Effect of ionic strength on amorphous carbon during chemical mechanical planarization

Oh, Seungjun; Shin, Cheolmin; Kwak, Donggeon; Kim, Eungchul; Kim, Juhwan; Bae, Chulwoo; Kim, Taesung

doi:10.1016/j.diamond.2022.109124

Cited by 3 publications

(2 citation statements)

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“…These results are very significant when considering the mechanical properties of the composite films. However, spherical particles were observed, and the surface roughness increased due to aggregation as the concentration of SA increased ( Figure 2 B–D) [ 19 ]. The optical properties of the LDPE/LLDPE blend films containing different SA contents were determined by measuring the transmittance in the 200–1100 nm range, and the results are presented in Figure 3 .…”

Section: Resultsmentioning

confidence: 99%

“…The purpose of this study was to improve both the thermal and mechanical properties of the LDPE/LLDPE blend films; hence, LDPE/LLDPE/SA composites were prepared using a twin-screw extruder to prepare an LDPE/LLDPE/SA (0–1.5 wt.%) masterbatch, and then an LDPE/LLDPE/SA (0–1.5 wt.%) film was prepared using the blown method [ 18 , 19 ]. The effects of various SA contents on the morphology, draw ratio, and mechanical and thermal characteristics of the prepared composite films were studied.…”

Section: Introductionmentioning

confidence: 99%

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Blown Composite Films of Low-Density/Linear-Low-Density Polyethylene and Silica Aerogel for Transparent Heat Retention Films and Influence of Silica Aerogel on Biaxial Properties

et al. 2022

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Blown films based on low-density polyethylene (LDPE)/linear low-density polyethylene (LLDPE) and silica aerogel (SA; 0, 0.5, 1, and 1.5 wt.%) were obtained at the pilot scale. Good particle dispersion and distribution were achieved without thermo oxidative degradation. The effects of different SA contents (0.5–1.5 wt.%) were studied to prepare transparent-heat-retention LDPE/LLDPE films with improved material properties, while maintaining the optical performance. The optical characteristics of the composite films were analyzed using methods such as ultraviolet–visible spectroscopy and electron microscopy. Their mechanical characteristics were examined along the machine and transverse directions (MD and TD, respectively). The MD film performance was better, and the 0.5% composition exhibited the highest stress at break. The crystallization kinetics of the LDPE/LLDPE blends and their composites containing different SA loadings were investigated using differential scanning calorimetry, which revealed that the crystallinity of LDPE/LLDPE was increased by 0.5 wt.% of well-dispersed SA acting as a nucleating agent and decreased by agglomerated SA (1–1.5 wt.%). The LDPE/LLDPE/SA (0.5–1.5 wt.%) films exhibited improved infrared retention without compromising the visible light transmission, proving the potential of this method for producing next-generation heat retention films. Moreover, these films were biaxially drawn at 13.72 MPa, and the introduction of SA resulted in lower draw ratios in both the MD and TD. Most of the results were explained in terms of changes in the biaxial crystallization caused by the process or the influence of particles on the process after a systematic experimental investigation. The issues were strongly related to the development of blown nanocomposites films as materials for the packaging industry.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%