Journal
FIBERS AND POLYMERS
Volume 17, Issue 11, Pages 1849-1857Publisher
KOREAN FIBER SOC
DOI: 10.1007/s12221-016-6679-1
Keywords
Poly(lactic acid); Poly(vinyl acetate); TiO2; ZnO; Microcapsule; UV-blocking performance; Mechanical properties
Categories
Funding
- Zhejiang Sci-Tech University [111121A4E12326]
- Zhejiang Provincial Key Lab
- Of Industrial Textile Materials AMP
- Manufacturing Tech [11110531271546]
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The poly(vinyl acetate) (PVAc)/zinc oxide (ZnO) microcapsule and PVAc/titanium dioxide (TiO2) microcapsule were synthesized via in-situ emulsion polymerization method. The PVAc/ZnO microcapsule and PVAc/TiO2 microcapsule were characterized by fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis(TG), transmission electron microscopy (TEM), and UV-visible spectroscopy (UV-vis). Effect of PVAc/ZnO microcapsule and PVAc/TiO2 microcapsule on properties of poly(lactic acid) (PLA) was evaluated by UV-vis, SEM and mechanical properties test. The results showed that the addition of PVAc/ZnO and PVAc/TiO2 microcapsules as a UV-blocking additive could significantly enhance UV-blocking property of PLA/PVAc/ZnO microcapsule composites and PLA/PVAc/TiO2 microcapsule composites compared with pure PLA, PLA/ZnO composites and PLA/TiO2 composites. The mechanical properties of PLA/PVAc/ZnO microcapsule composites were better than those of PLA/ZnO composites due to good dispersability and compatibility of PVAc/ZnO microcapsule in PLA matrix. Also, the mechanical properties of PLA/PVAc/TiO2 microcapsule composites were better than those of pure PLA and PLA/TiO2 composites. This study demonstrates the great potentials of the intrinsically UV shield additive PVAc/ZnO and PVAc/TiO2 microcapsules in the application of high performance matrix resin and composite material.
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