TY - GEN
T1 - Mechanical properties of dental nanocomposites reinforced with polyhedral oligomeric silsesquioxane(POSS)
AU - Wu, Xiaorong
AU - Xie, Weili
AU - Sun, Yi
AU - Sun, Shouhua
PY - 2009
Y1 - 2009
N2 - The objective of this study was to incorporate POSS-MA into the polymeric matrix to develop a new kind of nanocomposite. The effect of different weight percentage of POSS incorporated into the matrix on the mechanical properties was also evaluated. Infrared spectroscopic technique and X-ray diffraction were used to characterize their microstructures and double bond conversion. With only 2wt% POSS added, the nanocomposite's flexural strength increased 15%, compressive strength increased 12%, hardness increased 15% and uncommonly, even the toughness of resins obviously increased. With 5wt% POSS polymerized, compressive strength increased from 192MPa to 251MPa and compressive modulus increased from 3.93GPa to 6.62GPa, but flexure strength began to decline from 87MPa to 75MPa. The nanocomposites incorporated with POSS showed greatly improved mechanical properties, and increased wear resistance and service life. The mechanism of reinforcement was also discussed. Mechanical properties. Dental nanocomposites. Polyhedral oligomeric silsesquioxane (POSS). Characterization.
AB - The objective of this study was to incorporate POSS-MA into the polymeric matrix to develop a new kind of nanocomposite. The effect of different weight percentage of POSS incorporated into the matrix on the mechanical properties was also evaluated. Infrared spectroscopic technique and X-ray diffraction were used to characterize their microstructures and double bond conversion. With only 2wt% POSS added, the nanocomposite's flexural strength increased 15%, compressive strength increased 12%, hardness increased 15% and uncommonly, even the toughness of resins obviously increased. With 5wt% POSS polymerized, compressive strength increased from 192MPa to 251MPa and compressive modulus increased from 3.93GPa to 6.62GPa, but flexure strength began to decline from 87MPa to 75MPa. The nanocomposites incorporated with POSS showed greatly improved mechanical properties, and increased wear resistance and service life. The mechanism of reinforcement was also discussed. Mechanical properties. Dental nanocomposites. Polyhedral oligomeric silsesquioxane (POSS). Characterization.
UR - https://www.scopus.com/pages/publications/74049133902
U2 - 10.4028/www.scientific.net/AMR.79-82.345
DO - 10.4028/www.scientific.net/AMR.79-82.345
M3 - 会议稿件
AN - SCOPUS:74049133902
SN - 0878493042
SN - 9780878493043
T3 - Advanced Materials Research
SP - 345
EP - 348
BT - Multi-Functional Materials and Structures II
T2 - 2nd International Conference on Multi-Functional Materials and Structures, MFMS-2009
Y2 - 9 October 2009 through 12 October 2009
ER -