Mechanical and thermal properties of low density polyethylene composites filled with dye‐loaded shell powder

Abstract

To achieve reinforcement and coloring in one combined process of polymer production, a dye-loaded shell powder (DPSP) based on Congo red and pearl shell powder was prepared and used as a versatile bio-filler in low-density polyethylene (LDPE). The DPSP was characterized by means of X-ray diffraction, Fourier transform infrared spectroscopy and thermogravimetric analysis. The mechanical, thermal, and colorimetric properties of prepared LDPE/DPSP composites were investigated as well. Adding DPSP could significantly increase the strength and stiffness of LDPE composites while giving an outstanding coloring performance. Moreover, the impact strength of LDPE composites was improved at lower filler loading rate, and the maximum incorporation content could reach 10 wt % with a good balance between toughness and stiffness of LDPE composites. The thermal performance studies confirmed an increase in thermal stability and heat resistance of LDPE composites with the incorporation of DPSP. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44118.

Cure characteristics, mechanical, thermal, and coloring properties of natural rubber/dye‐loaded shell powder composites

“…The temperature of the first weightlessness peak was 380.5 °C, much higher than the vulcanizing temperature of NR, indicating that the CR dye can fully meet the processing requirement of NR. The good thermal stability of the dye can be attributed to rich aromatic rings and conjugated structure in its molecule …”

“…The characteristic peaks of CR could not be found in Figure , which was due to the quite small amount of the dye adsorbed on SP (less than 0.5%). The sharp weightlessness in the temperature range of 550 to 790 °C was ascribed to the decomposition of calcium carbonate . The decomposition peak temperature of DSP (∼780 °C) was higher than that of SP (∼768 °C).…”

“…What is more, due to the special organic component of shells, SP exhibited a good adsorption capacity for dyes and mental ions, and thus the dye‐loaded SP can be employed as a filler and pigment for polymers. Ge et al . confirmed that dye‐loaded pearl SP significantly enhanced the strength and stiffness of low density polyethylene and imparted excellent color performance to it at the same time.…”

A new use for glassy carbon: Development of LDPE/glassy carbon composites for antistatic packaging applications

“…This parameter decreased from 346.3 to 18.0 mm, as the GC content increased to 20 wt %. This effect is due to the incorporation of rigid filler particles restricting the relative movement of the polymer molecules, which is the characteristic of reinforced thermoplastic composites . The addition of GC particles with no elongation to the LDPE matrix makes the composites stiffer.…”

Filling and coloring effect of pearl shell powder and dye‐loaded pearl shell powder on polypropylene

“…Nevertheless, owing to its intrinsic drawbacks in dimensional and thermal stability, stiffness, strength, and impact toughness, the usefulness of PP as an engineering plastic is still limited . To further broaden its application, strenuous efforts have been endeavored by the introduction of fillers into PP matrix to develop PP composites with improved performance, such as thermal and electrical characteristics, flame retardancy, color, and mechanical properties …”