Preparation, characterization and properties of PLA/TiO<sub>2</sub>nanocomposites based on a novel vane extruder

Zhang, Haichen; Huang, Jintao; Yang, Li; Chen, Rongyuan; Zou, Wei; Lin, Xiaona; Qu, Jinping

doi:10.1039/c4ra14538k

Cited by 109 publications

(88 citation statements)

References 44 publications

(49 reference statements)

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“…The machine construction and operational principle are totally different from the traditional screw extruder (TSE), and the ERE is the further development on the basis of the vane extruder. Recently, extensive studies about the vane extruder showed that the nanoparticles can disperse better within the polymer matrix under the dynamic elongational flow field than under shear flow field . For example, Zhang et al prepared the PLLA/TiO 2 nanocomposite by melt blending based on the dynamic elongational flow.…”

Section: Introductionmentioning

confidence: 99%

Morphology, rheology property, and crystallization behavior of PLLA/OMMT nanocomposites prepared by an innovative eccentric rotor extruder

Tong

Qiu

et al. 2017

Polymers for Advanced Techs

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An innovative eccentric rotor extruder, which can generate continuous elongation flow, was used to fabricate the poly(L‐lactide) (PLLA)/organo‐modified montmorillonite (OMMT) nanocomposites in different OMMT concentrations. The morphology of the nanocomposites was characterized by thermal gravimetric analyzer, X‐ray diffractometer, and transmission electron microscope. The results showed that the OMMT nanoparticles were uniformly dispersed in the PLLA matrix and mainly existed in intercalation mode. The intercalation and exfoliation process of OMMT in the eccentric rotor extruder may be a double‐side exfoliation, which is more effective than the layer‐by‐layer peeling mechanism based on the shear flow. The influence of OMMT on the rheological behavior of PLLA was investigated by dynamic rheological measurements, showing greater improvement of rheological properties for the nanocomposites. The thermo‐mechanical properties analysis indicated that significant enhancement of E′ can be seen for all the nanocomposites. Presence of intercalated OMMT platelets did not lead to a significant shift of the E″ and tan δ curves compared with that of pure PLLA. The crystallization and melting behavior was studied by differential scanning calorimetry, which indicated that the incorporation of OMMT nanoparticles slightly increased the crystallinity of PLLA matrix. The polarizing microscope was further carried out and showed that the dispersed OMMT nanoparticles acted as a heterogeneous nucleating agent to promote the crystallization of PLLA.

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Section: Introductionmentioning

confidence: 99%

Morphology, rheology property, and crystallization behavior of PLLA/OMMT nanocomposites prepared by an innovative eccentric rotor extruder

Tong

Qiu

et al. 2017

Polymers for Advanced Techs

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“…The toughness of PLA could be improved by poly ( ε ‐caprolactone‐co‐ d , l ‐lactide), low density poly (ethylene), PPC, poly (vinyl acetate), ethylene acrylic acid, and inorganic materials such as nano calcium carbonate and nano TiO 2. Although there is a certain effect, these materials are poor compatibility with the PLA; meantime, these materials are non‐degradable materials and poor environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, thermal and rheological properties and morphology of poly (lactic acid)/poly (propylene carbonate) blends prepared by vane extruder

Zou

Chen

Zhang

et al. 2016

Polym. Adv. Technol.

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In this study, the poly (lactic acid) (PLA) and poly (propylene carbonate) (PPC) blends with different compositions were prepared by a novel vane extruder based on elongation rheology. The mechanical properties, morphologies, crystallization behavior, thermal stability, and rheological properties of the blends were investigated. Mechanical test showed that PLA could be toughened by PPC to some extent, and the impact strength of the PLA was maximized when PPC content was about 30%. Differential scanning calorimetry analysis revealed that PPC had little effect on the melting process, the crystallization behavior of PLA component in the blend was improved, and the cold crystallizability of PLA decreased with the increase of PPC content when the PPC content was less than 50%. Thermogravimetry analysis showed that the thermal stability of the blends was improved by compounding with PLA. Scanning electron microscope showed that the dispersion of PLA droplets in PPC matrix was better than that of PPC droplets in PLA matrix. Rheological test showed that the melt viscosity of the pure PLA and the blend with 10% PPC was insensitive to shear rate, and the blends melt appeared shear thinning phenomenon with the increase of PPC content. It also showed that the blends microstructure changed with the addition of PPC and the blends with PPC content in a certain range had similar stress relaxation mechanism. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Zhang et al prepared PLA/TiO 2 nanocomposites through a vane extruderthat promotes an elongation flow field, which is beneficial for the dispersion of composites. In addition, it is especially suitable for the processing of thermo‐sensitive polymers because of its short processing time, resulting in reduced degradation.…”

Section: Reinforcing Pla‐based Materials Through Nanocompositesmentioning

confidence: 99%

“…Unlike other nanocomposites, TiO 2 inhibits the cold crystallization process. The polymer matrix also shows improved surface wettability and UV resistance …”

Section: Reinforcing Pla‐based Materials Through Nanocompositesmentioning

confidence: 99%

Poly(lactic acid)‐based nanocomposites

Basu

Nazarkovsky

Ghadi

et al. 2016

Polymers for Advanced Techs

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Classic plastics accumulate in nature causing environmental pollution, yet as a counterbalance they benefit society in many ways. They are versatile, cost‐effective, and can be tailored to have desired properties. The global environment has led to the fabrication of commodity plastics from environmentally degradable polymers. Poly(lactic acid) (PLA) is the most promising among the environmentally friendly polymers available. PLA‐based plastics have mechanical, thermal, and transparency similar to traditional plastics, and they can be molded and fabricated using the same equipment and procedures. Their material properties are enhanced through nanocomposites, compatibilizers, plasticizers, and other fillers (flame retardant, ultraviolet filter, etc.). This review summarizes mass production techniques and property reinforcements (focusing on nanocomposites and plasticizers) for PLA‐based plastics for commodity use. Copyright © 2016 John Wiley & Sons, Ltd.

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Preparation, characterization and properties of PLA/TiO₂nanocomposites based on a novel vane extruder

Abstract: Polylactide/TiO2 nanocomposites with different contents of nanoscale TiO2 were prepared by melt blending with a vane extruder in this work.

Cited by 109 publications

References 44 publications

Morphology, rheology property, and crystallization behavior of PLLA/OMMT nanocomposites prepared by an innovative eccentric rotor extruder

Morphology, rheology property, and crystallization behavior of PLLA/OMMT nanocomposites prepared by an innovative eccentric rotor extruder

Mechanical, thermal and rheological properties and morphology of poly (lactic acid)/poly (propylene carbonate) blends prepared by vane extruder

Poly(lactic acid)‐based nanocomposites

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Preparation, characterization and properties of PLA/TiO2nanocomposites based on a novel vane extruder

Abstract: Polylactide/TiO2 nanocomposites with different contents of nanoscale TiO2 were prepared by melt blending with a vane extruder in this work.

Cited by 109 publications

References 44 publications

Morphology, rheology property, and crystallization behavior of PLLA/OMMT nanocomposites prepared by an innovative eccentric rotor extruder

Morphology, rheology property, and crystallization behavior of PLLA/OMMT nanocomposites prepared by an innovative eccentric rotor extruder

Mechanical, thermal and rheological properties and morphology of poly (lactic acid)/poly (propylene carbonate) blends prepared by vane extruder

Poly(lactic acid)‐based nanocomposites

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Preparation, characterization and properties of PLA/TiO₂nanocomposites based on a novel vane extruder