Flexible and strong ternary blends of poly(vinyl chloride), poly(butylene adipate) and nanoparticle-plasticizers

Abstract

h i g h l i g h t s g r a p h i c a l a b s t r a c t < Ternary blends of PVC, poly(-butylene adipate) (PBA) and nanofillers were prepared. < PBA plasticizer was grafted on surface of nanofillers. < Simultaneous up to 100% increase in stress and strain at break was obtained. a r t i c l e i n f o b s t r a c tMultiple property enhancement was achieved for ternary blends of PVC, poly(butylene adipate) (PBA) plasticizer and PBA-grafted nanofillers as compared to ternary blends with untreated nanofillers. The blends with surface modified halloysite, kaolin or silicon dioxide nanofillers all exhibited higher stress at break and higher strain at break as compared to the corresponding composites with untreated nanoparticles. The strain at break was similar or improved compared to binary PVC/PBA blends. Most significant improvement was observed for the films containing surface treated halloysite nanofillers. Over 100% increase in stress at break and strain at break was obtained when compared to the corresponding nanocomposite containing untreated halloysite fillers. In addition to tensile testing the prepared films were characterized by DSC, SEM, TGA and FTIR imaging to evaluate the miscibility and thermal properties. Interestingly the FTIR imaging analysis revealed that the surface grafting of halloysite resulted not only in improved dispersion of halloysite filler, but also in more homogenous distribution of PBA plasticizer in the blends. During aging in contact with aqueous solution the films containing kaolin exhibited the smallest weight loss. This is explained by the plate like structure of kaolin which prevents the migration of PBA molecules.

Mechanical and barrier properties of polyvinyl chloride plasticized with dioctyl phthalate, epoxidized soybean oil, and epoxidized cardanol

“…PVC/nanoclay composites with a variety of polymers and plasticizers have been extensively studied by various research groups. [26][27][28][29][30][31][32][33] Kalendova et al [34] have prepared PVC/nanoclay composites with enhanced barrier properties but with slight reduction in plasticizer migration properties for various advanced packaging applications.…”

Fabrication and characterization of biodegradable poly(butylene succinate-co-adipate) nanocomposites with halloysite nanotube and organo-montmorillonite as nanofillers

“…HNTs are multi-walled inorganic materials that possess a unique combination of large aspect ratio (typically ca. 10e50), high mechanical strength, natural availability and good biocompatibility [13,14]. Similar to other nanofillers, fine dispersion throughout the polymer matrix and strong adhesion to the polymer are two keys in achieving HNT-supplemented nanocomposites.…”

Improvement in mechanical properties of polyurethane‐urea nanocomposites by using modified SiO2 nanoparticles

“…Among various nanoparticles, silica (SiO 2 ) nanoparticles exhibited unique properties such as availability, low cost, well‐known chemistry and active hydroxyl groups that make this nanoparticle suitable for functionalization . Applying SiO 2 nanoparticles in polymer matrix improves its mechanical and thermal properties which make this nanoparticle desirable in many studies . In addition, previous studies showed that using SiO 2 as filler in nanocomposites has been led to enhancement mechanical properties in comparison to the polymers with the same structure.…”