(PDF) Graft Copolymerization of Pectin with
The grafted copolymer was characterized by Fourier transform infrared spectroscopy (FT-IR), organic elemental analysis, differential
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Graft Copolymerization of Pectin with Polyacrylamide
The grafted copolymer was characterized by Fourier transform infrared spectroscopy (FT-IR), organic elemental analysis, differential scanning calorimetry (DSC) and
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Graft Copolymerization of Pectin with Polyacrylamide
In the present study, an attempt has been made to modify pectin by grafting polyacrylamide using ammonium ceric sulphate as initiator. The effect of various variables like initiator
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Graft copolymerization of pectin with polyacrylamide
tin are scanty[24,25], specially grafting of polyacrylamide on Graft copolymerization is a technique for modifying the pectin has not been reported. Therefore, in the current study, chemical and
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Graft Copolymerization an overview ScienceDirect Topics
Graft copolymerization of vinyl monomers onto natural polysaccharides (starch, cellulose, guar gum, chitosan, pectin, etc.) is the most promising technique given its functionalization of those
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Development of pH sensitive polyacrylamide grafted
In the present study an attempt was made to graft polyacrylamide on pectin. The grafted polymer was characterized by FTIR spectroscopy, differential scanning calorimetry and X-ray diffraction. Rheological property of pectin solution was compared with the product solution. The grafted polymer was cross-linked with varying amount of glutaraldehyde.
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A Review on the Modification of Polysaccharide Through
Polymeric flocculent has been developed by graft copolymerization of acrylamide (AAm) with acrylic acid (AAc) using gamma irradiation technique. The grafted copolymer (PAAm/AAc) was characterized using fourier-transform infrared spectroscopy (FTIR), and thermo-gravimetric analysis (TGA).
Get PriceGraft polymerization of acrylamide on chitosan
The graft copolymerization of acrylamide with chitosan using ammonium persulfate as an initiator has also been reported. The studies showed that the copolymer films show better mechanical...
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Preparation of a new dry strength agent via graft
The results obtained through element analysis showed that the N, C, and H contents of CMS were 0.35%, 42.84%, and 6.24%, respectively, while they became 6.65%, 46.56%, and 6.45%, respectively, after the graft copolymerization. The obvious growth in the N content indicated the presence of nitrogenous compounds (AM) in the modified CMS.
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Block and Graft Copolymerization by Controlled/Living
Graft copolymers also exhibit good phase separation and are used for a variety of applications, such as impact-resistant plastics, thermoplastic elastomers, compatibilizers and polymeric emulsifers. Because of their branched structure they generally have also lower melt viscosities, which is advantageous for processing.
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Effect of naturally occurring proteins on graft
The graft copolymerization was allowed to proceed for 2 h under a N 2 atmosphere at 30 °C and a stirring rate of 400 rpm. After the reaction was completed, the unreacted monomer was removed by...
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Polymers Free Full-Text Preparation of Poly(acrylic acid
Graft copolymerization is one of the most common methods for modification, in which the other polymer can be chemically bonded to the polymer backbone. From this method, the free radicals on the main chain are generated. The monomer is then added and undergoes polymerization to form a grafted copolymer.
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Surface Graft Copolymerization of Viologens on Polymeric
The graft copolymerization was carried out by placing the plasma pretreated polymeric substrate in contact with VBC under UV irradiation. The effects of plasma pretreatment time, UV graft copolymerization time, solvent, and monomer concentration on the VBC graft copolymer concentration on the films were studied.
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Graft Copolymers Matyjaszewski Polymer Group
graft copolymer with a poly(vinyl chloride) backbone were prepared by two approaches, one was preparation of a macroinitiator by copolymerization of vinyl chloride with a monomer containing an atrp initiating group, vinyl chloroacetate.(7) the other was to graft from inherent structural defects in poly(vinyl chloride.(8) either approach can be
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Surface Modification of PET Fabric by Graft
Graft copolymerization of acrylic acid (AA) onto Poly(ethylene terephthalate) (PET) fabrics with the aid of benzoyl peroxide was carried out. The effect of polymerization parameters on the graft yield was studied. Percent grafting was enhanced significantly by increasing benzoyl peroxide (BP) concentrations up to 3.84 g/lit and then decreased upon further
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Graft Copolymerization Scientific.Net
Abstract: Graft copolymer of Amylopectin and PMMA was synthesized by atom transfer radical polymerization (ATRP) method. The hydroxyl groups of amylopectin partially substituted with tert-butyl a-bromoisobutyrate to form tert-butyl a-bromoisobutyrate (TBBiB ) groups. This compound is known as an efficient macro-initiator for ATRP process.
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Block and Graft Copolymerization by Controlled/Living
Graft copolymers also exhibit good phase separation and are used for a variety of applications, such as impact-resistant plastics, thermoplastic elastomers, compatibilizers and polymeric emulsifers. Because of their branched structure they generally have also lower melt viscosities, which is advantageous for processing.
Get PriceThermal and rheological properties of cellulose-graft
The graft copolymerization effect is evaluated by the study of the thermal and rheological properties of the copolymers. FTIR and elemental analysis results show that the amide groups of PAM successfully graft onto the cellulose backbone and the graft ratio of the cellulose- g -PAM is increased with the increase in AM content.
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Preparation and characterization of lignin graft copolymer
The graft co-polymerization reaction was conducted in numerous batches with the aim of discovering the optimum conditions for the reaction. The effects of the dosages of potassium persulphate and AMPS, reaction temperature, and time were studied such that the optimum reaction conditions could be estimated. Effect of initiator dosage
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Introduction to Polyacrylamide Gels Bio-Rad
Polyacrylamide gels are characterized by two parameters: total monomer concentration (%T, in g/100 ml) and weight percentage of crosslinker (%C). By varying these two parameters, the pore size of the gel can be
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Surface Modification of Poly(tetrafluoroethylene) Film by
The doping−undoping (protonation−deprotonation) behavior of the surface graft copolymerized aniline polymers was similar to that of the aniline homopolymer or polyaniline
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Radiation induced graft copolymerization of acrylamide
The graft copolymer poly (3-hydroxybutyrate)-g- polyacrylamide [P (HB-g-AAm)] was synthesized by radiation induced graft copolymerization of acrylamide onto poly (3-hydroxybutyrate). The study was conducted by the simultaneous irradiation method. The structure of [P (HB-g-AAm)] was identified by Fourier Transform Infrared (FTIR) spectroscopy.
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