers were not soluble in the mixtures containing 70-100 vol.% of water. Paramaters of aggregates in the mixture with 60 vol.% of water and in pure water were found to be very similar.

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