Preparation and controllable release of chitosan/vanillin microcapsules and their application to cotton fabric

Abstract

The textile industries have incorporated perfume microencapsulation technology to improve their products. However, certain industrial microcapsules show low encapsulation capacity and low material stability. In this study, vanillin/chitosan microcapsules were prepared via spray‐drying, and the encapsulation efficiency and loading capacity of the microcapsule were 50.69% and 30.31%, respectively. Quantum–chemical calculations confirm the interactions of hydrogen bonds between vanillin and chitosan. Their applicability to the cotton fabric with citric acid as the cross‐linking reagent has been investigated. The structure of the microcapsule‐treated cotton fabric has been characterized with various physico‐chemical techniques. The results confirm the microcapsules have been successfully grafted onto the cotton fabrics. The release experiments show that 21.9% vanillin was retained under 65°C and 80% humidity conditions and 8.6% vanillin still existed after 14 washes. Copyright © 2013 John Wiley & Sons, Ltd.

Encapsulation of l-menthol in hydroxypropyl-β-cyclodextrin and release characteristics of the inclusion complex

“…The negative BE value means energy release during inclusion complex formation. The more negative the binding energy is, the more thermodynamically favorable is the inclusion complex 22 . The most stable l-menthol-HP-β-CD inclusion complex is at 3.5 × 10 -10 m. The MM2-computed structures for energy minima are shown in Figure 1(b).…”

4. Emerging application of vanillin microcapsules

“…Spray drying has been the most employed technique, possibly because it is the most commonly used microencapsulation method for food ingredients [16]; chitosan has been used as a wall material in order to encapsulate vanillin by this technique [17]. Mixtures of maltodextrin with gum arabic have been also employed in spraydrying processes [18].…”

“…The antibacterial and aromatic properties of vanillin could be used in several fabric products [17,24]. The antibacterial and aromatic properties of vanillin could be used in several fabric products [17,24].…”

Covalent bonding and photochromic properties of double-shell polyurethane-chitosan microcapsules crosslinked onto cotton fabric

“…Application of DSPCM onto cotton fabric was carried out by following a modification of the previously reported procedures (Abdel-Mohsen et al 2012; Alonso et al 2010;Yang et al 2014). Cotton fabrics were used without any further softener or other additives in the finishing bath.…”

“…Chitosan was applied on cotton fabric or on chemically modified cotton (having reactive -CHO or carboxymethyl groups) to obtain easy-care characteristics and bioactive textiles (El-tahlawy et al 2005;Hebeish et al 2011;Kim et al 2003;Kulkarni et al 2010;Mocanu et al 2013). Vanillin/chitosan microcapsules were applied to the cotton fabric with citric acid as the crosslinking reagent (Yang et al 2014).…”