Melt and solution processable novel photoluminescent polymer blends for multifaceted advanced applications

Thakur, Suman; Martínez-Alonso, Carmen; Lopez-Hernandez, Emil; López–Manchado, Miguel A.; Verdejo, Raquel

doi:10.1016/j.polymer.2021.123378

Cited by 9 publications

(4 citation statements)

References 39 publications

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“…The glass transition temperature of the two components is the major factor determining the dynamics and thermodynamic properties [ 35 ]. One of the Tg peaks of the blend samples indicates that samples are mixed homogeneously with both polymer matrixes, Figure 2 [ 36 ]. Neat PLLA and PDLA polymers had only one T m peak at approximately 175 °C, corresponding to the HC, while there were two T m peaks at 175 °C and 225 °C for the blends with mass ratios of 9/1, 8/2, 7/3, 6/4, and 5/5.…”

Section: Resultsmentioning

confidence: 99%

“…Neat PLLA and PDLA polymers had only one T m peak at approximately 175 °C, corresponding to the HC, while there were two T m peaks at 175 °C and 225 °C for the blends with mass ratios of 9/1, 8/2, 7/3, 6/4, and 5/5. A higher T m at approximately 225 °C corresponded to the stereocomplex crystallization (SC) fusion in PLLA/PDLA blends [ 35 , 36 ] due to the simultaneous HC and SC. Moreover, the fact that the T m positions did not shift with different sample compositions indicates that the PLLA/PDLA undergoes stereocomplex and the PLLA undergoes HC almost independently [ 3 ].…”

Section: Resultsmentioning

confidence: 99%

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Relationship between the Stereocomplex Crystallization Behavior and Mechanical Properties of PLLA/PDLA Blends

Park

Hong

2021

Polymers

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Poly (l-lactic acid) (PLLA) is a promising biomedical polymer material with a wide range of applications. The diverse enantiomeric forms of PLLA provide great opportunities for thermal and mechanical enhancement through stereocomplex formation. The addition of poly (d-lactic acid) (PDLA) as a nucleation agent and the formation of stereocomplex crystallization (SC) have been proven to be an effective method to improve the crystallization and mechanical properties of the PLLA. In this study, PLLA was blended with different amounts of PDLA through a melt blending process and their properties were calculated. The effect of the PDLA on the crystallization behavior, thermal, and mechanical properties of PLLA were investigated systematically by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (XRD), polarized optical microscopy (POM), dynamic mechanical analysis (DMA), and tensile test. Based on our findings, SC formed easily when PDLA content was increased, and acts as nucleation sites. Both SC and homo crystals (HC) were observed in the PLLA/PDLA blends. As the content of PDLA increased, the degree of crystallization increased, and the mechanical strength also increased.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Relationship between the Stereocomplex Crystallization Behavior and Mechanical Properties of PLLA/PDLA Blends

Park

Hong

2021

Polymers

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“…The potential of polymer blending for achieving polymeric materials with improved printability and 3D-printed parts with enhanced functional properties has been established [257,265,281] However, there are still limited studies on the development of immiscible polymer blends feedstock. Compared with miscible blends, immiscible blends offer a wider scope for achieving polymeric products with desired property.…”

Section: D Printing Of Polymer Blendsmentioning

confidence: 99%

3D‐Printed Functional Polymers and Nanocomposites: Defects Characterization and Product Quality Improvement

et al. 2022

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There have been continuing efforts toward improving printability and minimizing defects in 3D‐printed functional polymers and polymer nanocomposites (PNCs). While printability is essentially material related, and formation of defects is largely influenced by operational parameters, there is an interconnection between the factors influencing both. It is important to have a comprehensive insight on how these aspects interrelate to increase the prospect of improving part performance and widening the current range of applications of 3D‐printed polymer‐based functional materials. Therefore, this work first reviews various polymer 3D printing techniques and recent advances in 3D‐printed functional polymers and PNCs before discussing characterization and control of common defects in printed parts. Techniques for improving printability of polymer‐based functional materials are then discussed. Some opportunities for further developments in this area are highlighted in respect of polymer blending, immiscible blend nanocomposites, and a specific product development prospect.

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“…Many important applications of photoluminescence technology have been developed, such as fluorescence microscope, fluorescent tube and lamp, optical brightener, plasma screen, forensic medicine, hydrogeological tracer, fluorescent and phosphorescent coatings, phosphorescent labels, safety signs, and forgery detection (safety documents, banknotes, artworks). [4,5] Since the end of last century, the concept of trichromatic light and rare earth metal ions doping have been introduced into fluorescent lamps. Various luminescent materials have been developed in the research of new phosphors, which has led to a trend toward the use of plasma display panel, inorganic electroluminescent light source, field emission displays, and mercury-free fluorescent lamps.…”

Section: Introductionmentioning

confidence: 99%

Preparation, Photochromism, and Luminescence Principle of BMS: Dy³⁺, Eu³⁺ Ceramics

Wang

Zhang

2022

Crystal Research and Technology

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A series of barium magnesium silicate (BaMgSiO 4 ) compounds 1-6 are synthesized successfully, which show property of down conversion fluorescent materials. The photochromic properties and fluorescence intensity of these materials depend on the relative content of Eu and Dy. The photoluminescence excitation spectroscopy spectrum of 4 shows that the emission spectrum has a broad band at 396 nm, which is the maximum excitation wavelength. At the wavelength of 396 nm, The photoluminescence (PL) spectra of 3 and 4 show a broad emission peak at 476 and 610 nm, respectively. 3 and 4 show blue-green fluorescence under UV irradiation, while the luminescent intensity of 3 is slightly higher than 4. The X-ray photoelectron spectra of 3 show Dy 3+ and Eu 3+ , while the electron paramagnetic resonance spectra of 3 and 4 show oxygen vacancies.Research data are not shared.

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Melt and solution processable novel photoluminescent polymer blends for multifaceted advanced applications

Cited by 9 publications

References 39 publications

Relationship between the Stereocomplex Crystallization Behavior and Mechanical Properties of PLLA/PDLA Blends

Relationship between the Stereocomplex Crystallization Behavior and Mechanical Properties of PLLA/PDLA Blends

3D‐Printed Functional Polymers and Nanocomposites: Defects Characterization and Product Quality Improvement

Preparation, Photochromism, and Luminescence Principle of BMS: Dy³⁺, Eu³⁺ Ceramics

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Melt and solution processable novel photoluminescent polymer blends for multifaceted advanced applications

Cited by 9 publications

References 39 publications

Relationship between the Stereocomplex Crystallization Behavior and Mechanical Properties of PLLA/PDLA Blends

Relationship between the Stereocomplex Crystallization Behavior and Mechanical Properties of PLLA/PDLA Blends

3D‐Printed Functional Polymers and Nanocomposites: Defects Characterization and Product Quality Improvement

Preparation, Photochromism, and Luminescence Principle of BMS: Dy3+, Eu3+ Ceramics

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Preparation, Photochromism, and Luminescence Principle of BMS: Dy³⁺, Eu³⁺ Ceramics