journal of polymer & composites (vol2, issue2)

Journal of

Polymer & Composites

(JoPC)

May - August 2014

STM JOURNALSScientific Technical Medical

ISSN: 2321–8525

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Journal of Polymer & Composites

(ISSN 2321–8525)

Journal of Polymer & Composites

Processing and Manufacturing of Polymers and Composites

Thermoplastic composites

Fabrication & Architecture of Polymer

Engineering plastics, Nanocomposites and Polyblends

Bioconjugates, Biohybrid and Cellular Polymers

Ceramic-matrix, Metal-matrix, Polymer-matrix composites

Prototyping Reinforcement Materials

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I take the privilege to present the hard copy compilation for the [Volume 2 Issue 2] of Journal of

Polymer & Composites. The intension of JoPC is to create an atmosphere that stimulates

creativeness, research and growth in the area of Polymer & Composites.

The development and growth of the mankind is the consequence of brilliant Research done by

eminent Scientists and Engineers in every field. JoPC provides an outlet for Research findings and

reviews in areas of Polymer & Composites found to be relevant for National and International recent

developments & research initiative.

The aim and scope of the Journal is to provide an academic medium and an important reference for

the advancement and dissemination of Research results that support high level learning, teaching and

research in the domain of Polymer & Composites.

Finally, I express my sincere gratitude and thanks to our Editorial/ Reviewer board and Authors for

their continued support and invaluable contributions and suggestions in the form of authoring write-

ups/ reviewing and providing constructive comments for the advancement of the journals. With

regards to their due continuous support and co-operation, we have been able to publish quality

Research/Reviews findings for our customers base.

I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.

Dr. Archana Mehrotra

Director

STM Journals

Director's Desk

STM JOURNALS

1. Application of Poly (o-anisidine) Nanocomposite and PET Recycled Polyester Amide in Anticorrosive Coatings Kunal V. Yeole, Aarti P. More, Shashank T. Mhaske 1

2. Taguchi Analysis of the Thrust Force and Delamination in Drilling of Glass Fiber Reinforced Epoxy/Clay Nanocomposites R.M. Kulkarni, H. N. Narasimha Murthy, G. B. Rudrakshi, Amith V. 14

3. Determination of Accurate Molecular Weights of Cationic Polyacrylamide Polymers through Advanced Gel Permeation Chromatography Triple Detection TechniqueAnsuman Mahato 24

4. Flexural Characterization of Sandwich Composites; Effect of Varying PU Foam Density and E-Glass Fabric on Flexural Strength Manujesh B.J., R .Vijayalakshmi Rao, Prajna M.R. 29

5. Thermo-Mechanical Properties of Unsaturated Polyester Reinforced with Coconut and Snail ShellsS. O. Adeosun, Akpan E. I., H. A. Akanegbu 44

ContentsJournal of Polymer & Composites

JoPC (2014)© STM Journals 2014. All Rights Reserved

Journal of Polymer & Composites ISSN: 2321-2810 (online), ISSN: 2321-8525 (print)

Volume 2, Issue 2

www.stmjournals.com

Application of Poly (o-anisidine) Nanocomposite and PET

Recycled Polyester Amide in Anticorrosive Coatings

Kunal V. Yeole, Aarti P. More, Shashank T. Mhaske*

Department of Polymer and Surface Engineering, Institute of Chemical Technology,

Mumbai, Maharashtra, India

Abstract Polyethylene terephthtalate (PET) was depolymerized through aminolysis technique using ethanolamine into Bis (2-hydroxyethylene) terepthalamide (BHETA). BHETA is having

hydroxyl functionality present in it so it is used as monomer and treated with sebacic acid

using sulphuric acid as a catalyst. The synthesized resin having ester linkage present in it along with that in BHETA, amide linkage is also present hence it can be called as

polyesteramide resin. This synthesized carboxyl terminated resin was cured with epoxy

in combination with Poly (o-anisidine) (POA) at various concentration of POA. Poly (o-anisidine) was investigated by Fourier Transform Infrared Spectroscopy, X-ray Analysis

and Morphological Study. Coating shows excellent mechanical properties due to proper balance of flexibility and hardness. Anticorrosive properties of the coating were

characterized by salt spray and Electrochemical Impedance Spectroscopy (EIS). Addition

of POA helps to improve the anticorrosive properties of coating which was proved by salt spray and EIS.

Keywords: Recycling, Bis (2-hydroxyethylene) terephthalamide, Aminolysis,

Polyesteramide, Poly (o-anisidine)



Volume 2, Issue 2

www.stmjournals.com

Taguchi Analysis of the Thrust Force and Delamination in

Drilling of Glass Fiber Reinforced Epoxy/Clay

Nanocomposites

R.M. Kulkarni 1*, H. N. Narasimha Murthy

2, G. B. Rudrakshi

3, Amith V.

4

1,3Basaveshwar Engineering College, Department of Mechanical Engineering, Bagalkot, India 2R. V. College of Engineering, Department of Mechanical Engineering, Bangalore, India

4Department of Mechanical Engineering, Vivekananda College of Engineering & Technology,

Puttur, Karnataka, India

Abstract Composites are replacing several materials due to their superior properties such as high

strength to weight ratio, high stiffness to weight ratio, better impact characteristics, corrosion resistance and design flexibility. Drilling is often required to facilitate the

assembly of the parts to get the final product. However, drilling induced damage affects

the quality of the drilled components. The present investigation is an attempt to study the effect of the cutting speed, the feed rate, the drill material, drill diameter and dispersion

of clay in epoxy on the responses such as thrust force and delamination factor at entry and exit. The Taguchi method suggests the optimal conditions for minimum thrust force

and delamination factor in drilling of Glass Fibre Reinforced Polymer (GFRP). Scanning

Electron Microscope (SEM) confirmed that delamination at the exit is greater than delamination at the entry. It was found that there was a remarkable decrease in the

residual tensile strengths as the hole size increased compared to the strength of the

specimen without any hole.

Keywords: Drilling, scanning electron microscope (SEM), glass fibre reinforced

polymer (GFRP)



Volume 2, Issue 2

www.stmjournals.com

Determination of Accurate Molecular Weights of Cationic

Polyacrylamide Polymers through Advanced Gel

Permeation Chromatography Triple Detection Technique

Ansuman Mahato* Shri Jagdishprasad Jhabarmal Tiberawala University, Vidyanagri, Jhunjhunu, Rajasthan, India

Abstract Gel permeation chromatography along with refractive index detector or UV detector

provides relative molecular weight information along with PDI with respect to standard

used. If standards are of different nature than sample such relative results just are used to

compare polymers and co-polymers among themselves. These detectors fail to reveal information about other important polymer characters like size of polymer in solution

(hydrodynamic volume), branching pattern and intrinsic viscosity which can be analysed

by using triple detection GPC technique. In triple detection GPC accurate molecular weight can be analysed which is irrespective of standard used and also other polymer

properties can be analysed like branching pattern, size and viscosity. Triple detection

GPC technique uses static light scattering detector, viscometer along with RI detector simultaneously. Static light scattering detector along with RI can reveal accurate

molecular weight information along with size (Rg), without column calibration. Light scattering detector is generally used to measure higher molecular weight polymers. RI

along with Viscometer is used to determine accurate molecular weight by column

calibration but irrespective of standard used called Universal calibration. In this paper polyacrylamide co-polymers were analysed through triple detection techniques to

determine accurate molecular weight with properties.

Keywords: GPC, triple detection, universal calibration, PDI, hydrodynamic volume,

intrinsic viscosity, static light scattering



Volume 2, Issue 2

www.stmjournals.com

Flexural Characterization of Sandwich Composites;

Effect of Varying PU Foam Density and E-Glass

Fabric on Flexural Strength

Manujesh B.J.*1, R .Vijayalakshmi Rao

2, Prajna M.R.

3

1Department of Mechanical Engineering, KVG College of Engineering, Sullia,

D.K. Karnataka 574327, India 2Department of Materials Science, Mangalore University, Karnataka 574199, India

3Department of Computer Science & Engineering, KVG College of Engineering, Sullia,

D.K. Karnataka574327, India

Abstract This paper presents the results of an extensive investigation on flexural behavior and failure mechanisms of sandwich composites with polyurethane (PU) foam core and glass

reinforced vinylester as facesheet. The sandwich structures with PU foam of varied

density and glass fibres of different architecture are tested under three point bending. The experimental values of face bending strength (FBS) and core shear stress (CSS) are

evaluated. Effect of core density and E-glass fabric architecture on the flexural strength

is investigated. It has been observed that variation of core density and fabric architecture play a vital role in the failure modes of the sandwich composites. Under flexural loading,

sandwich composites failed through debonding between the facesheet and the core followed by delamination. With increase in the density of the core, failure mode changed

from debonding to core cracking followed by severe fibre rupture.

Keywords: Foam core, flexural, debonding, core shear strength, delamination



Volume 2, Issue 2

www.stmjournals.com

Thermo-Mechanical Properties of Unsaturated Polyester

Reinforced with Coconut and Snail Shells

S. O. Adeosun1, Akpan E. I.

2*, H. A. Akanegbu

1

1Department of Metallurgical and Materials Engineering, University of Lagos, Nigeria

2Department of Materials and Production Engineering, Ambrose Alli University, Nigeria

Abstract Particulate-filled polymer composites are becoming quite attractive because of their low

cost and wide applications. In this study, the effects of coconut shell (CS) and snail shell

(SS) volume fractions (5–50 vol. %) on the thermal and mechanical properties of

unsaturated polyester resin (UPR) composite are investigated. The results show that

tensile strength, elongation at break, flexural strength, and hardness of the composite

increase as filler concentration increases. However, impact strength of the composite decreases with increase in filler concentration. FTIR spectra of UPR composites show

that, at 30 vol. % filler content there is good and effective interfacial interaction between UPR matrix and the fillers. The thermal properties from DTA measurement show that the

glass transition temperature, Tg and Tm of the composites, at 5, 20 and 50 vol %

reinforcement contents, are lower and higher respectively to the cured-virgin UPR matrix. The morphology of fillers dispersion into the polymer matrix observed using the

scanning electron microscopy (SEM) indicates homogeneous dispersion in the UPR matrix with strong interfacial adhesion between the fillers and UPR matrix. These result

in enhanced mechanical properties.

Keywords: Coconut shell (CS), snail shell (SS), UPR composite, thermal and

mechanical properties

*Author for Correspondence E-mail: [email protected]

journal of polymer & composites (vol2, issue2)

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