Largely enhanced mechanical performance of poly(butylene succinate) multiple system via shear stress-induced orientation of the hierarchical structure

Abstract

The simultaneous reinforcement and toughening of poly(butylene succinate) was achieved via an oriented hierarchical structure induced by oscillation shear stress and promoted by poly(l-lactide).

Organic acids under pressure: elastic properties, negative mechanical phenomena and pressure induced phase transitions in the lactic, maleic, succinic and citric acids

“…295,300 The characteristics and mechanical properties of many interesting polymers and materials based on, or related to, succinic acid have long been investigated. [301][302][303][304][305][306][307][308][309][310][311][312][313][314][315][316][317] 2.3.1 Crystal structure. The optimized crystal structure of succinic acid, COOH-CH-CH-COOH, is plotted in Fig.…”

Imparting Gradient and Oriented Characters to Cocontinuous Structure for Improving Integrated Performance

“…[16,17] Moreover, the appropriate orientation of phase field can enhance the fracture toughness without major compromise to stiffness and strength. [11,[18][19][20][21][22][23][24][25] Hence, the nacre with laminated structure is twice as hard and 1000 times as tough as its constituent phases, providing strength, hardness, and toughness. [10] Such investigations inspire us to design an oriented and gradient structure in the cocontinuous phase, which is highly expected to have excellent performance.…”

“…Apart from oriented phase morphologies, shear stress can also induce formation of oriented hierarchical structure including oriented crystallites and oriented chain segments. [18][19][20][21][22][23] The morphologies at a micrometer (or submicrometer) scale are revealed using FE-SEM combined with etching technique. As shown in Figure 5a, astonishingly well aligned lamellae of PBS are formed in skin layer, reflecting that the intense shear stress can induce chain configuration from the initial equilibrium random-coil state to oriented and aligned states and promote the formation of oriented lamellae.…”

“…[27,32] Meanwhile, shear stress can also induce the orientation ranging from submicro scale to nanometer scale such as oriented crystallites and molecular chains, leading to the hierarchical orientation. [18][19][20][21][22][23] Therefore, seeking approaches to control the temperature and shear stress can be an effective way to achieve gradient and orientation features of cocontinuous structure. Injection molding can be a feasible tool to offer controllable conditions for tuning cocontinuous structure with the features of gradient and orientation.…”

Effect of Different Compatibilizers on the Properties of Poly (Lactic Acid)/Poly (Butylene Adipate-Co-Terephthalate) Blends Prepared under Intense Shear Flow Field

“…The shear flow completes the blending of different materials, and the effective utilization of the shear flow during the blending process generally results in excellent performance [20,21]. Sheng-Yang Zhou [21] introduced strong shear flow into the processing of PLA/PBAT blends.…”