Mechanical and dynamic mechanical properties of degradable polyurethane foams with PEG/PCL mixed soft segments
Polyurethane (PU) with mixed poly(ethylene glycol) /poly(e-caprolactone) (PEG/PCL) soft segments is a representatively kind of degradable polyurethane material. Polyurethane foams (PUF) with mixed PEG/PCL soft segments were synthesized by using one pot method, and their mechanical and dynamic mechanical properties were investigated. Influences of PEG/PCL weight ratio and molecular weight of soft segments on PUFs mechanical and dynamic mechanical properties were studied. The results showed that: with increasing content of PCL, PUFs tensile strength, elongation at break, stress at certain tensile/compressive strain and storage modulus increased gradually;with increasing molecular weight of soft segment, PUFs elongation at break increased, but tensile strength, stress at certain tensile/compressive strain and storage modulus all decreased accordingly;glass transition temperature (Tg) of PUF with various soft segments decreased according to the following sequence: PEG-400, PCL210N, PEG-1000 and PTMG1000;loss factor of PUF with PEG/PCL mixed soft segments was higher than that of PUF with individual PEG or PCL soft segments.
Wang Jianhua Liang Shuen Wang Yanyan Tian Chunrong ZhaoXiuli
Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, China, 621900 Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, China, 621900 Insti
国际会议
哈尔滨
英文
1611-1615
2011-03-26（万方平台首次上网日期，不代表论文的发表时间）