Physical properties of MgCl2-filled PMMA films for optical applications

Abdelrazek, E.M.

doi:10.1016/j.physb.2004.05.015

Cited by 17 publications

(15 citation statements)

References 19 publications

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“…[25] The endothermic peak at 225°C is attributed to the transition of large-scale mobility of the polymer moieties' bulky constituent, and the peak at 283°C may refer to the dislocation of polymeric substances. [26] The endothermic peak at 368°C is related to the total decomposition of PMMA constituents to carbon that is consistent with thermogravimetric analysis (TGA) observations of PMMA shown in Supporting Information Figure 1b. Due to the large interfacial areas of the ZnO QDs (<10 nm of ZnO) even at relatively low filler volume-fraction, the T g of PZHM exhibits a value lower than that of the other reported nanocomposites.…”

supporting

confidence: 85%

Bulk Synthesis of Transparent and Homogeneous Polymeric Hybrid Materials with ZnO Quantum Dots and PMMA

et al. 2007

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supporting

confidence: 85%

Bulk Synthesis of Transparent and Homogeneous Polymeric Hybrid Materials with ZnO Quantum Dots and PMMA

et al. 2007

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“…Good solubility of MgCl 2 at used percentages in DMF solution similar to other studies was observed [11,12]. This can be attributed to polar characteristic of DMF and its high dielectric constant.…”

Section: Preparation Of Electrospinning Solutionssupporting

confidence: 86%

“…It was observed when 1 and 3 wt% of MgCl 2 is added to the pure sample, the absorption intensity of bands is increased. As mentioned in other studies, the observed increase in the absorption intensity of the bands specially in carbonyl group can be attributed to the Mg ions attached to C=O groups as well as to the CH 3 groups linked to the PMMA molecules in the nanocomposite samples [12]. However, when the amount of MgCl 2 was increased to more than 3 wt%, the absorption intensity was reduced maybe because of aggregation and non uniform distribution of Mg ions among PMMA molecular chains.…”

Section: Composite Nanofibers Morphologysupporting

confidence: 50%

“…For instance a clear shift from 1728 cm -1 to 1735 cm -1 for carbonyl group has been identified. It can be said that the main reason for the changes in the composite structures can be assigned to the attachment of Mg ions to C=O groups at 1730 cm -1 in the side chain of PMMA molecules [12].…”

Section: Composite Nanofibers Morphologymentioning

confidence: 99%

“…However, these techniques essentially have encountered several challenges such as environmental hazards, high-price, and various difficulties in synthesis and fabrication especially at industrial scales. The range of PMMA applications can be extended by incorporation of inorganic salts regarding to high solubility, lower-price, more friendly environmental, and easier processing comparing to other approaches [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Enhancement in glass transition and tensile properties of PMMA nanofibres by incorporation of MgCl2 in the electrospun polymer solution

2015

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In this study, an effective approach for enhancing the glass transition and mechanical properties of poly(methyl methacrylate)(PMMA) composite nanofibers by incorporation of MgCl 2 in the electrospun solutions has been presented. Pure PMMA and various compositions of MgCl 2 /PMMA nanofibers were successfully fabricated by electrospinning process under optimized conditions. SEM images indicated that the nanocomposite sample containing 1 wt% MgCl 2 has the lowest average diameter with narrow distribution. According to FTIR spectra of the fabricated composites, considerable increase in absorption intensity of most bands were indicated while clear shift from 1728 cm -1 to 1735 cm -1 related to carbonyl group has been identified. DSC thermograms demonstrated 10 o C to 25 o C enhancement in the glass transition temperature for various nanocomposite samples. The results of the mechanical properties of the composite nanofibers sample with 1 wt% MgCl 2 revealed an enhancement in the tensile strength of ~151 % from 0.78±0.08 MPa to 1.96±0.10 MPa, and an increase in the modulus has been seen by ~236 % from 27.48±4.20 MPa to 92.25±8.50 MPa, as compared to the pure PMMA nanofibers.

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Fabrication of composite films with poly(methyl methacrylate) and incompletely condensed cage‐silsesquioxane fillers

Yuasa

Sato

Imoto

et al. 2017

J of Applied Polymer Sci

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Polyhedral oligomeric silsesquioxane (POSS) is a promising nanofiller for tuning properties of optically transparent polymer materials. On the other hand, traditional completely condensed POSS (CC-POSS) has a fundamental problem for fabricating optically transparent composite films; CC-POSS has high crystallinity due to its symmetrical structure, resulting in aggregation in the polymer matrices. In this work, we have demonstrated that incompletely-condensed POSS (IC-POSS), which has an open-cage structure, can be well dispersed in a poly(methyl methacrylate) (PMMA) matrix. IC-POSS with various substituents were readily synthesized, and their composite films of PMMA were fabricated by solution-casting method. High transparency was achieved with up to 30 wt % of the IC-POSS fillers, while the CC-POSS analogues caused phase separation with 10 wt % loading. Addition of the IC-POSS fillers can improve thermal stability and control glass transition temperature by the substituent structure. Additionally, refractive index was tuned from 1.485 to 1.513.

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Physical properties of MgCl2-filled PMMA films for optical applications

Cited by 17 publications

References 19 publications

Bulk Synthesis of Transparent and Homogeneous Polymeric Hybrid Materials with ZnO Quantum Dots and PMMA

Bulk Synthesis of Transparent and Homogeneous Polymeric Hybrid Materials with ZnO Quantum Dots and PMMA

Enhancement in glass transition and tensile properties of PMMA nanofibres by incorporation of MgCl2 in the electrospun polymer solution

Fabrication of composite films with poly(methyl methacrylate) and incompletely condensed cage‐silsesquioxane fillers

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