The Effect of CaSiO3 Nano-Particles Reinforced Denture Polymethyl Methacrylate

Advanced Composites Letters

Article

Xin-Jing Zhang¹  Xiu-Yin Zhang¹  Chen Qian¹  Bang-Shang Zhu²  Kai-Li Lin³  Jiang Chang³ 

[1] Department of dental prosthodontics, Ninth People's Hospital, School of Medicine of Shanghai Jiao Tong University, Shanghai, P. R. China;Instrumental Analysis Centre of Shanghai Jiao Tong University, Shanghai, P. R. China;Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, P. R. China;

关键词: CaSiO nano-particles;    Polymethyl methacrylate (PMMA);    silane coupling agent;    flexural strength;    Knoop hardness;   

DOI  :  10.1177/096369351102000102

 received in 2010-07-21, accepted in 2010-07-29,  发布年份 2011

来源: Sage Journals

【 摘 要 】

The preparation of CaSiO3–PMMA nanocomposite denture matrix was reported. We investigated the optimal amount of CaSiO3 nano-particles modified by silane coupling agent (Z-6030) on strengthen flexural strength and surface hardness (Knoop hardness) of the nano-CaSiO3/PMMA composite materials. The results indicated that the 1.5% CaSiO3 nano-particles could enable the nanocomposite to have the maximum flexural strength (90.50±4.86) MPa(increasing nearly 40% contrast to the blank group), while 2.0% CaSiO3 nano-particles made the nanocomposite to have a maximum Knoop hardness(24.59±0.98) MPa (augmenting with 24% compared with the blank group). Furthermore, the fracture surface was investigated by scanning electron microscope (SEM), which revealed that the silane coupling agent (Z-6030) affected the dispersion of the CaSiO3 nano-particles in PMMA matrix, and the fracture surface of the 1.5% group is regular with obvious ductile dimple pattern demonstrating typical ductile fracture.

【 授权许可】

Unknown   
© 2011 SAGE Publications Ltd

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