Preparation and characterization of CaCO₃ filler modified with double-site stearic acid for trademark fabric coated by polyamide

Abstract

A novel trademark fabric coating filler was prepared by modifying CaCO₃ with double-site stearic acid, and the double-site stearic acid modified CaCO₃ filler was applied in polyamide coating to achieve a trademark fabric with excellent printing effect and environment friendly. The double-site stearic acid and modified CaCO₃ was characterized by Fourier transform infrared (FT-IR), ¹H-NMR spectrum, mass spectra, scanning electron microscope (SEM) and thermogravimetry (TG). The modified CaCO₃ was used to prepare the polyamide coated film and trademark fabric. The results showed that the double-site stearic acid was successfully synthesized and then were encapsulated to the surfaces of CaCO₃ particles, and the lipophilic and dispersibility of CaCO₃ were improved. The modified CaCO₃ with 15 wt% double-site stearic acid could obtain a good activation degree and dispersion stability. The application properties of the polyamide coated film and trademark fabrics using modified CaCO₃ were further studied. When the concentration of double-site stearic acid was 15 wt%, the strain and stress of polyamide coated film could be improved 50.06% and 37.04%, respectively. And the trademark fabric displayed the best ink absorption, the pH value of trademark fabric was decreased 0.9 compared to unmodified CaCO₃.

Keywords:

• Trademark fabric
• filler
• double-site stearic acid
• CaCO3
• ink absorption

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Opening Project of Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Project Number: 1810.