Effect of moulding and extruding conditions on mechanical properties of poly(D,L-lactide) and MDI chain-extending poly(D,L-lactide)/hydroxyapatite composite / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 624-627, 2002.
Article
in Chinese
| WPRIM
| ID: wpr-340951
ABSTRACT
In this paper, poly(D,L-lactide) (PDLLA), MDI chain-extending poly(D,L-lactide) (PDLLA/MDI) and MDI chain-extending poly(D,L-lactide)/hydroxyapatite composite (PDLLA/HA/MDI) were prepared respectively and the effects of moulding and extruding conditions on their mechanical properties were also investigated. At the optimal conditions, bending strength of PDLLA and PDLLA/MDI is 35.1 MPa and 51.3 MPa, respectively, and their bending modulus is 2413.6 MPa and 1830.9 MPa, respectively. Bending strength of PDLLA/HA and PDLLA/HA/MDI is 31.2 MPa and 55.4 MPa, respectively, and their bending modulus is 1735.0 MPa and 2068.5 MPa, respectively. These results have shown that the mechanical properties of PDLLA/MDI and PDLLA/HA/MDI have enhanced significantly by MDI chain-extending.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Polyesters
/
Biocompatible Materials
/
Chemistry
/
Medical Laboratory Science
/
Durapatite
/
Mechanics
/
Methods
Language:
Chinese
Journal:
Journal of Biomedical Engineering
Year:
2002
Type:
Article
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