A rapid quantitative method for determination of short chain branching content and branching distribution index in LLDPEs by DSC

Polymer Testing

Volumn 28, Issue 8, 2009, Pages 866-870

  Torabi, S R ^b   Fazeli, N ^a  

^a ISLAMIC AZAD UNIVERSITY   (Iran)

^b YAZD UNIVERSITY   (Iran)

Author keywords

Branching distribution index; Differential scanning calorimetry; LLDPE; Short chain branching; Short chain branching distribution

Indexed keywords

BRANCHING DISTRIBUTION INDEX; BRANCHING STRUCTURES; DISTRIBUTION INDEX; ETHYLENE/1-BUTENE; LLDPE; MOMENT EQUATIONS; QUANTITATIVE DETERMINATIONS; QUANTITATIVE METHOD; SHORT CHAIN BRANCHING; SHORT CHAIN BRANCHING DISTRIBUTION; SHORT CHAIN BRANCHINGS;

BUTENES; HYDROCARBONS;

DIFFERENTIAL SCANNING CALORIMETRY;

EID: 70349305106     PISSN: 01429418     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.polymertesting.2009.07.009     Document Type: Article

References (31)

1. Hosoda S., and Uemura A. Effect of the structural distribution on the mechanical properties of LLDPEs. Polymer J. 24 9 (1992) 939
2. Simanke A.G., Galland G.B., Baumhardt R., Quijada R., and Mauler R.S. Influence of the type and the comonomer contents on the mechanical behavior of ethylene/α-olefin copolymers. J. Appl. Polymer Sci. 74 (1999) 1194
3. Gelfer M.Y., and Winter H.H. Effect of branch distribution on rheology of LLDPE during early stages of crystallization. Macromolecules 32 (1999) 8974
4. Simon L.C., Desouza R.F., Soares J.B.P., and Mauler R.S. Effect of molecular structure on dynamic mechanical properties of PE obtained with nickel-diamine catalysts. Polymer 42 (2001) 4885
5. Fazeli N., Arabi H., and Bolandi Sh. Effect of branching characteristics of ethylene/1-butene copolymers on melt flow index. Polymer Test. 25 (2006) 28
6. Soares J.B.P., Abbott R.F., and Kim J.D. Environmental stress cracking resistance of PE: the use of CRYSTAF and SEC to establish structure-property relationships. J. Polymer Sci. B Polymer Phys. 38 (2000) 1267
7. Zhang M., and Wanke S.E. Quantitative determination of short-chain branching content and distribution in commercial polyethylenes by thermally fractionated DSC. Polymer Eng. Sci. 43 12 (2003) 1878
8. Shan C.L.P., deGroot W.A., Hazlitt L.G., and Gillespie D. A new turbidimetric approach to measuring polyethylene short chain branching distribution. Polymer 46 (2005) 11755
9. Randall J.C. Carbon-13 NMR of ethylene-1-olefin copolymers: extension to the short-chain branch distribution in a low-density polyethylene. J. Polymer Sci. B Polymer Phys. 11 (1973) 275
10. Bugada D.C., and Rudin A. Branching in LDPE by CNMR. Eur. Polymer J. 23 10 (1987) 809
11. Hansen E.W., Blom R., and Bade O.M. NMR characterization of PE with emphasis on internal consistency of peak intensities and estimation of uncertainties in derived branch distribution numbers. Polymer 38 17 (1997) 4295
12. Jurkiewicz A., Eilerts N.W., and Hsieh E.T. CNMR characterization of short chain branches of Nickel catalyzed PE. Macromolecules 32 17 (1999) 5471
13. Wild L. Temperature rising elution fractionation. Adv. Polymer Sci. (1990) 1
14. Monrabal B. CRYSTAF: a new technique for the analysis of branching distribution in polyolefins. J. Appl. Polymer Sci. 52 (1994) 491
15. Monrabal B. CRYSTAF: crystallization analysis fractionation. A new approach to the composition analysis of semi-crystalline polymers. Macromol. Symp. 110 (1996) 81
16. Monrabal B., Blanco J., Nieto J., and Soares J.B.P. Characterization of homogeneous ethylene/1-octene copolymers made with a single-site catalyst. CRYSTAF analysis and calibration. J. Polymer Sci. Polymer Chem. 37 (1999) 89
17. Britto L.J.D., Soares J.B.P., Penlidis A., and Monrabal B. Polyolefin analysis by single-step crystallization fractionation. J. Polymer Sci. B Polymer Phys. 37 (1999) 539
18. Anantawaraskul S., Soares J.B.P., Wood-adams P.M., and Monrabal B. Effect of Mw and average comonomer content on the CRYSTAF of ethylene α-olefin copolymers. Polymer 44 (2003) 2393
19. Anantawaraskul S., Soares J.B.P., and Wood-adams P.M. Effect of operation parameters on TREF and CRYSTAF. J. Polymer Sci. B Polymer Phys. 41 (2003) 1762
20. Vandermiers C., Moulin J.F., Damman P., and Dosiere M. Characterization of molecular heterogeneities of LLDPE by multiple crystallization-dissolution steps. Polymer 41 (2000) 2915
21. Hosoda S. Structural distribution of LLDPEs. Polymer J. 20 5 (1988) 383
22. Wild L., Chang S., and Shankernarayanan M.J. Improved method for compositional analysis of polyolefins by DSC. Polymer Prepr. 31 (1990) 270
23. Karbashewski E., Kale L., Rudin A., Tchir W.J., Cook D.G., and Pronouost J.O. Characterization of LLDPE by TREF and DSC. J. Appl. Polymer Sci. 44 (1992) 425
24. Adisson E., Ribeiro M., Deffieux A., and Fontanille M. Evaluation of the heterogeneity in LLDPE co-monomer unit distribution by DSC characterization of thermally treated samples. Polymer 33 20 (1992) 4337
25. Starck P. Studies of the comonomer distributions in LDPE using TREF and stepwise crystallization by DSC. Polymer Int. 40 (1996) 111
26. Starck P., Lehmus P., and Seppala J.V. Thermal characterization of ethylene polymers prepared with metallocene catalysts. Polymer Eng. Sci. 39 (1999) 1444
27. Zhang M., Lynch D.T., and Wanke S.E. Characterization of commercial LLDPE by TREF-DSC and TREF-SEC cross-fractionation. J. Appl. Polymer Sci. 75 (2000) 960
28. Zhang M., Lynch D.T., and Wanke S.E. Effect of molecular structure distribution on melting and crystallization behavior of 1-butene/ethylene copolymers. Polymer 42 (2001) 3067
29. Cran M.J., Bigger S.W., and Scheirs J. Characterizing blends of LLDPE and LDPE by DSC. J. Therm. Anal. Calorim. 81 (2005) 321
30. Razavi-Nouri M. Studies of comonomer distributions and molecular segregations in metallocene-prepared polyethylenes by DSC. Polymer Test. 25 (2006) 1052
31. Chen F., Shanks R.A., and Amarasinghe G. Crystallisation of single-site polyethylene blends investigated by thermal fractionation techniques. Polymer 42 (2001) 4579