Preparation and characterization of LDPE/PVA blend films filled with glycerin-plasticized polyvinyl alcohol

Dowan Kim; Jeyoung Jung; Su Il Park; Jongchul Seo

doi:10.1002/app.41985

Preparation and characterization of LDPE/PVA blend films filled with glycerin-plasticized polyvinyl alcohol

Dowan Kim, Jeyoung Jung, Su Il Park, Jongchul Seo

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14 Citations (Scopus)

Abstract

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 (ΔH_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 cm³·cm (m²·day·atm)^-¹ at 23°C. The WVTR increased from 7.8 to 15.0 g(m² 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.

Original language	English
Article number	41985
Journal	Journal of Applied Polymer Science
Volume	132
Issue number	22
DOIs	https://doi.org/10.1002/app.41985
Publication status	Published - 2015 Jun 1

All Science Journal Classification (ASJC) codes

Chemistry(all)
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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Kim, D., Jung, J., Park, S. I., & Seo, J. (2015). Preparation and characterization of LDPE/PVA blend films filled with glycerin-plasticized polyvinyl alcohol. Journal of Applied Polymer Science, 132(22), [41985]. https://doi.org/10.1002/app.41985

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abstract = "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 (Tm), melting enthalpy (ΔHm), crystallinity (%), and thermal stability of the thermal decomposition temperature (T5%) 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 cm3·cm (m2·day·atm)-1 at 23°C. The WVTR increased from 7.8 to 15.0 g(m2 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.",

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