{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T16:24:49Z","timestamp":1784046289951,"version":"3.55.0"},"reference-count":38,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2023,3,30]],"date-time":"2023-03-30T00:00:00Z","timestamp":1680134400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Postgraduate Research &amp; Practice Innovation Program of Jiangsu Province","award":["KYCX22_1098"],"award-info":[{"award-number":["KYCX22_1098"]}]},{"name":"Postgraduate Research &amp; Practice Innovation Program of Jiangsu Province","award":["BK20201386"],"award-info":[{"award-number":["BK20201386"]}]},{"name":"Natural Science Foundation of Jiangsu Province","award":["KYCX22_1098"],"award-info":[{"award-number":["KYCX22_1098"]}]},{"name":"Natural Science Foundation of Jiangsu Province","award":["BK20201386"],"award-info":[{"award-number":["BK20201386"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>With the development of science and technology, the function of waterborne coatings has been advanced to a higher standard, which requires researchers to innovate and expand the research on them. Aloe-emodin is a natural material with antibacterial properties. Applying its antibacterial effect to the coating can enrich its function and meet the diversified needs of consumers. In this study, the urea-formaldehyde resin was used as the wall material and the aloe-emodin as the core material to prepare the microcapsules. The coating rate, yield, and morphology of the microcapsules were characterized. Through an orthogonal experiment and a single factor experiment, the optimization scheme of microcapsule preparation was explored. The results indicated that the optimum preparation process of aloe-emodin microcapsules was as follows: the mass ratio of core material to wall material was 1:15, the molar ratio of urea to formaldehyde was 1:1.2, the temperature of microencapsulation was 50 \u00b0C, and the stirring speed of microencapsulation was 600 rpm. On this basis, the aloe-emodin microcapsules with 0%, 1.0%, 3.0%, 6.0%, 9.0%, and 12.0% contents were added to the waterborne coating to prepare the paint films, and their influence on the antibacterial and optical properties of the waterborne paint films was explored. The results demonstrated that the aloe-emodin microcapsules had antibacterial activity. When the content was 6.0%, the comprehensive performance of the film was better. The antibacterial rate of the film against Escherichia coli was 68.1%, and against Staphylococcus aureus it was 60.7%. The color difference of the film was 59.93, and the glossiness at 60\u00b0 was 7.8%. In this study, the microcapsules that can improve the antibacterial performance of water-based coatings were prepared, which can expand the application of water-based coatings and provide a reference for the study of the functionalization of water-based coatings.<\/jats:p>","DOI":"10.3390\/polym15071728","type":"journal-article","created":{"date-parts":[[2023,3,31]],"date-time":"2023-03-31T01:37:02Z","timestamp":1680226622000},"page":"1728","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Preparation of Aloe-Emodin Microcapsules and Its Effect on Antibacterial and Optical Properties of Water-Based Coating"],"prefix":"10.3390","volume":"15","author":[{"given":"Nan","family":"Huang","sequence":"first","affiliation":[{"name":"Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China"},{"name":"College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoxing","family":"Yan","sequence":"additional","affiliation":[{"name":"Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China"},{"name":"College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing 210037, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Han, M.J.N., and Kim, M.J. (2019). Green environments and happiness level in housing areas toward a sustainable life. Sustainability, 11.","DOI":"10.3390\/su11174768"},{"key":"ref_2","first-page":"11615","article-title":"City garden environment research: Optimal design can improve the therapeutic benefit of therapy garden","volume":"29","author":"Zhou","year":"2020","journal-title":"Fresen. Environ. Bull."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Liu, Q.Q., Gu, Y.T., Xu, W., Lu, T., Li, W.J., and Fan, H.B. (2021). Compressive Properties of Green Velvet Material Used in Mattress Bedding. Appl. Sci., 11.","DOI":"10.3390\/app112311159"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Liu, Q.Q., Gao, D., and Xu, W. (2021). Effect of Paint Process on the Performance of Modified Poplar Wood Antique. Coatings, 11.","DOI":"10.3390\/coatings11101174"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"907","DOI":"10.1002\/mawe.202000227","article-title":"Effects of Freezing and Steam Treatments on the Permeability of Populus Tomentosa","volume":"52","author":"Xu","year":"2021","journal-title":"Mater. Werkst."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Liu, Q.Q., Gu, Y.T., Xu, W., Lu, T., Li, W.J., and Fan, H.B. (2022). Compressive Properties of Polyurethane Fiber Mattress Filling Material. Appl. Sci., 12.","DOI":"10.3390\/app12126139"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Liu, Q.Q., Gao, D., and Xu, W. (2022). Effect of Polyurethane Non-Transparent Coating Process on Coating Performance Applied on Modified Poplar. Coatings, 12.","DOI":"10.3390\/coatings12010039"},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Liu, Q.Q., Gao, D., and Xu, W. (2021). Influence of the Bottom Color Modification and Material Color Modification Process on the Performance of Modified Poplar. Coatings, 11.","DOI":"10.3390\/coatings11060660"},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Maury-Ramirez, A., Flores-Colen, I., and Kanematsu, H. (2020). Advanced coatings for buildings. Coatings, 10.","DOI":"10.3390\/coatings10080728"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"417","DOI":"10.2112\/SI103-085.1","article-title":"Research and application of anticorrosive coating for reinforced concrete of coastal buildings","volume":"103","author":"Xiao","year":"2020","journal-title":"J. Coastal. Res."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1155","DOI":"10.1080\/08927014.2014.972951","article-title":"Long-term microfouling on commercial biocidal fouling control coatings","volume":"30","author":"Muthukrishnan","year":"2014","journal-title":"Biofouling"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"42607","DOI":"10.1021\/acsami.9b15031","article-title":"Fabrication of robust antibacterial coatings based on an organic-inorganic hybrid system","volume":"11","author":"Cheng","year":"2019","journal-title":"ACS Appl. Mater. Inter."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/j.matlet.2019.02.121","article-title":"A novel method of fabricating an antibacterial aluminum-matrix composite coating doped graphene\/silver-nanoparticles","volume":"245","author":"Zhao","year":"2019","journal-title":"Mater. Lett."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/j.porgcoat.2017.02.012","article-title":"Preparation of organicinorganic hybrid silica nanoparticles with contact antibacterial properties and their application in UV-curable coatings","volume":"106","author":"Ge","year":"2017","journal-title":"Prog. Org. Coat."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Musil, J. (2017). Flexible antibacterial coatings. Molecules, 22.","DOI":"10.3390\/molecules22050813"},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Liu, C., and Xu, W. (2022). Effect of Coating Process on Properties of Two-Component Waterborne Polyurethane Coatings for Wood. Coatings, 12.","DOI":"10.3390\/coatings12121857"},{"key":"ref_17","first-page":"186","article-title":"Preparation of microcapsules for core materials and their effects on properties of waterborne coatings on basswood","volume":"7","author":"Yan","year":"2022","journal-title":"J. For. Eng."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1075","DOI":"10.1166\/sam.2022.4319","article-title":"Preparation of a new type of epoxy resin for sports equipment","volume":"14","author":"Li","year":"2022","journal-title":"Sci. Adv. Mater."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1080\/00387010.2013.874358","article-title":"Fourier transform infrared spectroscopic study of pesticide microcapsules influenced by formaldehyde to urea ratio","volume":"48","author":"Wang","year":"2015","journal-title":"Spectrosc. Lett."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Yan, X.X., Han, Y., and Yin, T.Y. (2021). Synthesis of urea-formaldehyde microcapsule containing fluororesin and its effect on performances of waterborne coatings on wood surface. Polymers, 13.","DOI":"10.3390\/polym13111674"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"339","DOI":"10.14314\/polimery.2018.5.2","article-title":"Poly(urea-formaldehyde) microcapsules\u2014Synthesis and influence of stirring speed on capsules size","volume":"63","author":"Bolimowski","year":"2018","journal-title":"Polimery"},{"key":"ref_22","first-page":"115","article-title":"Study on UV curable tung oil based waterborne polyurethane wood coatings","volume":"7","author":"Liu","year":"2022","journal-title":"J. For. Eng."},{"key":"ref_23","first-page":"183","article-title":"Effects of different proportions of mixed microcapsules on aging resistance and self-healing properties of waterborne coatings","volume":"7","author":"Han","year":"2022","journal-title":"J. For. Eng."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1116","DOI":"10.1080\/00405000.2019.1686268","article-title":"Molecular characterisation and antibacterial activity of Aloe barbadensis miller on textiles","volume":"111","author":"Das","year":"2020","journal-title":"J. Text. Inst."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"739","DOI":"10.1007\/s10973-019-09082-y","article-title":"Microcalorimetric evaluation of the effects of three anthraquinone derivatives from Chinese Rhubarb and the synergistic effect of the mixture on Staphylococcus aureus","volume":"141","author":"Hu","year":"2020","journal-title":"J. Therm. Anal. Calorim."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"266","DOI":"10.1007\/s40242-022-2179-6","article-title":"Antibacterial and alkali-responsive cationic waterborne polyurethane based on modification of aloe emodin","volume":"39","author":"Xiong","year":"2023","journal-title":"Chem. Res. Chin. Univ."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"6671","DOI":"10.1007\/s00253-017-8403-5","article-title":"Aloe-emodin inhibits Staphylococcus aureus biofilms and extracellular protein production at the initial adhesion stage of biofilm development","volume":"101","author":"Xiang","year":"2017","journal-title":"Appl. Microbiol. Biot."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"172","DOI":"10.4315\/0362-028X.JFP-17-177","article-title":"Surface attachment of natural antimicrobial coatings onto conventional polypropylene nonwoven fabric and its antimicrobial performance assessment","volume":"81","author":"Ding","year":"2018","journal-title":"J. Food. Protect."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Donkor, A.M., Donkor, M.N., and Kuubabongnaa, N. (2020). Evaluation of anti-infective potencies of formulated aloin A ointment and aloin A isolated from Aloe barbadensis Miller. BMC Chem., 14.","DOI":"10.1186\/s13065-020-0659-7"},{"key":"ref_30","first-page":"1092","article-title":"Antibacterial activity of aloe emodin and aloin A isolated from Aloe excelsa","volume":"5","author":"Coopoosamy","year":"2006","journal-title":"Afr. J. Biotechnol."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"157","DOI":"10.3389\/fcimb.2019.00157","article-title":"Aloe-emodin attenuates staphylococcus aureus pathogenicity by interfering with the oligomerization of alpha-toxin","volume":"9","author":"Jiang","year":"2019","journal-title":"Front. Cell. Infect. Microbiol."},{"key":"ref_32","unstructured":"(2008). Test Method and Effect for Antibacterial Capability of Paints Film (Standard No. GB\/T 21866-2008)."},{"key":"ref_33","unstructured":"(2016). National Food Safety Standard Food Microbiological Examination: Aerobic Plate Count (Standard No. GB\/T 4789.2-2016)."},{"key":"ref_34","unstructured":"(1990). Methods for Measuring the Colour of Paint Films. Part III: Calculation of Colour Differences (Standard No. GB\/T 11186.3-1989)."},{"key":"ref_35","doi-asserted-by":"crossref","unstructured":"(2013). Test of Surface Coatings of Furniture (Standard No. GB\/T 4893.4-2013).","DOI":"10.1016\/S1364-5439(13)70163-1"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"203","DOI":"10.1016\/j.partic.2015.05.007","article-title":"Preparation and characterization of urea-formaldehyde resin\/reactive kaolinite composites","volume":"24","author":"Chen","year":"2016","journal-title":"Particuology"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"2016","DOI":"10.1002\/app.22161","article-title":"Characterization of phenol-urea-formaldehyde resin by infine FTIR spectroscopy","volume":"99","author":"Poljansek","year":"2006","journal-title":"J. Appl. Polym. Sci."},{"key":"ref_38","first-page":"385","article-title":"Structural characterization and spectroscopic analysis of the aloin","volume":"34","author":"Xie","year":"2014","journal-title":"Spectrosc. Spect. Anal."}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/15\/7\/1728\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T19:07:34Z","timestamp":1760123254000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/15\/7\/1728"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,3,30]]},"references-count":38,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2023,4]]}},"alternative-id":["polym15071728"],"URL":"https:\/\/doi.org\/10.3390\/polym15071728","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,3,30]]}}}