Preparation and characterization of ternary blends composed of polylactide, poly(ɛ-caprolactone) and starch

Liao, Hsin‐Tzu; Wu, Chin‐San

doi:10.1016/j.msea.2009.03.003

Cited by 86 publications

(32 citation statements)

References 46 publications

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“…However, the starch content was less than 30% (3/7), the elongation at break of composites was decreased gradually. At this time, the ratio of PLA was more than 70%, while the PLA showed brittleness and poor ductility [19] . Therefore, the material was easy to break under the action of tension.…”

Section: Effect Of Starch/pla Ratio On the Mechanical Strengthmentioning

confidence: 87%

Effect of starch/polylactic acid ratio on the interdependence of two-phase and the properties of composites

Zuo

Cao

et al. 2015

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Starch/polylactic acid (PLA) composites were prepared by melt extrusion, with corn starch and PLA as raw materials, glycerol as the plasticizer. Effects of starch/PLA ratio on the interdependence of two-phase and other properties of the composites were studied. The combination of results of TGA with SEM indicated that the interdependence between starch and PLA was increased gradually as the starch/PLA ratio reduced. DSC results showed that the glass transition temperature (T g ), melting temperature (T m ) and degree of crystallinity of PLA in composites were increased gradually, whereas the cold crystallization temperature (T c ) was gradually decreased as the starch/PLA ratio reduced. The rheological properties of composites were closely related with the interdependence of two-phase, with reducing starch/PLA proportion, the interdependence was increased, and then the strain for storage modulus was firstl reduced and then gradually increased. Frequency scanning showed that the storage modulus and complex viscosity were decreased with reducing starch content. As the starch/PLA ratio reduced, the matrix phase PLA was increased, so that the strength of composites was increased gradually, whereas water absorption rate was decreased gradually.

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Section: Effect Of Starch/pla Ratio On the Mechanical Strengthmentioning

confidence: 87%

Effect of starch/polylactic acid ratio on the interdependence of two-phase and the properties of composites

Zuo

Cao

et al. 2015

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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“…The main strategies to address these problems are to develop materials that are renewable, degradable, and recyclable, better known as "green materials," as alternatives to the petroleum-based materials. [1][2][3][4] The most popular and important biodegradable polymers are aliphatic polyesters such as polylactide (PLA), poly(ε-caprolactone) (PCL), polyethylene oxide (PEO), poly(ε-hydroxybutyrate) (PHB), and polyglycolic acid. 5,6 The biodegradable PLA has attracted increasing attention as a candidate for us in industrial applications since it possesses excellent mechanical properties (especially in tensile strength and modulus) and is produced with corn or other starches as the starting raw material.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Thermal Properties and Rheological Behavior of PLA/PCL Blends for Melt-blown Nonwovens

Sun¹,

Yu²,

Hán³

et al. 2014

Polymer Korea

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Poly(lactic acid) (PLA) and poly(ε-caprolactone) (PCL) blends with various components for melt-blown nonwovens were prepared by a twin-screw extruder. Tributyl citrate (TBC) was added in order to improve the miscibility between PLA and PCL. The results showed that small circular particles of PCL were dispersed in PLA matrix uniformly. The addition of PCL had the heterogeneous nucleation effect on the crystallization of PLA and decreased thermal stability of PLA. The flow of pure PLA and blends approached to Newtonian liquid at a low shear rate and expressed more obvious viscoelasticity at a high shear rate.

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“…To overcome these drawbacks, many researches have been studied about PLA blending with a nucleating agent and a flexible polymer for improving the crystallization behavior and toughness of PLA. Many attempts have revealed that the nucleating agents such as modified montmorillonite (MMT), clay, and talc as well as the flexible polymer such as poly(e-caprolactone) (PCL) and poly(butylene adipate-co-terephthalate) (PBAT) have been well-worked with PLA [4,5,11,12]. One of the most widely studied and effective nucleating agents and flexible polymers for PLA modification are talc and PBAT, respectively, which have been used to enhance the crystallization rate, nucleation density, impact strength, and flexibility of the blends [5,11].…”

Section: Introductionmentioning

confidence: 99%

Isothermal crystallization behaviors and kinetics of nucleated polylactide/poly(butylene adipate-co-terephthalate) blend films with talc

Phetwarotai

Aht‐Ong

2016

J Therm Anal Calorim

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Polylactide (PLA) and its blend films with and without a compatibilizer in the presence of poly(butylene adipate-co-terephthalate) (PBAT) and talc were prepared through a twin-screw extruder. The effects of PBAT, talc, and various contents of compatibilizer on thermal and morphological properties as well as crystallization of these blends were investigated. PBAT and talc were used as a flexible polymer and a nucleating agent at 10 mass% and 1 phr, respectively, whereas methylenediphenyl diisocyanate was used as a compatibilizer at different amounts (1-7 mass% based on PBAT contents). Isothermal crystallization behaviors and kinetics of neat and nucleated PLA blends were evaluated by differential scanning calorimeter and polarized optical microscope. The Avrami and Arrhenius equations were used to investigate the crystallization kinetics. The results revealed that the presence of PBAT and talc in the films led to an increment of crystallization rate of PLA via a synergistic effect under isothermal crystallization conditions. However, the crystallization rate significantly decreased with increasing the crystallization temperature (T c ). These results were in agreement with crystallization kinetic and morphological studies, suggesting that the crystallization behaviors, kinetics, and mechanisms of PLA were affected by these factors.

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Preparation and characterization of ternary blends composed of polylactide, poly(ɛ-caprolactone) and starch

Cited by 86 publications

References 46 publications

Effect of starch/polylactic acid ratio on the interdependence of two-phase and the properties of composites

Effect of starch/polylactic acid ratio on the interdependence of two-phase and the properties of composites

Microstructure, Thermal Properties and Rheological Behavior of PLA/PCL Blends for Melt-blown Nonwovens

Isothermal crystallization behaviors and kinetics of nucleated polylactide/poly(butylene adipate-co-terephthalate) blend films with talc

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