Thermal and photocatalytic stability enhancement mechanism of poly(propylene carbonate) due to Cu(I) impurities

Uzunlar, Erdal; Kohl, Paul A.

doi:10.1016/j.polymdegradstab.2012.05.034

Cited by 6 publications

(2 citation statements)

References 57 publications

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“…The experimentally measured amount of Cu ions in the PPC film was about 21 ions per polymer chain, each of which contained about 2100 monomers [28]. Uzunlar et al showed that the improved thermal stability on copper surfaces is unique to PPC films with PAGs containing iodonium-based cations, rather than PAGs with noniodonium-based cations (i.e., sulfonium-based cations) [63]. It was also shown that the thermal stability effect involved the iodonium cation.…”

Section: Types Of Polymersmentioning

confidence: 99%

Decomposable and Template Polymers: Fundamentals and Applications

Uzunlar

Schwartz

Phillips

et al. 2016

Journal of Electronic Packaging

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Polymers can be used as temporary place holders in the fabrication of embedded air gaps in a variety of electronic devices. Embedded air cavities can provide the lowest dielectric constant and loss for electrical insulation, mechanical compliance in devices where low-force deformations are desirable, and can temporarily protect movable parts during processing. Several families of polymers have been used as sacrificial, templating polymers including polycarbonates, polynorbornenes (PNBs), and polyaldehydes. The families can be distinguished by chemical structure and decomposition temperature. The decomposition temperature ranges from over 400 °C to below room temperature in the case of low ceiling temperature polymers. Overcoat materials include silicon dioxide, polyimides, epoxy, and bis-benzocyclobutene (BCB). The methods of air-gap fabrication are discussed. Finally, the use of photoactive compounds in the patterning of the sacrificial polymers is reviewed.

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Section: Types Of Polymersmentioning

confidence: 99%

Decomposable and Template Polymers: Fundamentals and Applications

Uzunlar

Schwartz

Phillips

et al. 2016

Journal of Electronic Packaging

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“…Various characteristics like thermal and mechanical strength are also been into studies further leading to improvements in the parts or products to be developed [2]. The additives in the layered composition had gone investigations [3] with respects to the pressure and temperature ranging conditions [4]. It is evident that researched been carried out on molecular affinity of the cell along with mechanical properties [5] by additive manufacturing techniques.…”

Section: Introductionmentioning

confidence: 99%

Effect of Infill Percentage on Properties of FDM Printed GPLA/PETGs

Sridhar,

Teja,

Mouli

et al. 2019

IJEAT

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Abstract: Additive Manufacturing termed by ASTM standard referred to in short as, the technology of fabricating a model based on creating a three-dimensional Computer-Aided Design structure. In the context of developing a product from digital data directly, widely involved various technologies. Amongst them, one being Fused Deposition Modelling (FDM) which supervises the principle of AM, is widely known for developing a polymer-constructed sturdiest range of materials or parts are having operative mechanical properties. Even though, the main problem exaggerates that, the quality of the output still denies due to which void parts are created from bubbles trapped leading to failure of parts under mechanical stresses. Since with 15% infill, stronger parts are estimated and their mechanical properties are studied. Since the work signifies the influence of 15% infill on mechanical properties in estimating stronger products by layered addition process. The experimental methodology is based on structural infill parameters determining goal in achieving and studying material mechanical properties.

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