Variations in the diallyldimethylammonium chloride (DADMAC) polymers architectures: PEG/DADMAC blocks and partially quaternarized polymers

Tirelli, Nicola; Hunkeler, David

doi:10.1002/(sici)1521-3935(19990501)200:5<1068::aid-macp1068>3.0.co;2-0

Cited by 12 publications

(14 citation statements)

References 18 publications

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“…The peak at δ 182.2 ppm confirms the presence of amide carbonyl carbons (g). A broad peak at δ 27.9 ppm is allocated to methylene carbon (d), while the low intensity unresolved broad peak at δ 40.9 ppm is assigned to methine carbon (c), which is following the sequence and values reported by various authors 35–37. The methylene on carbon (b), α‐carbon to DADMAC nitrogen which is buried under the complex structure of guar gum, can be assigned to the unresolved but sharp peak at δ 71.1 ppm which is consistent with literature values 34, 38, 39…”

Section: Resultssupporting

confidence: 87%

“…This assignment of protons signals of the grafted chain is in line with the literature values 33. Guar gum signals could not be identified clearly in the complex spectrum; however, the sequence of signals and their presence is very similar to what is reported in the literature 2, 35. Crescenzi et al2 reported that the last peak in the 1 H‐NMR of guar gum comes at δ 5.02 ppm and nothing was reported further downfield.…”

Section: Resultssupporting

confidence: 77%

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Increasing pneumococcal vaccination for immunosuppressed patients: A cluster quality improvement trial

Desai¹,

Lü²,

Szent-Gyorgyi³

et al. 2012

Arthritis & Rheumatism

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Objective. Pneumococcal vaccination is important for patients taking immunosuppressive medications, but prior studies suggest that most patients do not undergo vaccination. The aim of this study was to evaluate the effects of a point-of-care paper reminder form as a quality improvement (QI) strategy to increase the numbers of immunosuppressed patients being kept up-to-date with pneumococcal vaccination in a rheumatology practice.Methods. Selected rheumatologists at 5 ambulatory practice sites received a point-of-care paper reminder form to be applied to patients who were not up-to-date with pneumococcal vaccination. Interrupted time-series analyses were used to measure the effect of the intervention on the pneumococcal vaccination rates among patients, comparing the rates in the intervention group with those in a control group of rheumatologists who did not receive the intervention. Adjusted Cox proportional hazards models were examined to identify independent predictors of being up-to-date with pneumococcal vaccination.Results. We evaluated a total of 3,717 patients (66.0% with rheumatoid arthritis) who were taking immunosuppressive medications (74.1% women, mean age 53.7 years). Rheumatologists who received the intervention had a significant increase in the rate of patients who were up-to-date with pneumococcal vaccination, from 67.6% to 80.0% (P ‫؍‬ 0.006), in the time period following the intervention, compared to a rate that remained stable, from 52.3% to 52.0% (P ‫؍‬ 0.90), among patients in the nonintervention control group during this same time period. In regression models, positive predictors of being up-to-date with pneumococcal vaccination at the patient level included the following: having received the intervention (hazard ratio Conclusion. A QI strategy involving a simple point-of-care paper reminder form significantly increased the rate of being up-to-date with pneumococcal vaccination among patients receiving immunosuppressive medications in our rheumatology practices over a 6-month period.[

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Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 77%

Increasing pneumococcal vaccination for immunosuppressed patients: A cluster quality improvement trial

Desai¹,

Lü²,

Szent-Gyorgyi³

et al. 2012

Arthritis & Rheumatism

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“…The degree of grafting was a strong function of the radiation dose, dose rate, and polyelectrolyte concentration. New DADMAC and polyethylene glycol containing block copolymers by condensation, together with thermal and redox radical techniques, were obtained 32. One advantage is the randomly reduced charge on the polymer chain.…”

Section: Current Status Of the Fieldmentioning

confidence: 99%

Cyclopolymerization

Butler¹

2000

J. Polym. Sci. A Polym. Chem.

118

116

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The background and summary of the events that led to the discovery and confirmation of an unusual and unexpected mode of polymerization of certain vinyl monomers is presented. Originally, the process was described as an alternating intra‐intermolecular chain propagation mechanism. For convenience and because cyclic structures are introduced into the polymer chain, the term cyclopolymerization has been adopted. Early attempts to determine the relationship of cyclopolymerization to stereochemical control and to ladder polymer formation are reviewed. Also, it is pointed out that within 10 years of the introduction of the cyclopolymerization concept, worldwide commercialization of certain cyclopolymers and cyclocopolymers had begun. The extent of the research activity in this area of chemistry and its relationship to commercialization are emphasized. Two areas of research activity that are featured are chirality induction into well‐known polymers and synthesis of conjugated polymers via cyclopolymerization. Both areas are discussed, and suitable examples are included. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 3451–3461, 2000

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“…A wide range of polymer-clay composite has been produced and used for water treatment (Sebastian, et al, 2014;Gupta, et al, 2016), dye adsorption (El Haddad, et al, 2012; Patil and Shrivastava, 2015) etc. The synthesis of ionic copolymers has been gaining significant interest among researchers (Tirelli and Hunkeler, 1999). Diallyldimethylammonium chloride (DADMAC) is one of the water soluble cationic monomer that has wide range of applications in water treatment, medicine, electrical switches, etc.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of locust bean gum-based terpolymer bentonite composite: evaluation for indigo carmine adsorption

Vishalakshi

Zauro

2017

IJAC

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A terpolymer gel compositeis made up of locust bean gum (LBG), diallyldimethylammonium chloride (DADMAC), 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) and bentonite (BNT) was prepared using methylenebisacrylamide (MBA) as crosslinker via microwave irradiation and characterized using FTIR, TGA and SEM techniques. Swelling behavior of the composite was studied under different pH conditions. The composite was also evaluated for adsorption of anionic dye ‘Indigo Carmine’ (IC). The behaviour of the composite was compared with the terpolymer gel without the clay component. The gel showed remarkably higher swelling under neutral pH compared to the composite. The adsorption capacity of the terpolymer gel without clay for Indigo Carmine dyeis also found to be higher (17.36 mg/g) compared to the clay composite (11.99 mg/g). The adsorption data were subjected to three different isotherm models namely; Freundlich, Langmuir and Temkin and were observed to be explained best by Freundlich model. The adsorption of indigo Carmine on the terpolymer gel and the composite is observed to be a second order kinetic process.

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Variations in the diallyldimethylammonium chloride (DADMAC) polymers architectures: PEG/DADMAC blocks and partially quaternarized polymers

Cited by 12 publications

References 18 publications

Increasing pneumococcal vaccination for immunosuppressed patients: A cluster quality improvement trial

Increasing pneumococcal vaccination for immunosuppressed patients: A cluster quality improvement trial

Cyclopolymerization

Synthesis of locust bean gum-based terpolymer bentonite composite: evaluation for indigo carmine adsorption

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