Hydroxyapatite/poly-L-lactide (HAp/PLL) composite biomaterial can be obtained by different processing methods. Three-dimensional blocks of HAp/PLLA composite biomaterial with mechanical characteristics close to the natural bone tissue can be obtained by hot pressing procedure. Effects of synthesis and compacting on the structure and characteristics of the HAp/PLLA composite biomaterial were studied in this work. Using wade angle X-ray structural analyses (WAXS), differentially scanning calorimetry (DSC), thermogravimetric analysis (TGA) and infrared (IR) spectroscopy, the changes occurring in the material during synthesis and hot pressing were monitored. Surface microstructure was analyzed by scanning electronic microscopy (SEM) coupled with electron-dispersion analysis (EDX). The results obtained indicate a possible decrease in the degree of crystallinity with hot pressing time increase. A block of HAp/PLLA composite biomaterial with 1.6 times lower crystallinity of the polymer phase ...was obtained by hot pressing in a given time interval with a maximum of 60 minutes. Results of TG analysis show that PLLA stability decreases with increasing hot pressing time, and vice versa. IR study proved that neither destructive changes in constituents nor formation of new phases occurred during hot pressing.
Keywords:
composite biomaterials / hydroxyapatite and poly-L-lactide / structure / crystallinity / differentially scanning calorimetry / thermogravimetric analysis / infrared spectroscopy / WAXS / scanning electron microscopy / hot pressing
Source:
Science of Sintering, 2002, 34, 1, 79-93
Publisher:
Belgrade : International Institute for the Science of Sintering
TY - JOUR
AU - Ignjatović, Nenad
AU - Suljovrujić, Edin H.
AU - Stojanović, Z.
AU - Uskoković, Dragan
PY - 2002
UR - https://dais.sanu.ac.rs/123456789/234
AB - Hydroxyapatite/poly-L-lactide (HAp/PLL) composite biomaterial can be obtained by different processing methods. Three-dimensional blocks of HAp/PLLA composite biomaterial with mechanical characteristics close to the natural bone tissue can be obtained by hot pressing procedure. Effects of synthesis and compacting on the structure and characteristics of the HAp/PLLA composite biomaterial were studied in this work. Using wade angle X-ray structural analyses (WAXS), differentially scanning calorimetry (DSC), thermogravimetric analysis (TGA) and infrared (IR) spectroscopy, the changes occurring in the material during synthesis and hot pressing were monitored. Surface microstructure was analyzed by scanning electronic microscopy (SEM) coupled with electron-dispersion analysis (EDX). The results obtained indicate a possible decrease in the degree of crystallinity with hot pressing time increase. A block of HAp/PLLA composite biomaterial with 1.6 times lower crystallinity of the polymer phase was obtained by hot pressing in a given time interval with a maximum of 60 minutes. Results of TG analysis show that PLLA stability decreases with increasing hot pressing time, and vice versa. IR study proved that neither destructive changes in constituents nor formation of new phases occurred during hot pressing.
PB - Belgrade : International Institute for the Science of Sintering
T2 - Science of Sintering
T1 - Structure and characteristics of the hot pressed hydroxyapatite/poly-L-lactide composite
SP - 79
EP - 93
VL - 34
IS - 1
DO - 10.2298/SOS0201079
UR - https://hdl.handle.net/21.15107/rcub_dais_234
ER -
@article{
author = "Ignjatović, Nenad and Suljovrujić, Edin H. and Stojanović, Z. and Uskoković, Dragan",
year = "2002",
abstract = "Hydroxyapatite/poly-L-lactide (HAp/PLL) composite biomaterial can be obtained by different processing methods. Three-dimensional blocks of HAp/PLLA composite biomaterial with mechanical characteristics close to the natural bone tissue can be obtained by hot pressing procedure. Effects of synthesis and compacting on the structure and characteristics of the HAp/PLLA composite biomaterial were studied in this work. Using wade angle X-ray structural analyses (WAXS), differentially scanning calorimetry (DSC), thermogravimetric analysis (TGA) and infrared (IR) spectroscopy, the changes occurring in the material during synthesis and hot pressing were monitored. Surface microstructure was analyzed by scanning electronic microscopy (SEM) coupled with electron-dispersion analysis (EDX). The results obtained indicate a possible decrease in the degree of crystallinity with hot pressing time increase. A block of HAp/PLLA composite biomaterial with 1.6 times lower crystallinity of the polymer phase was obtained by hot pressing in a given time interval with a maximum of 60 minutes. Results of TG analysis show that PLLA stability decreases with increasing hot pressing time, and vice versa. IR study proved that neither destructive changes in constituents nor formation of new phases occurred during hot pressing.",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Structure and characteristics of the hot pressed hydroxyapatite/poly-L-lactide composite",
pages = "79-93",
volume = "34",
number = "1",
doi = "10.2298/SOS0201079",
url = "https://hdl.handle.net/21.15107/rcub_dais_234"
}
Ignjatović, N., Suljovrujić, E. H., Stojanović, Z.,& Uskoković, D.. (2002). Structure and characteristics of the hot pressed hydroxyapatite/poly-L-lactide composite. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 34(1), 79-93.
https://doi.org/10.2298/SOS0201079
https://hdl.handle.net/21.15107/rcub_dais_234
Ignjatović N, Suljovrujić EH, Stojanović Z, Uskoković D. Structure and characteristics of the hot pressed hydroxyapatite/poly-L-lactide composite. in Science of Sintering. 2002;34(1):79-93.
doi:10.2298/SOS0201079
https://hdl.handle.net/21.15107/rcub_dais_234 .
Ignjatović, Nenad, Suljovrujić, Edin H., Stojanović, Z., Uskoković, Dragan, "Structure and characteristics of the hot pressed hydroxyapatite/poly-L-lactide composite" in Science of Sintering, 34, no. 1 (2002):79-93,
https://doi.org/10.2298/SOS0201079 .,
https://hdl.handle.net/21.15107/rcub_dais_234 .
