Journal of Polymer and Biopolymer Physics Chemistry

Current Issue» Volume 2, Number 4 (2014)

Article

Effects of Fiber Inclusion and γ Radiation on Physico-mechanical Properties of Jute Caddies Reinforced Waste Polyethylene Composite

1Institute of Radiation and Polymer Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh

2Department of Chemistry, Jahangirnagar University, Dhaka, Bangladesh


Journal of Polymer and Biopolymer Physics Chemistry. 2014, 2(4), 91-97
DOI: 10.12691/jpbpc-2-4-6
Copyright © 2014 Science and Education Publishing

Cite this paper:
Sardar M Shauddin, Chironjit. Effects of Fiber Inclusion and γ Radiation on Physico-mechanical Properties of Jute Caddies Reinforced Waste Polyethylene Composite. Journal of Polymer and Biopolymer Physics Chemistry. 2014; 2(4):91-97. doi: 10.12691/jpbpc-2-4-6.

Correspondence to: Sardar  M Shauddin, Institute of Radiation and Polymer Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh. Email: sms.baec@gmail.com

Abstract

In spite of banning thin polyethylene bag, it has been used in Bangladesh by both retailer and consumer for its convenience and affordability and most utility comes from packaging retailed goods. There is a serious concern among consumers and environmentalists about the environmental impacts on plastic bags. Due to lack of proper plastic waste management our environment is becoming more and more polluted day by day. In the present study, an eco-friendly technique was adopted for reducing such type of pollution by reusing polyethylene shopping bag as polymer matrix in composite. Jute mill wastage which is commonly known as jute caddies (JC) reinforced waste polyethylene (WPE) based low cost randomly oriented discontinuous fibrous composite was fabricated using traditional hand layup method. Fourier Transform Infrared Spectroscopy (FT-IR) was used to investigate the chemical composition of both raw jute and jute caddies. Jute caddies content in the composite was varied from 20 to 45% where, 32% JC enriched composite showed the best performance in mechanical tests. Mechanical properties such as tensile and bending of composites were evaluated following several standard tests and methods. Jute caddies reinforced low density polyethylene (LDPE) based another type composite (JC/LDPE) was also fabricated to compare with JC/WPE. In order to increase the bonding strength between fiber and matrix, both types of composites were irradiated with gamma rays of dose varied from 2.5 to 12.5 kGy where, composites irradiated with 5 kGy dose delivered the best results. Water absorption tests of the composites according to the fiber content were done successfully for knowing the water resistance properties.

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References

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Article

Bioplastics: Its Timeline Based Scenario & Challenges

1Department of Biotechnology, Sapthagiri College of Engineering, Bangalore- 57, Karnataka, India


Journal of Polymer and Biopolymer Physics Chemistry. 2014, 2(4), 84-90
DOI: 10.12691/jpbpc-2-4-5
Copyright © 2014 Science and Education Publishing

Cite this paper:
Swati Pathak, CLR Sneha, Blessy Baby Mathew. Bioplastics: Its Timeline Based Scenario & Challenges. Journal of Polymer and Biopolymer Physics Chemistry. 2014; 2(4):84-90. doi: 10.12691/jpbpc-2-4-5.

Correspondence to: Blessy  Baby Mathew, Department of Biotechnology, Sapthagiri College of Engineering, Bangalore- 57, Karnataka, India. Email: blessym21@gmail.com

Abstract

There has been substantial interest in the advancement and production of biodegradable polymer to solve the current problem of pollution triggered by the continuous use of synthetic polymer of petroleum origin. The likelihood of producing these bio- polymers commercially and at comparable cost has been the key focus in this area. The most promising way of making plastics from other abundant renewable sources like corn, soy beans, sugarcane etc. is the avenue of Bio plastics. This paper is a comparative study that confers the likelihood of the conventional petro-plastics being substituted by the new-age degradable and renewable bio-derived polymers. It presents the keynote issues that support findings of the benefits these materials have in relation to conventional, petrochemical based counterparts. It is the view of the authors that biodegradable plastic materials are most apt for single-use disposable applications where the post-consumption waste can be locally composted.

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Article

Review on the Fundamentals of Polymer Combustion and Flammability Characteristics for Hybrid Propulsion

1School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, China


Journal of Polymer and Biopolymer Physics Chemistry. 2014, 2(4), 78-83
DOI: 10.12691/jpbpc-2-4-4
Copyright © 2014 Science and Education Publishing

Cite this paper:
Junjie Chen, Xuhui Gao. Review on the Fundamentals of Polymer Combustion and Flammability Characteristics for Hybrid Propulsion. Journal of Polymer and Biopolymer Physics Chemistry. 2014; 2(4):78-83. doi: 10.12691/jpbpc-2-4-4.

Correspondence to: Junjie  Chen, School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, China. Email: comcjj@163.com

Abstract

Hybrid Propulsion is an attractive alternative to conventional liquid and solid rocket engines. This is an active area of research and technological developments. The potential wide application of the hybrid engines opens the possibility for safer and more flexible space vehicle launching and manoeuvring. The fundamental combustion issues related to further development of hybrid rockets are discussed in the present paper. The emphasis is made on the properties of the potential polymeric fuels and their modification. The fundamentals of polymeric fuel combustion and the flammability Characteristics are discussed.

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References

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Article

Acoustical Investigations of Molecular Interactions in Polymer Solution of Pan/Clay Nano Composites and Dmso

1Acoustics Research Centre, 4-215, Mississauga Valley Blvd., Mississauga, L5A 1Y7, ON, Canada

2Department of Physics, Rayat Bahra Institute of Engg. & Nano Technology, Hoshiarpur-146001, Punjab, India


Journal of Polymer and Biopolymer Physics Chemistry. 2014, 2(4), 73-77
DOI: 10.12691/jpbpc-2-4-3
Copyright © 2014 Science and Education Publishing

Cite this paper:
D. P. Singh, Arun Upmanyu. Acoustical Investigations of Molecular Interactions in Polymer Solution of Pan/Clay Nano Composites and Dmso. Journal of Polymer and Biopolymer Physics Chemistry. 2014; 2(4):73-77. doi: 10.12691/jpbpc-2-4-3.

Correspondence to: D.  P. Singh, Acoustics Research Centre, 4-215, Mississauga Valley Blvd., Mississauga, L5A 1Y7, ON, Canada. Email: drdpsn@hotmail.com

Abstract

Acoustical studies of intermolecular interactions in the polymer solution of PAN / clay nanocomposites and DMSO have been done at 30 degree Celsius using experimental ultrasonic velocity and density data taken from literature. Several acoustical and thermo-dynamical parameters such as isothermal compressibility, adiabatic compressibility, specific heat ratio, volume expansivity, surface tension, specific sound velocity, specific adiabatic compressibility, intermolecular free length, pseudo-Gruneisen parameter and classical absorption coefficient have been evaluated. Some elastic parameters such as Young modulus, shear modulus, bulk modulus and Poisson ratio have also been determined. Non linear parameters such as Moelwyn-Hughes parameter, reduced volume, reduced compressibility, Sharma’s constants, Huggins parameter, isobaric acoustical parameter, isochoric acoustical parameter, isothermal acoustical parameter, fractional free volume, repulsive exponent, thermo acoustical parameter such as A*and B*, Bayer’s non-linear parameter, internal pressure, isochoric thermo-acoustical parameter and isochoric temperature coefficient of internal pressure have also been calculated. The Moelwyn-Hughes parameter has been utilized to establish relation between the Bayer’s non linear parameter, internal pressure and Sharma constant. Relationships among the isobaric, isothermal and isochoric thermo-acoustical parameter have been studied and analyzed for PAN/clay nano composites. The obtained results have been compared with the experimental results as available in literature. The non-ideal behavior of the polymer solution has been explained in terms of its composition and variation of its acoustical and thermo-dynamical parameters. The present treatment offers a convenient method to investigate thermo-acoustic properties and anharmonic behavior of the system under study.

Keywords

References

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Article

The Determination of the Solubility Parameter (δ) and the Mark-Houwink Constants (K & α) of Food Grade Polyvinyl Acetate (PVAc)

1Department of Chemistry, Hofstra University, Hempstead, New York


Journal of Polymer and Biopolymer Physics Chemistry. 2014, 2(4), 67-72
DOI: 10.12691/jpbpc-2-4-2
Copyright © 2014 Science and Education Publishing

Cite this paper:
Ronald P. D’Amelia, Jaksha C. Tomic, William F. Nirode. The Determination of the Solubility Parameter (δ) and the Mark-Houwink Constants (K & α) of Food Grade Polyvinyl Acetate (PVAc). Journal of Polymer and Biopolymer Physics Chemistry. 2014; 2(4):67-72. doi: 10.12691/jpbpc-2-4-2.

Correspondence to: Ronald  P. D’Amelia, Department of Chemistry, Hofstra University, Hempstead, New York. Email: Ronald.P.Damelia@hofstra.edu

Abstract

Polyvinyl alkyl ester of carboxylic acids are a family of macromolecules in which the side chain esters (pendant groups) increase in molar mass and hydrophobicity and decrease in structural polarity as the number of carbons in the carboxylic acid increases. The most important polymer in this family is Polyvinyl Acetate (PVAc). The Solubility Parameter (δ) is a unique physical property of any polymeric material and can be a useful guide to understanding the miscibility or compatibility of two polymeric substances. It is therefore essential in working with polymeric blends of PVAc that the experimental solubility parameter be accurately and precisely known. We have experimentally determined the solubility parameter of food grade PVAc by measuring the intrinsic viscosity of several different molecular weight PVAc samples (ranging from 11K -75K Daltons) in four different solvents (acetone, methanol, tetrahydrofuran, toluene,) at 25°C using glass capillary viscometry. We also estimated the solubility parameter using the principles of group additivity contribution due to the atoms, groups and bonds present in PVAc based on the theories of Small, Hoy, and Van Krevelen. The Mark-Houwink constants for PVAC in the four solvents were also experimentally determined. Our experimentally determined solubility parameter was 9.35 (cal/cm3)1/2 which compared well with the computational values obtained by Hoy (9.56), Small (9.45) and Van Krevelen (9.27).

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Article

Fabrication of Poly(Caprolactone) Nanofibers by Electrospinning

1Biomaterials and Tissue Engineering Laboratory, Department of Materials Engineering, Indian Institute of Science, Bangalore, India


Journal of Polymer and Biopolymer Physics Chemistry. 2014, 2(4), 62-66
DOI: 10.12691/jpbpc-2-4-1
Copyright © 2014 Science and Education Publishing

Cite this paper:
Athira K. S., Pallab Sanpui, Kaushik Chatterjee. Fabrication of Poly(Caprolactone) Nanofibers by Electrospinning. Journal of Polymer and Biopolymer Physics Chemistry. 2014; 2(4):62-66. doi: 10.12691/jpbpc-2-4-1.

Correspondence to: Athira  K. S., Biomaterials and Tissue Engineering Laboratory, Department of Materials Engineering, Indian Institute of Science, Bangalore, India. Email: athiraiisc@gmail.com

Abstract

Nanofibers at 466 ± 242 nm average diameter were fabricated due to phase separation caused by polarizability difference under static electric field. Fibre morphology was observed under a scanning electron microscopy. An insight into the process of electrospinning of the polymer, poly(caprolactone) was systematically evaluated and discussed the effects of the solution parameter of concentration of the polymer solution and process parameters of voltage, flow rate and drop height to fabricate poly(caprolactone) electrospun fibers with desired morphologies in this manuscript. Of all combinations, the best nanofibres with the fewest beads and finest fibers could be electrospun with a more uniform distribution in with a 15 kV applied voltage of on poly(caprolactone) solution of 12 per cent concentration at a 0.5 ml/h flow rate, from a drop height of 15 cm and the structure of nanofibres was found completely dry and stabilized.

Keywords

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