Preparation of self‐adhesive microcapsules and their application in functional textiles

Abstract

This work is devoted to the preparation of self‐adhesive microcapsules and their mechanism of mutual sway with cotton fabrics. Chitosan oligosaccharide (COS) microcapsules were prepared by ionic gelation method and encapsulated with functional substances (lavender oils) to obtain microcapsules with multiple properties (aromatic). The textile auxiliary guar gum (GG) induce the microcapsules to aggregate into a network structure, which increases the chance of microcapsule adhesion on cotton fabrics. Fe3+ further enhance the binding of microcapsules to cotton fabrics through coordination, while ethylenediaminetetraacetic acid (EDTA) can disrupt this binding, thus achieving controlled self‐adhesion. During the five self‐adhesive cycles, the weight gain rate of the microcapsules was 16.00%–17.00% and aromatic content between 0.600–0.700 mg/g when they adhered to the cotton fabric by coordination. After EDTA disrupted the adhesion of the microcapsules, the weight gain rate became 3.00%–3.50% and the content of aromatic was 0.041–0.058 mg/g. Therefore, the microcapsules prepared in this study can achieve multiple recyclable adhesion and de‐adhesion on cotton fabrics by Fe3+ and EDTA, providing new ideas for functionalization and diversification of textiles.

Ink-Jet Printing of Colored Latex Inks with a “Soft” Core–“Hard” Shell Structure

“…A large number of particles will be extruded and piled up in the pore due to the small pore size of the filter membrane. According to the “three stages of film formation theory, , the particles will deform after extrusion, − and the outlines between the particles are not clear, forming continuous films (Figure d), blocking the pores, and the inks cannot be filtered normally at a low T g (24–38 °C). As the T g increased (38–48 °C), the deformed tendency of particles was not obvious and couldnot form continuous films at the initial filtration (Figure e).…”

Application of Lavender-Oil Microcapsules to Functionalized PET Fibers

“…There is a wide range of motivations behind studies with micro/nanocapsules to produce attributes that involve the controlled transfer of active compounds under certain conditions [ 2 ]. This technology protects encapsulated substances against external factors, providing the durability of the active principle and the stability of the properties of the textiles, as well as adding value to the product [ 3 , 4 ]. The global pandemic crisis caused by COVID-19 drew attention to the necessity of human protection and led to a search for new ways of reducing virus transfer.…”

“…Studies have been conducted on the use of microcapsules with different polymers to protect and release many kinds of active principles and for many applications, such as cosmetics [ 15 ], insect repellents [ 16 , 17 ], personal care [ 4 ], and medical and pharmaceutical treatments [ 18 , 19 ]. In comparison with synthetic polymers, biopolymers used as microcapsule shells have been preferred due to their biodegradability, renewability, nontoxicity, safety, and biocompatibility [ 20 , 21 ].…”

“…80 documents with “microcapsule and textile and lavender” as keywords, according to Scopus (2022). These include studies of the oil’s microencapsulation process [ 29 , 30 , 31 , 32 ], textile applications [ 4 , 33 ], and release [ 32 ].…”