Abstract
Considering the microstructure-processing-properties relationship, the attempt was made to distinguish the main structural features of drip irrigation tape grades. In this regards, two different commercial polyethylene grades using for irrigation tape application (DB and MD samples) with various microstructural features were fully characterized by means of thermal, rheological and mechanical measurements and microscopic observations. A set of DSC techniques revealed that DB sample has faster crystallization kinetic probably due to its high crystallizable segments in chains and broad molecular weight distribution. It was found, the type of co-monomer used in DB sample is 1-hexene and in MD sample is 1-butene, given the fact that the amount of co-monomer in DB sample is higher than MD. With special attention to various rheological and thermo-rheological methods, the presence of long branches in DB sample was confirmed, which led to melt strength enhancement and higher production rate. Plus, microscopic observations show that long chain branches cause the separation of amorphous and crystalline regions at the molecular scale in DB sample. This special morphology affects the long-term mechanical properties, so that more natural draw ratio and strain hardening modulus is observed in DB sample, which indicates more Environmental Stress Crack Resistance compared to MD sample.
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References
Yuan Y et al (2013) Study on double position molding technology of labyrinth type drip irrigation tape. J Chem Pharm Res 5(12):59–63
Nishimura RA (1989) Handbook on pressurized irrigation techniques, vol. 13, no. 6
Complex SKE (2017) Document made available under the Patent Cooperation Treaty (PCT)
Paula JMD, Wood-Adams M (2000) Effect of molecular structure on the viscoelastic behavior of polyethyelen. Kobunshi Ronbunshu 33(1):7489–7499. https://doi.org/10.1295/koron.33.19
Peng X, Watson H (2006) Metallocene ethylene-1-octene copolymers : Influence of comonomer content on thermo-mechanical, rheological, and thermo-oxidative behaviours before and after melt processing in an internal mixer. Polym Degrad Stab 91:3131–3148. https://doi.org/10.1016/j.polymdegradstab.2006.07.020
Wu T, Yu L, Cao Y, Yang F, Xiang M (2013) Effect of molecular weight distribution on rheological, crystallization and mechanical properties of polyethylene-100 pipe resins. J Polym Res 20(10). https://doi.org/10.1007/s10965-013-0271-9
Patel RM, Karjala TP, Savargaonkar NR, Salibi P, Liu L (2019) Fundamentals of structure–property relationships in blown films of linear low density polyethylene/low density polyethylene blends. J Plast Film Sheeting 35(4):401–421. https://doi.org/10.1177/8756087919844303
Wingstrand SL et al (2017) Rheological Link between Polymer Melts with a High Molecular Weight Tail and Enhanced Formation of Shish-Kebabs. ACS Macro Lett 6(11):1268–1273. https://doi.org/10.1021/acsmacrolett.7b00718
La Mantia FP, Acierno D (1983) Influence of the molecular structure on the melt strength and extensibility of polyethylenes. Polym Eng Sci 25(5):279–283
Hatzikiriakos SG (2000) Long chain branching and polydispersity effects on the rheological properties of polyethylenes. Polym Eng Sci 40(11):2279–2287
Stadler FJ et al (2006) influence of type and content of various comonomers on long-chain branching of ethene / alpha olefin copolymers. Macromolecules 39:1474–1482
Pircheraghi G, Sarafpour A, Rashedi R, Afzali K, Adibfar M (2017) Correlation between rheological and mechanical properties of black PE100 compounds – Effect of carbon black masterbatch. Express Polym Lett 11(8):622–634
Derakhshandeh M, Ansari M, Doufas AK, Hatzikiriakos SG (2017) Microstructure characterization of polyethylene using thermo-rheological methods. Polym Test 60:68–77. https://doi.org/10.1016/j.polymertesting.2017.03.010
Maddah Y et al (2020) Control over branching topology by introducing a dual catalytic system in coordinative chain transfer polymerization of olefins. Macromolecules 53(11):4312–4322. https://doi.org/10.1021/acs.macromol.0c00358
Kessner U, Kaschta J, Stadler FJ, Le Duff CS, Drooghaag X, Münstedt H (2010) Thermorheological behavior of various short-and long-chain branched polyethylenes and their correlations with the molecular structure. Macromolecules 43(17):7341–7350. https://doi.org/10.1021/ma100705f
Dordinejad AK, Jafari SH (2013) A qualitative assessment of long chain branching content in LLDPE , LDPE and their blends via thermorheological analysis. Appl Polym Sci 1–11. https://doi.org/10.1002/app.39560
Stadler FJ, Gabriel C, Mu H (2007) Influence of short-chain branching of polyethylenes on the temperature dependence of rheological properties in shear. Macromol Chem Phys 208:2449–2454. https://doi.org/10.1002/macp.200700267
Jeong SH, Kim JM, Baig C (2017) Rheological influence of short-chain branching for polymeric materials under shear with variable branch density and branching architecture. Macromolecules. https://doi.org/10.1021/acs.macromol.7b00544
Cheng JJ, Polak MA, Penlidis A (2011) Influence of micromolecular structure on environmental stress cracking resistance of high density polyethylene. Tunn Undergr Sp Technol 26:582–593. https://doi.org/10.1016/j.tust.2011.02.003
Lustiger A (1983) Importance of tie molecules in preventing polyethylene fracture under long-term loading conditions. Polymer (Guildf) 24:1647–1654
Fawaz J, Deveci S, Mittal V (2016) Molecular and morphological studies to understand slow crack growth (SCG) of polyethylene. Colloid Polym Sci 294(8):1269–1280. https://doi.org/10.1007/s00396-016-3888-5
Brown N (1983) The influence of morphology and molecular weight on ductile-brittle transitions in linear polyethylene. J Mater Sci 18:1405–1420
Gholami F, Pircheraghi G, Rashedi R, Sepahi A (2019) Correlation between isothermal crystallization properties and slow crack growth resistance of polyethylene pipe materials 80(September)
Krishnaswamy RK, Yang Q, Fernandez-Ballester L, Kornfield JA (2008) Effect of the distribution of short-chain branches on crystallization kinetics and mechanical properties of high-density polyethylene. Macromolecules 41(5):1693–1704. https://doi.org/10.1021/ma070454h
McCarthy M, Deblieck R (2008) New accelerated method to determine slow crack growth behaviour of polyethylene pipe materials. [Online]. Available: http://www.ppxiv.com/posters/mccarthy_poster.pdf
Deguela R (2007) On the natural draw ratio of semi-crystalline polymers : review of the mechanical, physical and molecular aspects. Macromol Mater Eng 292:235–244. https://doi.org/10.1002/mame.200600389
Deveci S, Kaliappan SK, Fawaz J, Gadgoli U, Das B (2018) Sensitivity of post yield axial deformation properties of high-density ethylene/α-olefin copolymers in relation to molecular structure and slow crack growth resistance. Polym Test. https://doi.org/10.1016/j.polymertesting.2018.10.032
Deslauriers PJ, Lamborn MJ, Fodor JS (2018) Correlating polyethylene microstructure to stress cracking correlations to post yield tensile tests. Polymer (Guildf) 153:1–16. https://doi.org/10.1016/j.polymer.2018.08.023
Lorenzo AT, Arnal L, Albuerne J, Mu AJ (2007) DSC isothermal polymer crystallization kinetics measurements and the use of the Avrami equation to fit the data : Guidelines to avoid common problems. Polym Test 26:222–231. https://doi.org/10.1016/j.polymertesting.2006.10.005
Gholami F, Pircheraghi G, Sarafpour A (2020) Long-term mechanical performance of polyethylene pipe materials in presence of carbon black masterbatch with different carriers. Polym Test 91(June):106857. https://doi.org/10.1016/j.polymertesting.2020.106857
Müller AJ, Hernández ZH, Arnal ML, Sánchez JJ (1997) Successive self-nucleation/annealing (SSA): A novel technique to study molecular segregation during crystallization. Polym Bull 39(4):465–472. https://doi.org/10.1007/s002890050174
Eslamian GPM, Bagheri R (2016) Co-crystallization in Ternary PE Blends: Tie Crystal Formation and Mechanical Properties Improvement. Polym Int 65(12):1405–1416
Pavia DL, Lampman GM, Kriz GS, Vyvyan JR (2015) Introduction to spectroscopy
Qing Zhang PC (2009) An effective method to identify the type and content of a-olefin in polyolefine copolymer by Fourier Transform Infrared-Differential Scanning Calorimetry. J Appl Polym Sci 113(5):3027–3032. https://doi.org/10.1002/app
Zhou H, Wilkes GL (1997) Comparison of lamellar thickness and its distribution determined from d.s.c., SAXS, TEM and AFM for high-density polyethylene films having a stacked lamellar morphology. Polymer (Guildf) 38(23):5735–5747. https://doi.org/10.1016/S0032-3861(97)00145-6
Mavridis H, Meier G, Schueller U, Doetsch D, Marczinke B, Vittorias I (2014) Polyethylene processes and compositions thereof, US9023945B2
Avrami M (1939) Kinetics of phase change. I. General theory. J Chem Phys 1103(July):1103–1112. https://doi.org/10.1063/1.1750380
Avrami M (1940) Kinetics of phase change. II. Transformation-time relations for random distribution of nuclei. J Chem Phys 8(December):212–224. https://doi.org/10.1063/1.1750631
Avrami M (1941) Granulation, phase change, and microstructure kinetics of phase change. III. J Chem Phys 9(Agust):177–184. https://doi.org/10.1063/1.1750872
Krumme A, Lehtinen A, Viikna A (2004) Crystallisation behaviour of high density polyethylene blends with bimodal molar mass distribution 1. Basic characteristics and isothermal crystallisation. Eur Polym J 40(2):359–369. https://doi.org/10.1016/j.eurpolymj.2003.10.005
Sarafpour A, Pircheraghi G, Rashedi R, Afzali K (2018) Correlation between isothermal crystallization and morphological/rheological properties of bimodal polyethylene/carbon black systems. Polym Cryst 1(3):1–11. https://doi.org/10.1002/pcr2.10014
Hosoda S (1988) Structural distribution of linear low-density polyethylenes. Polym J 20(5):383–397. https://doi.org/10.1295/polymj.20.383
Han CD (2007) Rheology and processing of polymeric materials: Polymer rheology, vol. 1
Morison FA (2001) Understanding rheology
Larson RG (1999) The structure and rheology of complex fluids
Gahleitner M (2001) Melt rheology of polyolefins. Prog Polym Sci 26:895–944
Van Gurp M, Palmen J (1998) Time-temperature superposition for polymeric blends. Rheol Bull 67(1):5–8
van Ruymbeke E, Stéphenne V, Daoust D, Godard P, Keunings R, Bailly C (2005) A sensitive method to detect very low levels of long chain branching from the molar mass distribution and linear viscoelastic response. J Rheol (NYNY) 49(6):1503–1520. https://doi.org/10.1122/1.2048743
Vega JF, Santamarı A (1998) Small-amplitude oscillatory shear flow measurements as a tool to detect very low amounts of long chain branching in polyethylenes. Macromolecules 31(October):3639–3647
Sardashti P, Stewart KME, Polak M, Tzoganakis C, Penlidis A (2019) Operational maps between molecular properties and environmental stress cracking resistance. J Appl Polym Sci 136(4):1–10. https://doi.org/10.1002/app.47006
Fodor JS, Lamborn MJ, Deslauriers PJ (2018) Correlating polyethylene microstructure to stress cracking: Development of primary structure parameters. Polymer (Guildf) 147:8–19. https://doi.org/10.1016/j.polymer.2018.05.064.This
Jandaghian MH (2021) Effects of polymerization parameters on the slow crack growth resistance and rheological properties of bimodal polyethylene resins. Appl Polym Sci 51867(October):1–10. https://doi.org/10.1002/app.51867
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Haghparast, S., Pircheraghi, G. & Houshmandmoayed, S. Effects of molecular structure on thermal, rheological and mechanical properties of drip irrigation PE tapes. J Polym Res 29, 419 (2022). https://doi.org/10.1007/s10965-022-03255-4
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DOI: https://doi.org/10.1007/s10965-022-03255-4