Advancement in Packaging Film Using Microcrystalline Cellulose and TiO2
Pathik Shah,
Kalpana Pandey
Issue:
Volume 3, Issue 6, November 2017
Pages:
97-102
Received:
23 October 2017
Accepted:
24 November 2017
Published:
21 December 2017
Abstract: The objective of this study is to study the effects of the addition of TiO2 and microcrystalline cellulose on properties of packaging films based on biodegradable polymer blends. Biocompositions of Linear Low Density Polyethylene (LLDPE) - Microcrystalline Cellulose were prepared by Twin Screw Extrusion using of maleic anhydride grafted polyethylene as compatibilizer and TiO2 as pro-oxidative additives. Polyethylene wax was used as processing aid to ease the blown film process. The presence of large amount of microcrystalline cellulose contents had a divergent effect on the tensile properties of Cellulose-PE blend. However, the addition of compatibilizer to the blends improved the interfacial bonding between the two materials. High amount of cellulose also was found to upsurge the rate of biodegradability of Cellulose-PE composite films. The burst strength and soil burry test of this composite film was also improved. It suggest that this film can be used for packaging film which can degraded up to certain extend.
Abstract: The objective of this study is to study the effects of the addition of TiO2 and microcrystalline cellulose on properties of packaging films based on biodegradable polymer blends. Biocompositions of Linear Low Density Polyethylene (LLDPE) - Microcrystalline Cellulose were prepared by Twin Screw Extrusion using of maleic anhydride grafted polyethylen...
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Kinetic Studies on Bulk Atom Transfer Radical Polymerization of Styrene
Samiul Islam Chowdhury,
Lamya Zahir,
Tariqul Hasan
Issue:
Volume 3, Issue 6, November 2017
Pages:
103-107
Received:
9 November 2017
Accepted:
1 December 2017
Published:
21 December 2017
Abstract: The long chain vinyl end-functional polystyrene has been synthesized in bulk polymerization method using atom transfer radical polymerization (ATRP) with Undecenyl-2-Bromopropionate (UnBP) and CuCl/bypyridine catalytic system. The polymerizations demonstrate an increase in molecular weight and conversion in direct proportion to the polymerization time by consumed monomer which exhibited first-order kinetics. This study concludes the simple kinetics of polystyrene synthesized by ATRP using initiator and ligand-to-copper(I) halide was found to be 1:2:1, which tentatively indicates that the coordination sphere of the active copper(I) center contains two bipyridine ligands. The propagation rate has been investigated for long range of time for ensuring that the rate of radical combination or disproportionation is sufficiently less.
Abstract: The long chain vinyl end-functional polystyrene has been synthesized in bulk polymerization method using atom transfer radical polymerization (ATRP) with Undecenyl-2-Bromopropionate (UnBP) and CuCl/bypyridine catalytic system. The polymerizations demonstrate an increase in molecular weight and conversion in direct proportion to the polymerization t...
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