Radiation Graft Co-polymerization of Methacrylic Acid (MAA) onto Sago Starch Films

Senna, Magdy M.; Zaman, Khairul; Ghazali, Zulkafli; Hashim, Kamaruddin

doi:10.1081/pte-200065268

Cited by 9 publications

(10 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Senna et al reported an increase in the intensity of the absorption band due to CO stretching, confirming the presence of grafted chains of MAA in the graft copolymer …”

Section: Characterization Of Sago Starch Graft Copolymersmentioning

confidence: 84%

“…Kaur et al observed an increase in the crystalline nature of SG on grafting with AA . Similarly, Singh et al reported enhancement in crystallinity of sago starch on grafting with Acrylamide . While the same researcher, Kaur et al on studying sago starch grafted Acrylamide (SG‐g‐AAm) reported a change from crystalline to amorphous nature of the base polymer .…”

Section: Characterization Of Sago Starch Graft Copolymersmentioning

confidence: 96%

“…SG films having 66% grafting of MAA showed highest tensile strength. It was noticed that radiation grafting prevents the retrogradation process of SG leading to lowering of its gelatinization temperature …”

Section: Graft Copolymerization Onto Sago Starchmentioning

confidence: 99%

“…Using Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC), Pushpamalar et al studied the thermal behavior of polystyrene grafted SG and reported an increase in thermal stability of sago starch . TGA of SG‐g‐AA and SG‐g‐AAm both showed formation of thermostable copolymer after grafting . The DSC thermograms of SG grafted Methacrylic Acid (MA) indicated a decrease in glass transition temperature (T g ) of SG.…”

Section: Characterization Of Sago Starch Graft Copolymersmentioning

confidence: 99%

See 3 more Smart Citations

Syntheses, Characterization and Applications of Graft Copolymers of Sago Starch – A Review

Lele¹,

Kumari²,

Niju³

2018

Starch Stärke

View full text Add to dashboard Cite

Modified natural polymers with improved structural, physical, and chemical properties have been gaining increasing importance in the industry as they are abundant, cheap, renewable, and biodegradable. Graft copolymerization is one of the effective ways to improve the properties of natural polymers. Sago starch (SG) based graft copolymers are becoming increasingly important due to their remarkable adhesion, high water absorbency, and biodegradability. There are many reports on the physico‐chemical characteristics, pharmaceutical applications, and several other chemical modifications (esterification, etherification, oxidation of OH groups etc.) of SG, but only a few review articles include studies on its graft copolymers. This review article summarizes use of different chemical initiators and irradiation techniques for generation of starch macroradicals. It also includes the effect of monomer and initiator concentration, reaction time, and temperature on grafting parameters such as percentage grafting and grafting efficiency. It discusses the employment of techniques such as Infra‐red spectroscopy, Scanning Electron Microscopy, Thermogravimetric analysis, Differential Scanning Calorimetry, and X‐ray diffraction in the characterization of graft copolymers of SG. Owing to excellent mechanical and swelling properties, graft copolymers of SG find application in various fields such as chelating resins, drug delivery systems, wound dressing, coagulants, paper additives, film coatings etc.

show abstract

“…Senna et al reported an increase in the intensity of the absorption band due to CO stretching, confirming the presence of grafted chains of MAA in the graft copolymer …”

Section: Characterization Of Sago Starch Graft Copolymersmentioning

confidence: 84%

Section: Characterization Of Sago Starch Graft Copolymersmentioning

confidence: 96%

Section: Graft Copolymerization Onto Sago Starchmentioning

confidence: 99%

Section: Characterization Of Sago Starch Graft Copolymersmentioning

confidence: 99%

See 2 more Smart Citations

Syntheses, Characterization and Applications of Graft Copolymers of Sago Starch – A Review

Lele¹,

Kumari²,

Niju³

2018

Starch Stärke

View full text Add to dashboard Cite

show abstract

“…Vinyl monomers, such as vinyl chloride [2], acrylic acid [3,4], methyl methacrylate [5], and acrylamide [6][7][8], can be grafted onto starch by various techniques. There are also some studies concerned with grafting vinyl acetate (VAc) onto starch in the literature.…”

Section: Introductionmentioning

confidence: 99%

Graft copolymerization of poly(vinyl acetate) onto starch using KMnO4-H2SO4 redox system

Niu

2013

Journal of Polymer Engineering

View full text Add to dashboard Cite

The graft copolymerization of poly(vinyl acetate) [poly(VAc)] onto starch was studied using the KMnO 4 -H 2 SO 4 redox system. The grafting parameters are favored by changing the concentration of KMnO 4 , the concentration of acid, the temperature, the time, and the concentration of monomer. A maximum graft yield of 38.3% was obtained at optimum conditions: KMnO 4 concentration = 3.0 × 10 -3 mol/l, concentration of acid = 1.5 × 10 -2 mol/l, temperature = 40°C, time = 3 h, and concentration of monomer = 1 mol/l. The grafting of poly(VAc) onto starch was confirmed by the IR spectra of pure sago starch, poly(VAc), and poly(VAc) grafted starch. Both swelling power and solubility increased with the increase in temperature. Graft copolymerization increased swelling power and reduced solubility. This material may have use as an application as a biodegradable plastic.

show abstract

Surface modification of polypropylene waste by the radiation grafting of styrene and upcycling into a cation‐exchange resin

Hassan

Taimur

Khan

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study, we radiation‐grafted polypropylene waste (PPw) powder obtained from the accelerated aging of pristine polypropylene with styrene (St) using γ rays from a Co‐60 source at dose rate of 4.78 kGy/h. The influence of the variation of the γ absorbed dose, solvent types, and monomer concentration on the grafting yield was investigated. Solution grafting in methanol resulted in a higher grafting yield of 162.6% at 30 kGy in contrast to the 69.5% obtained in the absence of solvent. Grafting was found to be enhanced with the increased dilution of St with methanol. The grafted St units were incorporated with sulfonic (SO3H) groups by a sulfonation reaction with sulfuric acid. Fourier transform infrared spectroscopy, X‐ray diffraction spectrometry, scanning electron microscopy/energy‐dispersive X‐ray spectroscopy, and thermogravimetric analysis were used to characterize the grafted and sulfonated products. Sulfonation of 162.6% grafted PPw powder exhibited a maximum ion‐exchange capacity (IEC) of 3.56 mequiv/g. The utilization of PPw and its conversion into sulfonated PPw with comparable IECs is a new addition to already existing radiation grafting systems. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47145.

show abstract

Radiation Graft Co-polymerization of Methacrylic Acid (MAA) onto Sago Starch Films

Cited by 9 publications

References 21 publications

Syntheses, Characterization and Applications of Graft Copolymers of Sago Starch – A Review

Syntheses, Characterization and Applications of Graft Copolymers of Sago Starch – A Review

Graft copolymerization of poly(vinyl acetate) onto starch using KMnO4-H2SO4 redox system

Surface modification of polypropylene waste by the radiation grafting of styrene and upcycling into a cation‐exchange resin

Contact Info

Product

Resources

About