Studies on Metallocene Polyolefin and Polyvinyl Chloride for Blood ...

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Chapter 2 Table 2.3. Properties ofPolyolefin Plastomer(Affinity PL1845)* Physical Properties Test Method Values Percentage comonomer, Dow, based on ASTM Octene D-2238,Method B Melt Index, dg/min ASTM D-1238 3.5 Density, gmlcc ASTM D-792 0.910 DSC Melting Point, °C Dow 103 Dow Rheology Index(DRI) Dow 1.4 Puncture Resistance, J/cm3 Dow 18 Dart Impact, g (Method B) ASTMD-1709 470 EImendorfTear Strength, g (Type A) ASTMD-1922 178 MD ASTMD-1922 362 CD Ultimate Tensile (MPa) MD CD 9.5 ASTMD-882 45.4 ASTM D-882 33.4 Ultimate Elongation, % 527 ASTM D-882 MD 664 ASTM D-882 CD Clarity ASTM D-1746 75 Gloss, 20 0 ASTM D-2457 145 Haze, % ASTMD-1OO3 0.7 Seal Initiation Temperature, °C Dow 99 * Data taken from manufacturer's product data sheet. As perthe manufacturer, Affinity PL 1845 polymer complies with FDA regulation 21 CFR 177.1520 (c) 3.2a, which allows for its use in direct food contact applications. 2.1.7 Ethylene vinyl acetate co-polymer Two grades ofEVA copolymer with different vinyl acetate content i.e., 12 and 18 were procured from National Organic Chemicals India Limited, Mumbai, India. The copolymers were obtained in the form ofbeads, having 2-3mmsize. 42
43 Table 2.4. Properties ofethylene vinyl acetate co-polymers (EVA) Polymer Grade Vinylacetate content, (wt.%)# Melt flow index, {/g (10 Irin-1)}# Density, g/cc# Melting point, °C# EVA12 12 2 0.931 95 # Data taken from manufacturer's product data sheet 12.2 Preperation of Blends 2.2.1 PVC/Elastomer Blends Materials and Methods EVA18 18 10 0.937 PVC was mixed with other ingredients as per Table 2.5, except the polymeric plasticizer, by the dry blending technique in high-speed mixer. Blends of PVC and three different elastomers with varying compositions as mentioned in table 2.5 were prepared by mixing in a Haake Torque rheometer (Model: Rheornix-6oo) fitted with cam rotors at 160°C using a rotor speed of4Orpm. Compounded PVC was initially melted in the mixer for 1-2 minutes and then masticated rubber strips were added to molten PVC till the mixing torque was stabilized. The blend thus obtained was passed through a laboratory two-roll mill set at 2 mm-nip setting to get a sheet, which was subsequently compression moulded between aluminium foils at 160°C for 3 minutes at a pressure of lOO kg/crn2 in an electrically heated press (Santhosh Industries, India) to obtain sheets ofdimensions 120rnm x 12OrnmxOJrnm. 88
Page 1 and 2: Studies on Metallo
Page 3 and 4: DECLARATION I here by declare that
Page 5: Acknowledgements I gratefully ackno
Page 9 and 10: Chapter 1 INTRODUCTION 11.1 Role of
Page 11 and 12: INTRODUCTION IIntroduction Polymers
Page 13 and 14: 5 PVC is a relatively rigid and bri
Page 15 and 16: 7 Introduction The following sectio
Page 17 and 18: 9 11.3 Limitations of Flexible PVC
Page 20 and 21: Chapter 1 12 leaching of DEHP into
Page 22: Chapter 1 14 blood transfusions, ha
Page 25 and 26: 17 Introduction Health Canada An ex
Page 27 and 28: 19 Polyethylene Introduction Polyet
Page 30: Chapter 1 22 found to increase sign
Page 33: 25 Introduction With all these attr
Page 36 and 37: Chapter 1 28 12. Hong, K. Z., Medic
Page 38 and 39: Chapter 1 30 61. Thornton, J., McCa
Page 41 and 42: 33 Introduction 134.Part R, Koh Y J
Page 43 and 44: 35 Introduction 175. Koide Y., Bott
Page 46 and 47: Chapter Index 2.3.6 Melt Flow lndcx
Page 49: 41 The physical properties ofDEHP a
Page 62 and 63: Chapter 2 54 4. ASTM D2240-98. Stan
Page 64: Chapter Index I 3.4 Conclusions I 3
Page 71: 63 Use ofPolymeric Plasticizers un
Page 83 and 84: 75 Use ofPolymeric Plasticizers un
Page 87: 79 Use afPolymeric Plasticizers un
Page 90 and 91: Chapter4 METALLOCENE POLYOLEFIN: A
Page 92: METALLOCENE POLYOLEFIN: A POTENTIAL
Page 96: 88 Evaluation ofMetallocene Polyole
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1 0 0 4.3.9 In Vitro Haemolysis Tes
Page 111 and 112:
Chapter 4 103 ]3. Lipsitt B. 'Medic
Page 113:
Chapter Index 5.3.7.3 Effect of Vin
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Chapter 5 0.2 o -0.2 ii ·0.4 t- u
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Chapter 5 125 5.3.7.3 Effect of Vin
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Chapter 5 131 Table 5.6 Carbon diox
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Chapter 5 5. 3.14 Effect of Sterili
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Chapter 5 145 13. Kontopoulou, M. L
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BIOLOGICAL EVALUATION OF MODIFIED M
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149 Biological Evaluation ofModifie
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Chapter 6 6.3.2 Clotting Time The i
Page 166 and 167:
Chapter 6 158 virgin mPO and the bl
Page 168 and 169:
Chapter 7 Summary and Conclusions I
Page 170:
Chapter 7 162 ,water and gas perrne
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