Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 132, Issue 22, Pages -Publisher
WILEY
DOI: 10.1002/app.41985
Keywords
applications; blends; composites; packaging
Categories
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2013R1A1A2057674]
- National Research Foundation of Korea [2013R1A1A2057674] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A series of LDPE/PVA blend films were prepared via a twin-screw extruder, and their morphology, thermal property, oxygen and water vapor permeation, surface properties, and mechanical properties were investigated as a function of the PVA content. During the extrusion process of the blend films, glycerin improved the compatibility and processing conditions between LDPE and PVA. The melting temperature (T-m), melting enthalpy (H-m), crystallinity (%), and thermal stability of the thermal decomposition temperature (T-5%) of the LDPE/PVA blend films decreased with increasing PVA content. The oxygen permeabilities of the blend films decreased from 24.0 to 11.4 cm(3)center dot cm (m(2)center dot day center dot atm)(-1) at 23 degrees C. The WVTR increased from 7.8 to 15.0 g(m(2) day)(-1) and the water uptake increased from 0.13 to 9.31%, respectively. The mechanical properties of blend films were slightly enhanced up to 2% PVA and then decreased. The physical properties of the blend films strongly varied with the chemical structure and morphology depending on the PVA and glycerin. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41985.
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