Sustainable waterborne polyurethane ionomer reinforced poly(vinyl alcohol) composite films
Source abstract
Abstract
Abstract Poly(vinyl alcohol) (PVA) was successfully reinforced by castor oil based waterborne polyurethane ionomer (PUI) synthesized from castor oil, dimethylolpropionic acid, 4,4′-methylenediphenyl diisocyanate, and triethylamine. The average diameter of PUI determined by dynamic light scattering and transmission electron microscope was around 45 nm. The size of dispersed PUI in PVA/PUI composite was in the ranges of 1.2–3.7 μm with varying PUI content from 1 wt.% to 7 wt.%. The storage modulus of PVA/PUI composite films determined by dynamic mechanical analysis was much higher than that of neat PVA film and increased first and then decreased with the content of PUI. PVA/PUI with 3 wt.% PUI showed the highest storage modulus. The reinforcement effect was also demonstrated by tensile test from the enhancement in Young’s modulus and tensile strength. The UV/vis spectra analysis suggested that the transparency of PVA was seldom influenced by incorporation of PUI.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer composites and self-healing · Polymer Nanocomposites and Properties · Dielectric materials and actuators
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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