In this study, a poly(lactic acid) (PLA) ternary blend system consisting of PLA, an epoxy-containing elastomer, and zinc ionomer was introduced studied in detail. Transmission electron microscopy revealed that the "salami"-like phase structure formed blends. While increase blending temperature had little effects on tensile properties resulting blends, it greatly changed impact strength. For blends prepared at 240 °C by extrusion blending, PLA displayed supertoughness with moderate levels...

Polyglycolic acid (PGA) is considered a promising competitor in green packaging due to its superior strength and outstanding barrier properties, but applications are limited by inherent brittleness. Traditional toughening methods usually accompanied sacrifices both properties. In this work, robust high-barrier PGA/poly(butylene adipate-co-terephthalate) (PBAT) films were prepared combining reactive compatibilization, biaxial drawing, constrained annealing processes. The abundant uniformly...

Poly(lactic acid) (PLA) can be toughened by flexible poly(butylene adipate-co-terephthalate) (PBAT) at the cost of a certain degree strength and modulus loss. In an attempt to achieve balanced overall properties, PLA ternary composites containing both PBAT rigid nanoparticles, i.e., montmorillonite clay (MMT) or nanosized precipitated calcium carbonate (NPCC), were prepared twin screw extrusion subsequent injection molding. Mechanical testing demonstrated that MMT exhibited higher tensile...

Rosin is an abundantly available natural product. a mixture of acidic (ca. 90%) and neutral 10%) compounds. The characteristic fused ring structure rosin acids analogous to that some aromatic compounds in rigidity, makes its derivatives potential substitutes for those polymers. In this study, the synthesis biobased epoxy curing agent using cure reaction were investigated. Abietyl glycidyl ether methyl maleopimarate synthesized from one acids. was used as model compound representing...

Abstract BACKGROUND: Although rosin acid derivatives have received attention in polymer synthesis recent years, to the best of our knowledge, they rarely been employed as epoxy curing agents. The objective study reported here was synthesize rosin‐based flexible anhydride‐type agents and demonstrate that flexibility a cured resin can be manipulated by selection with appropriate molecular rigidity/flexibility. RESULTS: Maleopimarate‐terminated low weight polycaprolactones (PCLs) were...

Abstract In recent years TPS has attracted more and research interest as a promising replacement for commodity polymers in some applications. this paper, novel manufacturing technology to produce PLA fiber reinforced biodegradable composite, the microstructure tensile properties of were first reported. micro/sub‐micro fibers generated situ by elongational flow during die extrusion subsequent hot stretching. The addition 10% significantly increased drawability TPS. Compared direct extrusion,...

A noncommutative BTZ black hole is constructed in three-dimensional anti-de Sitter space. In this black-hole model, the smearing obtained by replacing point-like source term with a Lorentzian distribution. We mainly investigate thermodynamical properties of hole, including Hawking temperature, entropy, heat capacity and free energy.

In this work, biobased poly(lactic acid) (PLA)/soy protein concentrate (SPC) composites were prepared by twin screw extrusion and injection molding. Poly(2-ethyl-2-oxazoline) (PEOX) polymeric methylene diphenyl diisocyanate (pMDI) used sequentially as compatibilization agents to improve phase morphology interfacial bonding. Properties of the PLA/SPC significantly improved application PEOX pMDI. The SPC was refined stretched into fine threads during processing under effect PEOX. With only 0.5...

In this work, sugar beet pulp (SBP), the residue remaining after extraction, was first turned into a thermoplastic-like compound by extrusion in presence of water and glycerol. The resulting thermoplastic SBP (TSBP) then blended with poly(butylene adipate-co-terepthalate) (PBAT) extruded sheets single process. effects polymeric diphenyl methane diisocyanate (pMDI) as compatibilizer TSBP content on rheological properties, phase morphology, mechanical absorption were studied. comparison, dried...

Abstract Totally biodegradable, double‐layered antimicrobial composite films were introduced for food packaging. The substrate layers of the sheets prepared from poly(lactic acid) (PLA) and sugar beet pulp (SBP) or poly (butylene adipate‐ co ‐terephthalate (PBAT) SBP by a twin‐screw extruder. active layer consisting in either PLA chitosan was formed on surfaces substrates solution coating followed solvent evaporation. Air‐coupled ultrasonic evaluation microscopic examination showed...

Abstract Poly(lactic acid) (PLA) and soy protein concentrate (SPC) were compounded using poly(2‐ethyl‐2‐oxazoline) as compatibilizer by twin‐screw extrusion, the resulting blends foamed a chemical blowing agent (CBA) same extruder. Effects of foaming temperature CBA content on cell density foam investigated. Polymeric methylene diphenyl diisocyanate (pMDI) co‐compatibilizer was added prior to extrusion its effects morphology properties also studied. The results showed that greatly influenced...

Abstract When containing extra water, soy protein concentrate (SPC) can behave like a plastic melt rather than particulate filler in blending process. In this study, blends of formulated SPC and poly(lactic acid) (PLA) were prepared. The effects glycerol water added to on phase morphology, rheological, thermal, thermal‐dynamic, mechanical properties the investigated. results demonstrated that was more effective gelating transforming it into glycerol. With added, resulting blend existed as...

Quaternized carboxymethyl chitosan (QCMC) is a novel derivative of with great potential in clinical medicine application. In this study, order to widen its application, QCMC was used intercalate into organic rectorite (OREC) prepare polymer/ layered silicate nanocomposite. XRD and TEM results showed that had been inserted the interlayer silicate; largest distance 4.7nm when mass ratio OREC 2:1. FTIR, XRD, 27Al-NMR, 29Si-NMR Zeta analyses indicated there strong interaction between OREC....

Abstract In this work, study aimed to overcome the inherent disadvantage of low thermal stability and brittleness epoxy resins. A novel modifiers containing alkynyl‐ allyla‐ groups, (E)‐1‐(4‐(allyloxy)‐3‐methoxyphenyl)‐N‐(3‐ethynylphenyl)methanimine (MNEM) was prepared confirmed by Fourier transform infrared spectroscopy (FTIR) 1 H‐nuclear magnetic resonance ( H NMR), selected improve toughness bisphenol A‐type resin (E51). The blend resins were produced blending with different contents MNEM...