Rheology and melt fracture of poly(lactides)
The wall slip and melt fracture behaviour of several commercial polylactides (PLAs) have been investigated. PLAs with molecular weights greater than a certain value were found to slip, with the slip velocity to increase with decrease of molecular weight. The onset of melt fracture for the high molec...
| Main Authors: | , , , |
|---|---|
| Format: | Book Section |
| Published: |
Society of Plastics Engineers (SPE)
2012
|
| Subjects: |
| _version_ | 1796857462075162624 |
|---|---|
| author | Othman, Norhayani Jazrawi, B. Mehrkhodavandi, P. Hatzikiriakos, S. G. |
| author_facet | Othman, Norhayani Jazrawi, B. Mehrkhodavandi, P. Hatzikiriakos, S. G. |
| author_sort | Othman, Norhayani |
| collection | ePrints |
| description | The wall slip and melt fracture behaviour of several commercial polylactides (PLAs) have been investigated. PLAs with molecular weights greater than a certain value were found to slip, with the slip velocity to increase with decrease of molecular weight. The onset of melt fracture for the high molecular weight PLAs was found to occur at around 0.2 to 0.3 MPa, depending on the geometrical characteristics of the dies. Addition of 0.5wt% of a poly(e-caprolactone) (PCL) into the PLA that exhibits melt fracture was found to be effective in eliminating and delaying the onset of melt fracture to higher shear rates. |
| first_indexed | 2024-03-05T18:58:08Z |
| format | Book Section |
| id | utm.eprints-35818 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:58:08Z |
| publishDate | 2012 |
| publisher | Society of Plastics Engineers (SPE) |
| record_format | dspace |
| spelling | utm.eprints-358182017-02-04T05:55:50Z http://eprints.utm.my/35818/ Rheology and melt fracture of poly(lactides) Othman, Norhayani Jazrawi, B. Mehrkhodavandi, P. Hatzikiriakos, S. G. TP Chemical technology The wall slip and melt fracture behaviour of several commercial polylactides (PLAs) have been investigated. PLAs with molecular weights greater than a certain value were found to slip, with the slip velocity to increase with decrease of molecular weight. The onset of melt fracture for the high molecular weight PLAs was found to occur at around 0.2 to 0.3 MPa, depending on the geometrical characteristics of the dies. Addition of 0.5wt% of a poly(e-caprolactone) (PCL) into the PLA that exhibits melt fracture was found to be effective in eliminating and delaying the onset of melt fracture to higher shear rates. Society of Plastics Engineers (SPE) 2012 Book Section PeerReviewed Othman, Norhayani and Jazrawi, B. and Mehrkhodavandi, P. and Hatzikiriakos, S. G. (2012) Rheology and melt fracture of poly(lactides). In: Annual Technical Conference - ANTEC, Conference Proceedings. Society of Plastics Engineers (SPE), Newtown, USA, pp. 1170-1174. ISBN 978-162276083-1 |
| spellingShingle | TP Chemical technology Othman, Norhayani Jazrawi, B. Mehrkhodavandi, P. Hatzikiriakos, S. G. Rheology and melt fracture of poly(lactides) |
| title | Rheology and melt fracture of poly(lactides) |
| title_full | Rheology and melt fracture of poly(lactides) |
| title_fullStr | Rheology and melt fracture of poly(lactides) |
| title_full_unstemmed | Rheology and melt fracture of poly(lactides) |
| title_short | Rheology and melt fracture of poly(lactides) |
| title_sort | rheology and melt fracture of poly lactides |
| topic | TP Chemical technology |
| work_keys_str_mv | AT othmannorhayani rheologyandmeltfractureofpolylactides AT jazrawib rheologyandmeltfractureofpolylactides AT mehrkhodavandip rheologyandmeltfractureofpolylactides AT hatzikiriakossg rheologyandmeltfractureofpolylactides |