Functional geraniol-Ca(OH)2 composite/sodium acetate alginate film on nonwoven polyethylene sheet: acetic acid gas production in response to acid

Direct preparation of gelatin microcapsules on paper surface using simple coacervation technique

“…The reference paper was prepared as described in our previous paper. 23 A mixture of CaO (8 g) and geraniol (4 g) was agitated, using a magnetic stirrer, for 5 min at 15 C. During this time, distilled water (10 mL) was added dropwise to the mixture. The geraniol-Ca(OH) 2 composite was dried at room temperature and then stored in a refrigerator at 4 C. The geraniol-Ca(OH) 2 composite (50 mg) was uniformly fixed on a 30 mm  20 mm paper.…”

“…8,22 In our previous paper, a functional paper was prepared using a geraniol-Ca(OH) 2 composite powder and a binder. 23 The preparation of sustained-fragrance-release functional papers using microcapsules and the geraniol-Ca(OH) 2 composite required two main steps. First, microcapsules containing the VEO or the powdered VEO were prepared, and then they were coated and fixed to the paper with a binder.…”

“…A technique is therefore needed for fixing VEO-containing microcapsules or VEO powders to the paper surface without microencapsulation or powderization of the VEO and coating with a binder. 17,[23][24][25][26] In this study, the direct preparation of gelatin microcapsules on the paper surface was achieved using coacervation. This technique can be used to prepare functional papers with sustained-release properties without microencapsulation and binder-coating processes, in one step.…”

Low methoxylated pectin for preparation of an intelligent functional sheet with responsiveness to sodium ions

“…By comparison, an intelligent functional sheet will give a functional response to external stimuli. We previously applied this concept to development of intelligent functional sheets that responded to humidity,16 acid,17 and sodium ion 18. With humidity as an external stimulus,16 the sheet produced color after a certain time and was able to, for instance, provide information about the moisture content of the air.…”

“…With humidity as an external stimulus,16 the sheet produced color after a certain time and was able to, for instance, provide information about the moisture content of the air. In another study, we prepared a sheet that altered the odor it released from geraniol to acetic acid gas in response to acid 17. The intelligent functional sheet, which could release moisturizer by responsive to sodium ion, was also prepared using sodium alginate 18.…”