Effects of bivalve shell particles of hyriopsis cumingii on the performances of epoxy resin studied by positron annihilation

✍ Scribed by Xudong Sun; Minfeng Zeng; Yun Wang; Genzhong Ji; Xiandong Yao; Yongmiao Shen; Ning Chen; Fengyuan Yan; Baoyi Wang; Chenze Qi3

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 200 KB
• Volume: 109
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.28627

✦ Synopsis

Abstract

Mussel shell particles sized in micrometer level have been prepared with a ball mill. The X‐ray powder diffractrometer (XRD) and Fourier transform infrared (FTIR) results proved that the shell particles contained mainly CaCO~3~ in the form of aragonite, together with small amount of organic phase. EP modified with shell particles showed a much rougher fracture surface than unfilled EP. The mechanical properties have been improved obviously by adding the shell particles in EP from 1% to 5%. The particle would occupy a number of free volume holes of the EP matrix. This would lead to a decrease in the total free volume concentration of the composites. The particles acted as a bridge to make more molecules interconnected for the good interfacial adhesion, resulting in a reduction of the free volume hole size in the interfacial layers. I~2~ reached its highest value when 3% shell particles were added and then decreased as the shellparticles content increased. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008