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Partially exfoliated nanocomposite(2) has been synthesized by intercalation of poly(propylene carbonate)(PPC) into commercial clay,Cloisite 20B(PPC/C-20B).Nanocomposite 2 was characterized phiso-chemically and exhibited high thermal,mechanical and anti-water sorption properties as compared to PPC and intercalated nanocomposite(1) of PPC/C-20B having same amount of clay.TGA results revealed that the thermal decomposition temperature(T_(d,50%)) of 2 increased significantly,being 40 K and 17 K higher than that of pure PPC and 1,respectively,while DSC measurements indicated that the nano-filler dispersion of 2 increased the glass transition temperature from 21℃to 31℃.Accordingly,2 showed high elastic modulus,hardness and anti-water absorption capacity.These thermal,mechanical and anti-water absorption improvements are of great importance for the application of PPC as packaging and biomaterials.
Partially exfoliated nanocomposite (2) has been synthesized by intercalation of poly (propylene carbonate) (PPC) into commercial clay, Cloisite 20B (PPC / C-20B). Nanocomposite 2 was characterized phiso-chemically and exhibited high thermal, mechanical and anti- water sorption properties as compared to PPC and intercalated nanocomposite (1) of PPC / C-20B having the same amount of clay.TGA results revealed that the thermal decomposition temperature (T_ (d, 50%)) of 2 increased significantly, being 40 K and 17 K higher than that of pure PPC and 1, respectively, while, while DSC measurements indicated that the nano-filler dispersion of 2 increased the glass transition temperature from 21 ° C. to 31 ° C. Accredited, 2 showed high elastic modulus, hardness and anti- water absorption capacity.These thermal, mechanical and anti-water absorption improvements are of great importance for the application of PPC as packaging and biomaterials.