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Investigation on the Structure and Properties of Different PE Blown Films

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Published/Copyright: March 26, 2013
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Abstract

Molecular orientation and structure development during film blowing have a major effect on mechanical and physical properties of polyethylene films. In this work the structures and morphology of three different polyethylene blown films; linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), and high density polyethylene (HDPE) were studied. A series of blown films were produced at different process conditions. The orientation of lamellae and lamellar stacks and the morphology of the films were characterized by SEM, AFM and X-ray diffraction. SEM images of the film plane surface MT (Machine-Transverse) and cross section slices in TN (Transverse- Normal) and MN (Machine-Normal) planes were made and compared with AFM images. It was observed that the surface morphology reflects a continuation of the bulk morphology for the cases studied. Changes in the blown film process parameters, such as take up ratio (TUR), blow up ratio (BUR) and frost line height (FLH) have an effect on structural parameters, crystallinity and mechanical properties.


Mail address: Shokoh Fatahi, École Polytechnique de Montréal, Département de Génie Chimique, CRASP, CP 6079, Succ. Centreville, Montréal, Québec, H3C 3A7 Canada. E-mail:

References

Ajji, A., Zhang, X., “Correlations between orientation and some properties of polymer films and sheets”, SPE ANTEC Tech. Papers, 1651-1655(2002)Search in Google Scholar

Ajji, A., et al., “Biaxial orientation in polyethylene films: comparison of infrared spectroscopy and X-ray techniques”, SPE ANTEC Tech. Papers, 1459-1463(2003)Search in Google Scholar

Babel, K. A., et al., “Kinematics, structure and properties relationship of polyethylene blown films”, SPE ANTEC Tech. Papers, 2112–2119 (1996)Search in Google Scholar

Chai, K. C., et al., “Influence of molecular weight distribution on LLDPE blown film processing conditions and property sensitivity”, SPE ANTEC Tech. Papers, 331–335 (2000)Search in Google Scholar

Fatahi, S., et al., “Structure-Property Correlations For PE Blown Films”, SPE ANTEC Tech. Papers (2005a)Search in Google Scholar

Fatahi, S., et al., “Correlation between structural parameters and property of PE blown films”, J. Plast. Film Sheet, 21, 281–305 (2005b)10.1177/8756087905059979Search in Google Scholar

Ghaneh-Fard, A., “Effects of film blowing conditions on molecular orientation and mechanical properties of polyethylene films”, J. Plast. Film Sheet, 15, 3, 194–218 (1999)10.1177/875608799901500304Search in Google Scholar

Godshall, D., et al., “Processing-structure-property investigation of blown HDPE films containing both machine and transverse direction oriented lamellar stacks”, Polymer, 44, 18, 5397-5406 (2003)Search in Google Scholar

Haudin, M. J., et al., “Etude des relations entre mise en forme, orientation et retraction dans des films de polyéthyléne basse densité réalisés par soufelage de gaine”, Ann. Chim. Sei. Mat, 28, 1, 91–107 (2003)Search in Google Scholar

Kim, Y.-M, et al, “Morphological considerations on the mechanical properties of blown High-Density Polyethylene films”, J. Appl. Polym. Sei, 63, 3, 289–299 (1997)Search in Google Scholar

Krishnaswamy, K. R., “Structure-property relationships in HMW-HDPE blown films”, SPE ANTEC Tech. Papers, 111–115 (2001)Search in Google Scholar

Krishnaswamy, K. R., Sukhadia, M. A., “Orientation characteristics of LLDPE blown films and their implications on Elmendorf tear performance”, Polymer, 41, 26, 9205-9217 (2000)Search in Google Scholar

Krishnaswamy, K. R., Sukhadia, M. A., “The influence of solid-state morphology on the impact strength of Linear Low Density Polyethylene blown films”, SPE ANTEC Tech. Papers, 2395–2399 (2002)Search in Google Scholar

Larena, A, Pinto, G, “The effect of surface roughness and crystallinity on the light scattering of polyethylene tubular blown films”, Polym. Eng. Sei, 33, 12, 742–747 (1993)Search in Google Scholar

Lu, J, Sue, H.-J, “Morphology and mechanical property relationship in Linear Low density Polyethylene blown films”, J. Mat. Sei, 35, 20, 5169–5178 (2000)Search in Google Scholar

Lu, J, Sue, H.-J, “Morphology and mechanical properties of blown films of a Low Density Polyethylene/Linear Low Density Polyethylene blend”, J. Polym. Sei, Part B, Polym. Phys, 40, 507–518 (2002)Search in Google Scholar

Lu, J, et al, “Phase structure characterization and processing-structure-property relationships in Linear Low Density Polyethylene Blown Films”, SPE ANTEC Tech. Papers, 1768–1774 (1999)10.1016/B978-188420776-1.50016-8Search in Google Scholar

Lu, J, et al, “Dual crystalline texture in HDPE blown films and its implication on mechanical properties”, Polymer, 42, 4635–4646 (2001)10.1016/S0032-3861(00)00719-9Search in Google Scholar

Murakami, S, et al, “Comparative study of structure and tensile properties of melt-pressed and extruded-blown films of HDPE”, J. Macro-mol. Sci.-Phys, B39 (5&6), 645–655 (2000)10.1081/MB-100102476Search in Google Scholar

Patel, M. R., et al, “Investigation of processing-structure-properties relationships in polyethylene blown films”, Polym. Eng. Sei, 34, 19, 1506–1514(1994)Search in Google Scholar

Simpson, M. D., Harrison, R. I., “The effect of processing parameters on the morphologies and mechanical properties of polyethylene blown films”, SPE ANTEC Tech. Papers, 1206–1209 (1993)Search in Google Scholar

Smith, P. F., et al, “Studies of optical haze and surface morphology of blown polyethylene films using Atomic Force Microscopy”, Polym. Eng. Sei, 36, 16, 2129–2134 (1996)Search in Google Scholar

Sukhadia, M. A., “The effects of molecular structure rheology, morphology and orientation on polyethylene blown film properties”, SPE ANTEC Tech. Papers, 160–168 (1998)Search in Google Scholar

Wang, L, et al, “Light transmission and haze of polyethylene blown thin films. Polymer Engineering and Science”, Polym. Eng. Sei, 41, 2, 358–372(2001)Search in Google Scholar

Zhang, X. M., et al, “Processing-structure-properties relationship of multilayer films. 1. Structure characterization”, Polymer, 42, 19, 8179–8195 (2001)Search in Google Scholar

Zhang, X. M., et al, “Effect of crystalline structure on tear resistance of LDPE and LLDPE blown films”, SPE ANTEC Tech. Papers, 1376–1380 (2003)Search in Google Scholar

Zhang, X. M., et al, “Oriented structure and anisotropy properties of polymer blown films: HDPE, LLDPE and LDPE”, Polymer, 45, 217–229 (2004a)10.1016/j.polymer.2003.10.057Search in Google Scholar

Zhang, X. M., et al, “Effect of cry stalline structure on tear resistance of LDPE and LLDPE-blown films”, J. Plast Film Sheet, 20, 43–52 (2004b)10.1177/8756087904044753Search in Google Scholar

Received: 2006-1-12
Accepted: 2007-4-25
Published Online: 2013-03-26
Published in Print: 2007-09-01

© 2007, Carl Hanser Verlag, Munich

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