Characterization of acrylic bone cement using dynamic mechanical analysis.
Dynamic mechanical analysis (DMA) was used to characterize the properties of acrylic bone cement with the addition of tricalcium phosphate (TCP), hydroxyethyl methacrylate (HEMA), and ethylene glycol dimethacrylate (EGDMA). The glass transition temperature of acrylic bone cement is >100 degrees C; the cement has a flat modulus response near human body temperature. The height of the damping peak decreases and becomes broader with increasing TCP content. Thus, TCP is incompatibile with acrylic bone cement. When the frequency is changed from high to low, the damping peak shifts to low temperature. The shift in damping peak with frequency indicates that this relaxation is time-dependent. When acrylic bone cement contains TCP with HEMA and EGDMA, the incompatibility between acrylic bone cement and TCP can be ameliorated.
Department of Chemical Engineering, Chang Gung University, Tao-Yuan, Taiwan, Republic of China. jmyang@cguaplo.cgu.edu.tw
J M
JM
Yang
H M
HM
Li
M C
MC
Yang
C H
CH
Shih
D001672:Biocompatible Materials; D001831:Body Temperature; D001843:Bone Cements / Q000737:chemistry*; D002130:Calcium Phosphates / Q000737:chemistry*; D004355:Drug Stability; D005898:Glass; D006801:Humans; D008689:Methacrylates / Q000737:chemistry*; D013314:Stress, Mechanical; D013696:Temperature; D013816:Thermodynamics
D001672:Biocompatible Materials; D001843:Bone Cements; D002130:Calcium Phosphates; D008689:Methacrylates; C485828:alpha-tricalcium phosphate; C485830:tetracalcium phosphate; C005044:hydroxyethyl methacrylate; C485838:calcium phosphate, monobasic, anhydrous; C004919:ethylene dimethacrylate; C020243:calcium phosphate; C485829:calcium phosphate, dibasic, anhydrous