Skip to main content
SpringerLink
Log in

Morphologies of long chain branched isotactic polypropylene crystallized from melt

  • Short communication
  • Published:
Colloid and Polymer Science Aims and scope Submit manuscript

Abstract

The crystallization behavior and resulting crystalline morphologies of long chain branched isotactic polypropylene (LCBPP) under different conditions were studied by means of differential scanning calorimetry and transmission electron microscopy combined with electron diffraction. The results indicate that the crystallization of LCBPP during fast cooling process, or at lower crystallization temperature, leads to the formation of mainly edge-on lamellar structures. The LCBPP exhibits also the wide angle lamellar branching frequently observed for linear isotactic polypropylene. Crystallizing LCBPP in temperature range of 110∼140 °C results in the formation of both edge-on and flat-on crystals, which coexist side by side with the content of flat-on crystals increases with increasing crystallization temperature. At high crystallization temperature, e.g. 145 °C, flat-on crystals with chain axis aligned perpendicular to the film plane are the only observed morphology. Moreover, the crystals of LCBPP grow slower than its linear counterpart and the crystal growth rates of both linear and long branched PPs are temperature dependent.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

References

  1. Padden FJ Jr, Keith HD (1959) J Appl Phys 30:1479

    Article  CAS  Google Scholar 

  2. Padden FJ Jr, Keith HD (1966) J Appl Phys 37:4013

    Article  CAS  Google Scholar 

  3. Padden FJ Jr, Keith HD (1973) J Appl Phys 44:1217

    Article  CAS  Google Scholar 

  4. Khoury F (1966) J Res Natl Bur Stand A70:29

    CAS  Google Scholar 

  5. Binsbergen FL, DeLange BGM (1968) Polymer 9:23

    Article  CAS  Google Scholar 

  6. Lovinger AJ, Chua JO, Gryte CC (1977) J Polym Sci Polym Phys Edn 15:641

    CAS  Google Scholar 

  7. Lovinger AJ (1983) J Polym Sci Polym Phys Edn 21:97

    CAS  Google Scholar 

  8. Norton DR, Keller A (1985) Polymer 26:704

    Article  CAS  Google Scholar 

  9. Bassett DC, Vaughan AS (1985) Polymer 26:717

    Article  CAS  Google Scholar 

  10. Lotz B (2002) J Macromol Sci Phys B41:685

    Article  CAS  Google Scholar 

  11. Turner-Jones A, Cobbold AJ (1968) J Polym Sci B6:539

    Article  CAS  Google Scholar 

  12. Morrow DR, Newman BA (1968) J Appl Phys 39:4944

    Article  CAS  Google Scholar 

  13. Bruckner S, Meille SV (1989) Nature (London) 340:455

    Article  CAS  Google Scholar 

  14. Meille SV, Bruckner S, Porzio W (1990) Macromolecules 23:4114

    Article  CAS  Google Scholar 

  15. Lotz B, Graff S, Straupe C, Wittmann JC (1991) Polymer 32:2902

    Article  CAS  Google Scholar 

  16. Platz C (2001) In: Presented at the International Conference on Polyolefins, Houston, TX

  17. McDonald JN (1989) Thermoforming. In: Encyclopedia of polymer science and engineering, vol 16. Wiley, New York, pp 807

  18. Roovers J (1991) Macromolecules 24:5895

    Article  CAS  Google Scholar 

  19. Kokko E, Malmberg A, Lehmus P, Lofgern B, Seppala JV (2000) J Polym Sci Part A Polym Chem 38:376

    Article  CAS  Google Scholar 

  20. Lu B, Chung TC (1999) Macromolecules 32:8678

    Article  CAS  Google Scholar 

  21. Weng W, Marke EJ, Dekmezian AH (2000) Macromol Rapid Commun 21:103

    Article  Google Scholar 

  22. Weng W, Marke EJ, Dekmezian AH (2001) Macromol Rapid Commun 22:1488

    Article  CAS  Google Scholar 

  23. Weng W, Hu W, Dekmezian AH, Ruff CJ (2002) Macromolecules 35:3838

    Article  CAS  Google Scholar 

  24. Agarwal PK, Somani RH, Weng WQ, Mehta A, Yang L, Ran SF, Liu LZ, Hsiao BS (2003) Macromolecules 36:5226

    Article  CAS  Google Scholar 

  25. Ye ZB, Zhu SP (2003) J Polym Sci Part A Polym Chem 41:1152

    Article  CAS  Google Scholar 

  26. Petermann J, Gleiter H (1975) Philos Mag 31:929

    Article  CAS  Google Scholar 

  27. Miles JM, Petermann J (1979) J Macromol Sci Phys B 16:243

    Article  Google Scholar 

  28. Lotz B, Wittmann JC (1986) J Polym Sci Part B Polym Phys 24:1541

    Article  CAS  Google Scholar 

  29. Lotz B, Wittmann JC, Lovinger AJ (1996) Polymer 37:4979

    Article  CAS  Google Scholar 

Download references

Acknowledgements

The financial support of the CAS (No. KJCX2-SW-H07), the 973 program (No.2003CB615600), and National Natural Science Foundation of China is gratefully acknowledged.

Author information

Authors and Affiliations

  1. State Key Laboratory of Polymer Physics and Chemistry, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100080, China

    Wei Zeng, Jijun Wang & Shouke Yan

  2. CAS Key Laboratory of Plastic Engineering, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100080, China

    Zoujun Feng & Jin-Yong Dong

Authors
  1. Wei Zeng
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Jijun Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Zoujun Feng
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Jin-Yong Dong
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Shouke Yan
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Shouke Yan.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Zeng, W., Wang, J., Feng, Z. et al. Morphologies of long chain branched isotactic polypropylene crystallized from melt. Colloid Polym Sci 284, 322–326 (2005). https://doi.org/10.1007/s00396-005-1371-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00396-005-1371-9

Keywords

Search

Navigation