Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 51, Issue 33, Pages 10785-10792Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ie300547g
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Funding
- National Science Fund of China [21104087]
- National High Technology Research and Development Program of China [2009AA033601]
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A series of biodegradable poly(ester-co-carbonate) multiblock copolymers consisting of poly(butylene succinate) and poly(butylene carbonate) (PBS-b-PBC) were synthesized successfully by chain-extension reaction of dihydroxyl terminated PBS-diol prepolymer and dihydroxyl terminated PBC-diol prepolymer using hexamethylene diisocyanate (HDI) as a chain extender. The chemical structures and molecular weights of copolymers were characterized by proton nuclear magnetic resonance (H-1 NMR) and gel permeation chromatography (GPC). The thermal properties, crystallization behavior, morphology and mechanical properties of PBS-b-PBC were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), phase-contrast optical microscopy (PCOM), and mechanical testing. It was found that the PBC soft segment is effective in enhancing the impact strength, while hardly decreases the melting point (T-m) of the copolymers. The resulting novel copolymers are expected to find a potential application in the area of biodegradable polymer materials.
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