Preparation and characterization of graft copolymerization of ethyl acrylate onto hydroxypropyl methylcellulose in aqueous medium

Wang, Lili; Xu, Yangsheng

doi:10.1007/s10570-005-9043-y

Cited by 37 publications

(24 citation statements)

References 25 publications

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“…If anionic functional groups, such as carboxylate or sulfate groups, are introduced onto the chitin NF surface, the surface will have a negative charge under basic conditions, resulting in stable dispersion similar to that of TEMPO-oxidized chitin nanocrystals [50]. The grafting reaction was carried out with potassium persulfate as an initiator, which allows facile radical polymerization in aqueous media [52][53][54]. The process is based on a grafting-from process, where radicals are formed along the chitin polymer backbone followed by a free radical polymerization of acrylic acid monomer.…”

Section: Preparation Of Surface N-halamine Chitin Nanofibersmentioning

confidence: 99%

Chitin and Chitosan Nanofibers: Preparation and Chemical Modifications

2014

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Chitin nanofibers are prepared from the exoskeletons of crabs and prawns, squid pens and mushrooms by a simple mechanical treatment after a series of purification steps. The nanofibers have fine nanofiber networks with a uniform width of approximately 10 nm. The method used for chitin-nanofiber isolation is also successfully applied to the cell walls of mushrooms. Commercial chitin and chitosan powders are also easily converted into nanofibers by mechanical treatment, since these powders consist of nanofiber aggregates. Grinders and high-pressure waterjet systems are effective for disintegrating chitin into nanofibers. Acidic conditions are the key factor to facilitate mechanical fibrillation. Surface modification is an effective way to change the surface property and to endow nanofiber surface with other properties. Several modifications to the chitin NF surface are achieved,

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Section: Preparation Of Surface N-halamine Chitin Nanofibersmentioning

confidence: 99%

Chitin and Chitosan Nanofibers: Preparation and Chemical Modifications

2014

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“…Paper-PEG membranes were prepared by interpenetrating polymer network (IPN) technique (Sabaa and Mokhtar, 2002;Wang and Xu, 2006). Monomer/initiator solution was prepared by adding 4.3 mg of methylenebisacrylamide, 3.3 mg of potassium persulfate, 0.5 g of poly(ethylene glycol) methyl ether methacrylate solution, 68mg of isopropylacrylamide and 1.5 mL of ultra-pure water into a 500 mL beaker.…”

Section: Preparation Of Peg Grafted Filter Papers and Sem Characterizmentioning

confidence: 99%

Paper‐PEG‐based membranes for hydrophobic interaction chromatography: Purification of monoclonal antibody

Chen

Pelton

et al. 2007

Biotech & Bioengineering

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This article discusses the preparation of novel Paper-PEG interpenetrating polymer network-based membranes as inexpensive alternative to currently available adsorptive membranes. The Paper-PEG membranes were developed for carrying out hydrophobic interaction membrane chromatography (HIMC). PEG is normally very hydrophilic but can undergo phase separation and become hydrophobic in the presence of high antichaotropic salt concentrations. Two variants of the Paper-PEG membranes, Paper-PEG 1 and Paper-PEG 2 were prepared by grafting different amounts of the polymer on filter paper and these were tested for their hydraulic properties and antibody binding capacity. The better of the two membranes (Paper-PEG 1) was then used for purifying the monoclonal antibody hIgG1-CD4 from simulated mammalian cell culture supernatant. The processing conditions required for purification were systematically optimized. The dynamic antibody binding capacity of the Paper-PEG 1 membrane was about 9 mg/mL of bed volume. A single step membrane chromatographic process using Paper-PEG 1 membrane gave high monoclonal antibody purity and recovery. The hydraulic permeability of the paper-based membrane was high and was maintained even after many runs, indicating that membrane fouling was negligible and the membrane was largely incompressible.

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“…The XRD pattern of natural cellulose [ Figure 8(c)] shows that it, as well as all other native polymeric substances [20], has a partial crystalline structure. There were two obvious sharp peaks at 16.03° and 22.36°, and two minor sharp peaks at 29.36° and 34.94°.…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Grafting Diethylene Triamine onto Bagasse with Ammonium Ceric Nitrate as an Initiator

ZHU¹,

Kong²,

Cao³

et al. 2015

JRST

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Bagasse cellulose was grafted with diethylenetriamine to prepare a copolymer. Ammonium ceric nitrate was chosen as the initiator. Considering the optimum zeta potential, conditions including initiator concentration, the mass ratio of monomer to cellulose, preparation temperature and time are discussed. In addition, the graft copolymers were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectra (FT-IR), and X-ray diffraction analysis (XRD). The grafting bagasse cellulose has the advantage of being biodegradable and has low cost of raw materials. Its absorbent properties are an attractive alternative for wastewater treatment and avoids environmental pollution.

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Preparation and characterization of graft copolymerization of ethyl acrylate onto hydroxypropyl methylcellulose in aqueous medium

Cited by 37 publications

References 25 publications

Chitin and Chitosan Nanofibers: Preparation and Chemical Modifications

Chitin and Chitosan Nanofibers: Preparation and Chemical Modifications

Paper‐PEG‐based membranes for hydrophobic interaction chromatography: Purification of monoclonal antibody

Grafting Diethylene Triamine onto Bagasse with Ammonium Ceric Nitrate as an Initiator

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