Mechanical and Dynamic Mechanical Properties of Degradable Polyurethane Foams with PEG/PCL Mixed Soft Segments

Abstract:

Polyurethane (PU) with mixed poly(ethylene glycol) / poly(ε-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 PUF's mechanical and dynamic mechanical properties were studied. The results showed that: with increasing content of PCL, PUF's tensile strength, elongation at break, stress at certain tensile/compressive strain and storage modulus increased gradually; with increasing molecular weight of soft segment, PUF's elongation at break increased, but tensile strength, stress at certain tensile/compressive strain and storage modulus all decreased accordingly; glass transition temperature (T_g) of PUF with various soft segments decreased according to the following sequence: PEG-400, PCL-210N, 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.

• Periodical: Advanced Materials Research (Volumes 183-185)
• Pages: 1611-1615
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.183-185.1611
• Online since: January 2011
• Authors: Jian Hua Wang, Shuen Liang, Yan Yan Wang, Chun Rong Tian, Xiu Li Zhao
• Keywords: Degradable, Dynamic Mechanical Property, Mechanical Property, Poly(ethylene glycol) (PEG), Poly(ε-Caprolactone), Polyurethane Foam

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