Studies on graft copolymerization of 2-hydroxyethyl acrylate onto chitosan

Mun, Grigoriy A.; Nurkeeva, Zauresh S.; Dergunov, Sergey A.; Nam, Irina K.; Maimakov, Tauzhan P.; Shaikhutdinov, Erengaip; Lee, Sang Cheon; Park, Kinam

doi:10.1016/j.reactfunctpolym.2007.07.012

Cited by 73 publications

(37 citation statements)

References 28 publications

(31 reference statements)

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“…At 4.1 ppm appear the signals of the methylene protons of -CH 2 O-which are different that those that experimented etherification reactions [26] . The same signal has been observed by others authors [19,26] . The spectra did not exhibit signals due to protons -CH=CH-(5.3 ppm), this is evidence that the monomers reacted.…”

Section: Study Of the Structural Thermal Rheological And Film Propesupporting

confidence: 91%

“…The signal around 1 ppm is attributed to -CH 3 protons. The -CH and -CH 2 backbone protons resonated at 2.3 and between 1.5-1.9 respectively [19] . The signal at 2.5 ppm is attributed to the DMSO protons.…”

Section: Study Of the Structural Thermal Rheological And Film Propementioning

confidence: 99%

“…The polymerization of HEA onto chitosan using persulfate as initiator was performed in an aqueous solution. The polymerization rate was much more sensitive to the concentration of the HEA than to the concentration of the initiator [19] . Poly(HEA-co-coumaryl acrylate)s were prepared by free radical polymerization using dimethylformamide as solvent and AIBN as an initiator.…”

Section: Introductionmentioning

confidence: 99%

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Study of the structural, thermal, rheological and film properties of functional copolymers of hydroxyethyl acrylate and methyl methacrylate

Mejía

Murillo

2016

Polímeros

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SbstractNew functional polymers will be prepared using alkyd resins having high solid content (environmentally friendly) and comb-type structural morphology. Different copolymers of hydroxyethyl acrylate and methyl methacrylate (HEMMA) were synthesized by solution polymerization using azo-bis-(isobutyronitrile) (AIBN) as initiator and dimethylformamide as a solvent. The proportions utilized of AIBN were 0.5 (HEMMA1), 1.0 (HEMMA2), 1.5 (HEMMA3) and 2.0 wt. % (HEMMA4). The conversion percentage of the reaction was higher than 90%. The formation of the copolymers was evidenced by infrared analysis, hydroxyl value, and nuclear magnetic resonance. The intensity of OH group adsorption increased with the molecular weight and hydroxyl value. The polydispersity index was lower than 1.5. All copolymers exhibited a stable region on viscosity at a shear rate between 0.1 and 10 s -1 . The copolymers exhibited good thermal stability, flexibility, and adherence.

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Section: Study Of the Structural Thermal Rheological And Film Propesupporting

confidence: 91%

Section: Study Of the Structural Thermal Rheological And Film Propementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of the structural, thermal, rheological and film properties of functional copolymers of hydroxyethyl acrylate and methyl methacrylate

Mejía

Murillo

2016

Polímeros

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“…Several research works used IR with this purpose for keratin (Martínez et al 2003;Martínez et al 2008;Kavitha et al 2005), starch (Meshram et al 2009), modified starch (Cao et al 2002), chitosan (Mun et al 2008), carboxymehtyl chitosan (Joshi and Sinha, 2006), cellulose (Zampano et al 2009), www.intechopen.com…”

Section: Ir Of Cff-g-hema Copolymermentioning

confidence: 99%

Evaluation of Graft Copolymerization of Acrylic Monomers Onto Natural Polymers by Means Infrared Spectroscopy

Rivera‐Armenta¹,

Flores-Hernández²,

Angel-Aldana³

et al. 2012

Infrared Spectroscopy - Materials Science, Engineering and Technology

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“…Number of reports is available on graft polymerization of acrylonitrile, dimethylaminoethyl methacrylate, acrylamide, and vinyl pyrrolidone onto chitosan [19][20][21][22][23], hydroxyethyl acrylate (HEA) onto CS [24] and N-vinyl pyrrolidone with SA [25]. Many reports are available on grafting of methylmethacrylate, methylacrylate, butylacrylate, 2-acrylamido-2-methylpropane sulphonic acid and acrylic acid using potassium persulphate as an initiator [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Formulation and Characterization of Sodium Alginate g-Hydroxy Ethylacrylate Bio-Degradable Polymeric Beads: In Vitro Release Studies

et al. 2012

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Novel type of highly swollen beads were prepared by grafting 2-hydroxyethylacrylate onto biodegradable Sodium alginate (SA) via free-radical polymerization using potassium persulphate as an initiator and Triprolidine hydrochloride as a model drug. Evidence of grafting was obtained by fourier transform infrared spectroscopic technique. Morphological properties of the beads were studied by SEM analysis. Thermal properties and crystallinity of the beads were characterized using differential scanning calorimetry and thermogravimetric analysis and X-ray diffraction techniques, respectively. Dissolution experiments were performed to study the release profiles at 37°C in phosphate buffer solution (pH-7.4). Effect of monomer content, crosslinking agent and drug/polymer ratio on swelling properties and release profiles were also comparatively studied. A dissolution result concludes that drug release decreases with increasing crosslinker content. The highest release (96%) was obtained for the beads prepared with 0.5 mL crosslinking agent. Equilibrium swelling degree also supports the drug release profiles confirming SA-g-HEA beads showed better release profiles compare to plain SA beads.

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Studies on graft copolymerization of 2-hydroxyethyl acrylate onto chitosan

Cited by 73 publications

References 28 publications

Study of the structural, thermal, rheological and film properties of functional copolymers of hydroxyethyl acrylate and methyl methacrylate

Study of the structural, thermal, rheological and film properties of functional copolymers of hydroxyethyl acrylate and methyl methacrylate

Evaluation of Graft Copolymerization of Acrylic Monomers Onto Natural Polymers by Means Infrared Spectroscopy

Formulation and Characterization of Sodium Alginate g-Hydroxy Ethylacrylate Bio-Degradable Polymeric Beads: In Vitro Release Studies

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