Polyamide microcapsules containing jojoba oil prepared by inter-facial polymerization

Area of Science:

• Materials Science
• Polymer Chemistry
• Nanotechnology

Background:

• Microencapsulation is crucial for controlled release and material protection.
• Jojoba oil offers a biocompatible and stable matrix for microcapsule formulation.
• Polyamide microcapsules are desirable for their mechanical strength and chemical resistance.

Purpose of the Study:

• To prepare jojoba oil-based polyamide microcapsules via interfacial polycondensation.
• To investigate the influence of formulation and process parameters on microcapsule characteristics.
• To evaluate the impact of ultrasonic irradiation on microcapsule size reduction.

Main Methods:

• Interfacial polycondensation (oil-in-water direct method) was employed for microcapsule synthesis.
• Scanning Electron Microscopy (SEM) was used for morphological analysis.
• Ultrasonic irradiation was tested during the dispersion phase.

Main Results:

• Microcapsule morphology was significantly influenced by the choice of monomers.
• 1,6-hexamethylenediamine (HMDA) and terephthaloyl dichloride (TDC) yielded microcapsules with smooth and dense surfaces.
• Ultrasonic irradiation showed potential for further reducing microcapsule size.

Conclusions:

• The study successfully prepared jojoba oil-based polyamide microcapsules.
• Monomer selection is a key factor in controlling microcapsule surface properties.
• Process optimization, including ultrasonic treatment, can refine microcapsule characteristics for specific applications.