scholarly journals MASTIC-G-POLY (ACRYLAMIDE): MICROWAVE-ASSISTED SYNTHESIS AND CHARACTERISATION

2021 ◽  
pp. 228-234
Author(s):  
MOHIT KUMAR ◽  
SURAJPAL
Keyword(s):  
Design Space ◽  
Maximum Yield ◽  
Ceric Ammonium Nitrate ◽  
Microwave Assisted Synthesis ◽  
Box Behnken Design ◽  
Critical Quality Attributes ◽  
Grafting Efficiency ◽  
Microwave Assisted ◽  
Free Radical Initiator ◽  
Poly Acrylamide

Objective: The objective of the present investigation was the synthesis of grafted co-polymer gum mastic using acrylamide as the monomer. Methods: 3-factor 3-level response surface Box-Behnken design, which requires 15 runs including three replicates of the central run, was used for the synthesis of graft copolymers of mastic gum with acrylamide using ceric ammonium nitrate as the free radical initiator. The critical synthesis and process parameters; CSPP (A = concentration of monomer, B = concentration of initiator and C= Temperature) to generate design space and optimize formulation with an aim to obtain critical quality attributes (CQA, Y1 =% Yield, Y2 =% Grafting, Y3 =% grafting efficiency). Result: Formulation F14 having a maximum % yield of 75.89% with % grafting of 210% and % grafting efficiency 51.57% was selected as best. Conclusion: The microwave-assisted grafted mastic gum was prepared successfully and optimized by using Box Behnken design.

GUM KARAYA-G-POLY (ACRYLAMIDE): MICROWAVE ASSISTED SYNTHESIS, OPTIMISATION AND CHARACTERISATION

2020 ◽  
pp. 143-152
Author(s):  
LOVELEENPREET KAUR ◽  
G. D. GUPTA
Keyword(s):  
Ammonium Nitrate ◽  
Irradiation Time ◽  
Ceric Ammonium Nitrate ◽  
Microwave Assisted Synthesis ◽  
Scanning Calorimetry ◽  
Box Behnken Design ◽  
Grafting Efficiency ◽  
Microwave Assisted ◽  
Gum Karaya ◽  
Karaya Gum

Objective: The objective of the present research is to formulate acrylamide grafted Karaya gum by using microwave-assisted grafting method and optimisation is performed by using Box behnken design. Methods: The extracted mucilage of gum Karaya was modified into grafted gum Karaya by using a microwave-assisted method. Acrylamide was used as monomer and ceric ammonium nitrate (CAN) is used as redox initiator. The experimental design for optimisation include three independent variables gum concentration (X1), ceric ammonium nitrate (CAN) amount (X2) and irradiation time (X3) while the dependent variables were % yield (Y1), % grafting (Y2) and % grafting efficiency (Y3). The optimised formulation was characterized by fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), x-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. Results: After optimisation the formulation with acrylamide amount 5 g, ceric ammonium nitrate amount 200 mg and irradiation time of 2 min was selected as optimized formulation. The optimised formulation has percentage grafting of 853.5%, with grafting efficiency of 77.59%. Conclusion: The application of box behnken design for optimisation was performed successfully in microwave assisted grafting of acrylamide on karaya gum.

scholarly journals Gum colocasia-g-polyacrylamide: Microwave-assisted synthesis and characterization

2020 ◽  
Vol 11 (4) ◽  
pp. 6698-6706
Author(s):  
Loveleenpreet Kaur ◽  
Gupta G D
Keyword(s):  
Irradiation Time ◽  
Colocasia Esculenta ◽  
Microwave Assisted Synthesis ◽  
Scanning Calorimetry ◽  
Grafting Efficiency ◽  
Microwave Assisted ◽  
Graft Polymers ◽  
Percentage Yield ◽  
Effect On Yield ◽  
Microwave Time

In the present investigation, an attempt has been made for grafting of acrylamide on the backbone of Colocasia esculenta by using microwave-assisted grafting method, which is a convenient and versatile route for the development of polysaccharide-based materials. The dried mucilage of colocasia was prepared from fresh rhizomes. The optimization was performed by using Box Behnken matrix design (BBD) and response surface methodology (RSM) using design expert software. A series of graft polymers, varying in the amount of acrylamide, ammonium persulphate and microwave irradiation was prepared. The effect of Microwave time, gum concentration and power on percentage yield, percentage grafting and percentage grafting efficiency has been optimized and evaluated by 3D surface response graphs. It has been observed that power and irradiation time has a significant synergistic effect on % yield, % grafting and % grafting efficiency however gum concentration produce slight increment up to a limit after that the effect becomes almost constant. The selected optimized formulation is F8  with a percentage yield of 99.57%, percentage grafting of 634.33% and percentage grafting efficiency of 87.49%. Optimized formulation was subjected to Fourier transform infrared spectroscopy, Differential scanning calorimetry, X-ray diffraction and Scanning electron microscopy for characterization which committed the grafting of acrylamide on Colocasia esculenta.

Microwave Assisted Synthesis of Cationic Amino Sugar Surfactants

2020 ◽  
Vol 57 (3) ◽  
pp. 265-272
Author(s):  
Priya S. Singh ◽  
Aizaz Shaikh ◽  
Aditi Deshmukh ◽  
Amit P. Pratap
Keyword(s):  
Amino Sugar ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted
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