Structure and characteristics of the hot pressed hydroxyapatite/poly-L-lactide composite

2002
Authors
Ignjatović, Nenad
Suljovrujić, Edin H.

Stojanović, Z.
Uskoković, Dragan

Contributors
Ristić, Momčilo M.Article (Published version)
Metadata
Show full item recordAbstract
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 pressingSource:
Science of Sintering, 2002, 34, 1, 79-93Publisher:
- Belgrade : International Institute for the Science of Sintering
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - 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 .