Preparation and Properties of Functionalization for PLA FilmReport as inadecuate




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Functionalized PLA films were prepared by extrusion blow molding. The tensile strength TS, elongation at break E, water vapor permeability WVP, Oxygen permeability OP, antimicrobial rate AR, thermal properties and rheological properties were tested. The results showed that glass transition temperature Tg of the modified PLA material was 42.52 ℃,while that of the pure PLA was 65.6℃, and elongation at break of the prepared film reached up to 314%,but the TS is decrease from 64 MPa to 26.9 MPa. The antibacterial rate of PLA films to Escherichia coli, Staphylococcus aureus and Mildew were exceeded 95% by adding a copy of inorganic nano-titania-silver TiO2-Ag+. The thermal stability of modified PLA was decreased, but rheological property was improved and the shaping process was modified.

KEYWORDS

Polylactic acid; Antimicrobial rate; Plasticizers; Nano-TiO2-Ag+

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Author: Xiu-ke Fu, Jian-qing Wang, Zheng-wei Jin

Source: http://www.scirp.org/



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