Polyacrylamide gel synthesis, structure and optical properties of LaP3O9:Eu3+ phosphors

Yang, Jinyu; Jia, Xiaoyun; Zeng, Xiaodao; Zhu, Liping; Chen, Zhuo

doi:10.1007/s10853-015-8996-y

Cited by 10 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, phosphors were added to the resin, and after 3D printing and molding, they were irradiated with UV red light (λ = 350 nm). This is similar to the photoluminescence spectrum of LaP 3 O 9 :Eu 3+ phosphors that emit red light, as reported by Yang et al [34]…”

Section: Fluorescence Spectral Characterization Of Fluorescent Resinsupporting

confidence: 89%

Synthesis and characterization of stereolithography3Dprinting fluorescent resin

Liu

Jin

et al. 2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

In this study, bisphenol A epoxy resin, 1,6-Hexanediol diacrylate (HDDA), and 2,4,6-Trimethylbenzoyl-diphenylphosphine oxide (TPO) were utilized as a prepolymer, diluent, and photoinitiator, respectively, to prepare a light curing system with different amount of phosphor, which was used in place of conventional inorganic fillers. Phosphor was utilized to improve the precision of the material molded parts during the light curing process and enhance the mechanical properties of the molded parts owing to the ultraviolet (UV) absorption properties of phosphor, which prevented UV damage to the material, thus improving the light aging resistance and stability of the molded parts. Results revealed that the addition of 3% phosphor optimized the mechanical properties of the material (a maximum tensile strength of 42.43 MPa). Additionally, the material achieved the lowest linear (4.1%) and volumetric (0.58%) shrinkage at a phosphor content of 6%. This study provides a new insight into three-dimensional (3D) printing resin for stereolithography and provides a reference for the improvement of 3D printing products.

show abstract

Section: Fluorescence Spectral Characterization Of Fluorescent Resinsupporting

confidence: 89%

Synthesis and characterization of stereolithography3Dprinting fluorescent resin

Liu

Jin

et al. 2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…The presence of LaP 3 O 9 increases the electrical conductivity of glass-ceramics and accelerates the healing of damaged tissues [59]. LaPO 4 forms at temperature above 900 °C as a result of the thermal decomposition of LaP 3 O 9 and has a monoclinic crystal structure (space group P2 1 /n) with the lattice parameters of a = 0.6812 nm, b = 0.7049 nm, c = 0.6484 nm and β = 103.6° [60,62]. It increases the machinability of calcium phosphate ceramics.…”

Section: Resultsmentioning

confidence: 99%

The effect of lanthanum addition on the microstructure and mechanical properties of Mg-modified hydroxyapatite ceramics

Pazarlıoğlu

Algan

Isikogullari

et al. 2021

PAC

View full text Add to dashboard Cite

In the present paper, the effect of La2O3 (0.25, 0.5 and 1 wt.%) addition on the phase stability, porosity, density, hardness, fracture toughness, compressive strength and brittleness index of hydroxyapatite modified with 1 wt.% of MgO was investigated. Hydroxyapatite (HA) without additives sintered at 1300?C has mixture of dominant hydroxyapatite phase with beta-tricalcium phosphate (?-TCP), alpha-tricalcium phosphate (?-TCP) and calcium oxide (CaO) phases. The microstructure is characterized with transgranular microcracks and oversized grains. Although the density and hardness of the pure HA increased with increasing temperature, a steady decrease in fracture toughness (from 0.96 to 0.71MPa?m1/2) and compressive strength (from 130.2 to 65.6MPa) was observed. For the HA modified with 1 wt.% of MgO the highest compressive strength (183.2MPa) and fracture toughness (1.47MPa?m1/2) were obtained at 1200?C and at this temperature the brittleness index was 3.24 ?m-1/2. Increase in the sintering temperature led to the increase of the brittleness index of the pure HA,MgO modified HA and La2O3-MgO modified HA samples. The addition of 1 wt.%La2O3 to 1 wt.% MgO-HA contributed to the increase in the compressive strength of about 10%(from 183.2 to 202.0MPa), fracture toughness of about 69% (from 1.37 to 2.32MPa?m1/2) and also decrease of the brittleness index from 3.24 to 2.18 ?m-1/2. The best performance after sintering at 1300?C was obtained for the MgO-HA sample with 0.25wt.% La2O3. As a result of this study, a new candidate material for biomedical application with superior mechanical properties and the phases that do not cause adverse reactions in the human body could be 1 wt.% MgO-HA modified with 1 wt.% La2O3 and sintered at 1200?C.

show abstract

“…No further mass loss was detected above 700 °C, indicating that the organic matter was completely removed. [23] The TG curves of PAM-b-DOPOAA showed three mass losses, [24] the first occurring between 100-240 °C with a mass loss of about 20 %, corresponding to the evaporation of intramolecular and intermolecular water. The copolymer contains a large number of strongly hydrophilic groups that allow the sample to bind to water molecules.…”

Section: Thermal Weight Loss Analysis Of Pam-br and Pam-b-dopoaa Bloc...mentioning

confidence: 99%

Preparation and Characterization of PAM‐b‐DOPOAA by ATRP

Wang

Yang

et al. 2022

ChemistrySelect

View full text Add to dashboard Cite

Polyacrylamide has been a hot topic of research in recent years, however, the preparation of block copolymers of polyacrylamide using ATRP method has been little studied. In this paper, polyacrylamide with reactive group bromine (PAM−Br) was synthesized by atom transfer radical polymerization (ATRP) using acrylamide (AM) as the monomer and water as the solvent, and polyacrylamide was used as the macromolecular initiator for the next reaction step. Then 9,10‐dihydro‐9‐oxa‐10‐phosphafi‐10‐oxide (DOPO) was organically modified to obtain acrylate monomers with DOPO functional groups (DOPOAA), and a mixture of water and N, N‐dimethylformamide (DMF) was used as the solvent to obtain PAM‐b‐DOPOAA block copolymers with controllable molecular mass and narrow molecular mass distribution. The effects of the molecular mass of the macromolecular initiator, polymerization time, and the molar ratio of catalyst to the ligand on the polymerization process were investigated. The structure and properties of the products were also characterized by 1H‐NMR, FTIR, XPS, DSC, TG, etc. The PAM‐b‐DOPOAA prepared by ATRP method can artificially design the length and ratio of the two chain segments, realizing one additive with two functions and the permanent existence of the function of polymer additives.

show abstract

Polyacrylamide gel synthesis, structure and optical properties of LaP3O9:Eu3+ phosphors

Cited by 10 publications

References 36 publications

Synthesis and characterization of stereolithography3Dprinting fluorescent resin

Synthesis and characterization of stereolithography3Dprinting fluorescent resin

The effect of lanthanum addition on the microstructure and mechanical properties of Mg-modified hydroxyapatite ceramics

Preparation and Characterization of PAM‐b‐DOPOAA by ATRP

Contact Info

Product

Resources

About