{"id":1172,"date":"2025-04-27T09:47:29","date_gmt":"2025-04-27T09:47:29","guid":{"rendered":"https:\/\/ws-b9o6hg.wpkz.site\/?p=1172"},"modified":"2025-05-27T07:03:52","modified_gmt":"2025-05-27T07:03:52","slug":"environmentally-friendly-mmp-as-a-replacement-for-pma-part-1-evaporation-rate-comparison","status":"publish","type":"post","link":"https:\/\/www.prechems.com\/pt\/lab-reports\/environmentally-friendly-mmp-as-a-replacement-for-pma-part-1-evaporation-rate-comparison\/","title":{"rendered":"MMP amigo do ambiente como substituto do PMA (Parte 1): Compara\u00e7\u00e3o da taxa de evapora\u00e7\u00e3o"},"content":{"rendered":"<h2 id=\"gspb_heading-id-gsbp-58cd720\" class=\"gspb_heading gspb_heading-id-gsbp-58cd720\"><strong>Conce\u00e7\u00e3o experimental<\/strong><\/h2>\n\n\n\n<p>Este estudo avaliou as taxas de evapora\u00e7\u00e3o do MMP e do PMA em tr\u00eas cen\u00e1rios: solventes puros, solventes misturados e solventes misturados com nitrocelulose. As experi\u00eancias validaram o desempenho superior do MMP em aplica\u00e7\u00f5es de revestimento. As principais propriedades f\u00edsico-qu\u00edmicas s\u00e3o comparadas abaixo:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Propriedades f\u00edsico-qu\u00edmicas<\/strong><\/td><td><strong>MMP<\/strong><\/td><td><strong>PMA<\/strong><\/td><td><strong>BA<\/strong><\/td><\/tr><tr><td>F\u00f3rmula molecular<\/td><td>C\u2085H\u2081\u2080O\u2083<\/td><td>C\u2086H\u2081\u2082O\u2083<\/td><td>C<sub>6<\/sub>H<sub>12<\/sub>O\u2082<\/td><\/tr><tr><td>Peso molecular<\/td><td>118.13<\/td><td>132.16<\/td><td>116.16<\/td><\/tr><tr><td>N.\u00ba CAS<\/td><td>3852-09-3<\/td><td>108-65-6<\/td><td>123-86-4<\/td><\/tr><tr><td>Densidade (g\/cm\u00b3)<\/td><td>1.010<\/td><td>0.96<\/td><td>0.88<\/td><\/tr><tr><td>Apar\u00eancia<\/td><td>L\u00edquido transparente incolor<\/td><td>L\u00edquido transparente incolor<\/td><td>L\u00edquido transparente incolor<\/td><\/tr><tr><td>Pureza (%)<\/td><td>\u226599<\/td><td>\u226599<\/td><td>\u226599<\/td><\/tr><tr><td>Ponto de inflama\u00e7\u00e3o<br>(\u00b0C, copo fechado)<\/td><td>47<\/td><td>47.9<\/td><td>22.2<\/td><\/tr><tr><td>Ponto de ebuli\u00e7\u00e3o (\u00b0C)<\/td><td>140-148<\/td><td>154.8<\/td><td>126.1<\/td><\/tr><tr><td>\u00cdndice de refra\u00e7\u00e3o<\/td><td>1.4005-1.4040<\/td><td>1.401-1.403<\/td><td>1.398<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"gspb_heading-id-gsbp-e112bf9\" class=\"gspb_heading gspb_heading-id-gsbp-e112bf9\"><strong><strong>An\u00e1lise de dados<\/strong><\/strong><\/h2>\n\n\n\n<div class=\"wp-block-greenshift-blocks-row gspb_row gspb_row-id-gsbp-699f96c\" id=\"gspb_row-id-gsbp-699f96c\"><div class=\"gspb_row__content\"> \n<div class=\"wp-block-greenshift-blocks-row-column gspb_row__col--6 gspb_col-id-gsbp-aa8dd06\" id=\"gspb_col-id-gsbp-aa8dd06\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"728\" height=\"443\" src=\"https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-1.jpg\" alt=\"tecnologia 1\" class=\"wp-image-1174\" srcset=\"https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-1.jpg 728w, https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-1-300x183.jpg 300w, https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><figcaption class=\"wp-element-caption\">Figura 1<\/figcaption><\/figure>\n\n\n\n<p><strong><strong>1. Ensaio com solvente puro<\/strong><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tr\u00eas frascos de vidro contendo massas iguais de MMP, PMA e BA foram colocados ao ar livre sob a luz do sol.<\/li>\n\n\n\n<li>Foram efectuadas medi\u00e7\u00f5es peri\u00f3dicas do peso para calcular as taxas de volatilidade.<\/li>\n\n\n\n<li>Como mostrado na Figura 1, o MMP e o PMA apresentaram curvas de volatilidade quase id\u00eanticas.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-row-column gspb_row__col--6 gspb_col-id-gsbp-b17bace\" id=\"gspb_col-id-gsbp-b17bace\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"774\" height=\"442\" src=\"https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-2.jpg\" alt=\"tecnologia 2\" class=\"wp-image-1175\" srcset=\"https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-2.jpg 774w, https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-2-300x171.jpg 300w, https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-2-18x10.jpg 18w\" sizes=\"auto, (max-width: 774px) 100vw, 774px\" \/><figcaption class=\"wp-element-caption\">Figura 2<\/figcaption><\/figure>\n\n\n\n<p><strong>2. Ensaio de mistura de solventes<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Foram preparados tr\u00eas frascos com a seguinte composi\u00e7\u00e3o: Acetato de etilo (15%), \u00e1lcool isoprop\u00edlico (10%), acetato de butilo (15%), ciclohexanona (10%), tolueno (35%) e MMP\/PMA\/BA (15%).<\/li>\n\n\n\n<li>As amostras foram expostas \u00e0 luz solar e a perda de peso foi monitorizada.<\/li>\n\n\n\n<li>A Figura 2 confirma que o MMP e o PMA apresentam taxas de volatilidade compar\u00e1veis em sistemas de solventes mistos.<\/li>\n<\/ul>\n<\/div>\n <\/div><\/div>\n\n\n\n<div class=\"wp-block-greenshift-blocks-row gspb_row gspb_row-id-gsbp-aaf8994\" id=\"gspb_row-id-gsbp-aaf8994\"><div class=\"gspb_row__content\"> \n<div class=\"wp-block-greenshift-blocks-row-column gspb_row__col--6 gspb_col-id-gsbp-a6d7c85\" id=\"gspb_col-id-gsbp-a6d7c85\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"729\" height=\"442\" src=\"https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-3.jpg\" alt=\"tecnologia 3\" class=\"wp-image-1176\" srcset=\"https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-3.jpg 729w, https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-3-300x182.jpg 300w, https:\/\/www.prechems.com\/wp-content\/uploads\/2025\/04\/tech-3-18x12.jpg 18w\" sizes=\"auto, (max-width: 729px) 100vw, 729px\" \/><figcaption class=\"wp-element-caption\">Figura 3<\/figcaption><\/figure>\n\n\n\n<p><strong>3. Ensaio de mistura de solvente + nitrocelulose<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Os solventes misturados acima foram misturados com nitrocelulose numa propor\u00e7\u00e3o de 1:1, dissolvidos sob agita\u00e7\u00e3o e expostos \u00e0 luz solar.<\/li>\n\n\n\n<li>As medi\u00e7\u00f5es de peso revelaram taxas de volatilidade semelhantes para MMP e PMA nesta matriz, conforme ilustrado na Figura 3.<\/li>\n<\/ul>\n<\/div>\n <\/div><\/div>\n\n\n\n<h2 id=\"gspb_heading-id-gsbp-17e3c96\" class=\"gspb_heading gspb_heading-id-gsbp-17e3c96\"><strong>Conclus\u00f5es experimentais<\/strong><\/h2>\n\n\n\n<p>As taxas de evapora\u00e7\u00e3o do 3-metoxipropionato de metilo (MMP) e do acetato de \u00e9ter met\u00edlico de propilenoglicol (PMA) foram testadas utilizando o acetato de butilo (BA) como refer\u00eancia. Os dados experimentais demonstram que o MMP e o PMA apresentam taxas de evapora\u00e7\u00e3o compar\u00e1veis, tanto na forma de solvente puro como em sistemas de diluentes mistos. Isto indica que o MMP possui carater\u00edsticas de evapora\u00e7\u00e3o semelhantes \u00e0s do PMA em aplica\u00e7\u00f5es de tintas e revestimentos, apoiando o seu potencial como um substituto sustent\u00e1vel do PMA nestas ind\u00fastrias.<\/p>\n\n\n\n<h2 id=\"gspb_heading-id-gsbp-b2e31e1\" class=\"gspb_heading gspb_heading-id-gsbp-b2e31e1\"><strong>Antecedentes<\/strong><\/h2>\n\n\n\n<p>Os solventes desempenham um papel fundamental nos revestimentos e tintas, dissolvendo resinas, pigmentos e ingredientes activos, facilitando a aplica\u00e7\u00e3o e o transporte. No entanto, a evapora\u00e7\u00e3o do solvente durante a forma\u00e7\u00e3o da pel\u00edcula liberta compostos org\u00e2nicos vol\u00e1teis (COV), contribuindo para a polui\u00e7\u00e3o ambiental. As regulamenta\u00e7\u00f5es globais restringem cada vez mais as emiss\u00f5es de COVs, impulsionando a procura de solventes com maior efici\u00eancia de dissolu\u00e7\u00e3o, menor toxicidade e menor impacto ambiental.<\/p>\n\n\n\n<p>Os solventes oxigenados, como os \u00e9teres e os \u00e9steres de glicol, combinam as propriedades de dissolu\u00e7\u00e3o dos \u00e9teres e dos \u00e1lcoois\/\u00e9steres, oferecendo uma aplicabilidade mais ampla. O PMA, um solvente \u00e9ter-\u00e9ster amplamente utilizado, exemplifica esta categoria. Avan\u00e7os recentes identificaram o 3-metoxipropionato de metilo (MMP) como uma alternativa superior e sustent\u00e1vel ao PMA.<\/p>\n\n\n\n<p>Para mais informa\u00e7\u00f5es sobre solventes funcionais, visite:&nbsp;<a href=\"https:\/\/www.prechems.com\/pt\/products\/functional-solvents\/mmp-solvent\/\">Solvente PREC MMP<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>This study evaluated the evaporation rates of MMP and PMA under three scenarios: pure solvents, blended solvents, and blended solvents with nitrocellulose. The experiments validated MMP\u2019s superior performance in coating applications. Key physicochemical properties are compared below: Physicochemical Properties MMP PMA BA Molecular Formula C\u2085H\u2081\u2080O\u2083 C\u2086H\u2081\u2082O\u2083 C6H12O\u2082 Molecular Weight 118.13 132.16 116.16 CAS No. 3852-09-3 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1173,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Environmentally Friendly MMP as a Replacement for PMA (Part 1): Evaporation Rate Comparison\u200b","_seopress_titles_desc":"This study evaluated the evaporation rates of MMP and PMA under three scenarios: pure solvents, blended solvents, and blended solvents with nitrocellulose.","_seopress_robots_index":"","_gspb_post_css":"#gspb_row-id-gsbp-699f96c,#gspb_row-id-gsbp-aaf8994{justify-content:space-between;margin-top:0;margin-bottom:0;display:flex;flex-wrap:wrap}#gspb_row-id-gsbp-699f96c>.gspb_row__content{display:flex;justify-content:space-between;margin:0 auto;width:100%;flex-wrap:wrap}.gspb_row{position:relative}div[id^=gspb_col-id]{box-sizing:border-box;position:relative;padding:var(--gs-row-column-padding, 15px min(3vw, 20px))}#gspb_col-id-gsbp-aa8dd06.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-aa8dd06.gspb_row__col--6{width:100%}}#gspb_col-id-gsbp-b17bace.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-b17bace.gspb_row__col--6{width:100%}}#gspb_row-id-gsbp-aaf8994>.gspb_row__content{display:flex;justify-content:space-between;margin:0 auto;width:100%;flex-wrap:wrap}body.gspb-bodyfront #gspb_row-id-gsbp-699f96c>.gspb_row__content,body.gspb-bodyfront #gspb_row-id-gsbp-aaf8994>.gspb_row__content{width:var(--theme-container-width, 1200px);max-width:var(--theme-normal-container-max-width, 1200px)}#gspb_col-id-gsbp-a6d7c85.gspb_row__col--6{width:50%}@media (max-width:575.98px){#gspb_col-id-gsbp-a6d7c85.gspb_row__col--6{width:100%}}","footnotes":""},"categories":[14],"tags":[],"class_list":{"0":"post-1172","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-lab-reports"},"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/posts\/1172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/comments?post=1172"}],"version-history":[{"count":0,"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/posts\/1172\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/media\/1173"}],"wp:attachment":[{"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/media?parent=1172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/categories?post=1172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.prechems.com\/pt\/wp-json\/wp\/v2\/tags?post=1172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}