Synthesis and Characterization of Composite Materials HDPE/HA and PMMA/HA Prepared by Sonochemistry

Abstract

Summary: In the present work, the synthesis and characterization of composite materials based on HDPE, and PMMA with nanometric hydroxyapatite, are studied. Composites preparation was carried out by dilutions of the commercial polymers, using decaline as solvent for the polyolefin and 2-butanone for PMMA. In the synthesis of Hydroxyapatite (HA), ammonium phosphate [(NH 4 ) 2 HPO 4 ] and calcium hydroxide [Ca(OH) 2 ] were used as precursors. Composites with 20, 30 and 40 wt% of HA were prepared. The polymer dilutions and the precursors of the HA were placed simultaneously in a reactor under ultrasonic radiation at 20 kHz, for periods of 15, 25 and 35 min. The products obtained were characterized by FTIR, TGA, TEM, XRD and biocompatibility studies were also carried out. The results showed the presence of nanometric HA and clear interactions between HA and PMMA polymers were observed by FTIR. These results were corroborated by TEM showing that nanometric HA particles are encapsulated into the polymeric PMMA matrix. For the composites of HDPE, these interactions were not observed.

Synthesis and Preliminary Evaluation of a Polyolefin-based Core for Carrier-based Root Canal Obturation

“…HA/PE composites can be rendered flexible, can be tailored to exhibit desirable flow properties (14)(15)(16), and are biocompatible (17)(18)(19)(20); thus, they can be excellent candidates for designing carriers for carrier-based obturation systems. HA is used in conjunction with strontium oxide (SrO) to achieve adequate radiopacity as required for a carrier material, and the quantity of the ceramic filler assists in the ability to tailor the flexibility of the carriers.…”

Injection‐molded high‐density polyethylene–hydroxyapatite–aluminum oxide hybrid composites for hard‐tissue replacement: Mechanical, biological, and protein adsorption behavior

“…This clearly suggested a strong bond between the ceramic filler and the polymer matrix, which possibly was facilitated in the presence of the coupling agent. It has been already reported that coupling agents improve the dispersion and bonding of ceramic fillers in the polymer matrix 32, 33…”

“…It has been already reported that coupling agents improve the dispersion and bonding of ceramic fillers in the polymer matrix. 32,33 In vitro biocompatibility properties…”

HDPE/ZnO ve HDPE/Hidroksiapatit Nanokompozitlerin Termal ve Morfolojik Özelliklerinin İncelenmesi

“…Parra ve ark. [22], yüksek frekanslı ultrasonik radyasyon kullanarak HDPE ve poli (metil metakrilat) (PMMA) bazlı kompozit malzemeleri nanometrik HAp ile sentezlemiş, karakterize etmiş ve biyouyumluluklarını araştırmıştır. Fouad ve ark.…”