Sabões vegetais, demais
Autor: EXCLUSIVA MINERAÇÃO E SIDERURGIA | Publicado: 2016-11-09T11:58:00-08:00


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Sabão
"perfeito" é origem vegetal e polui menos

Redação
do Site Inovação Tecnológica&nbsp;-&nbsp; 28/10/2016

















Bolhas de ar sobre uma mistura de
água e do novo sabão - ele espuma mesmo em água fria ou em água dura.
[Imagem:&nbsp;Paul J. Dauenhauer]







Sabão
vegetal

Químicos sintetizaram uma nova
molécula de sabão que eles batizaram de "sabão perfeito".



O composto é feito a partir de
fontes renováveis, o que permitirá reduzir drasticamente o número de produtos
químicos em produtos de higiene e limpeza, diminuindo seu impacto sobre o meio
ambiente.



O sabão também funcionou melhor
do que os sabões comerciais em condições difíceis, como sob água fria e água
dura - água dura é aquela que possui sais de cálcio, magnésio e ferro, que são
insolúveis em água e reagem com os sabões, produzindo compostos insolúveis.



"Esta pesquisa pode ter um
grande impacto sobre a indústria multibilionária dos produtos de limpeza,"
prevê o professor Paul Dauenhauer, da Universidade de Minnesota, nos EUA.&nbsp;



Soja, coco e milho

Os sabões e detergentes
convencionais são vistos como prejudiciais ao meio ambiente porque são feitos a
partir de combustíveis fósseis. Quando entram na formulação de xampus,
sabonetes ou detergentes, esses sabões são misturados com inúmeros outros
compostos químicos que acabam indo pelo ralo.



A equipe desenvolveu um processo
químico que consegue combinar os ácidos graxos da soja ou do coco com anéis
derivados de açúcares do milho, formando uma molécula surfactante renovável
chamada óleo-furano-tensoativo.&nbsp;



O sabão de origem vegetal também
forma partículas - chamadas micelas - necessárias para a limpeza mesmo em
baixas concentrações, o que reduzirá o impacto ambiental dos produtos de
limpeza, garantem os pesquisadores.



A equipe patenteou o processo de
fabricação do sabão e já está licenciando a tecnologia para uma empresa
privada.



Bibliografia:

Tunable Oleo-Furan Surfactants by Acylation of Renewable Furans
Dae Sung Park, Kristeen E. Joseph, Maura Koehle, Christoph Krumm, Limin Ren,
Jonathan N. Damen, Meera H. Shete, Han Seung Lee, Xiaobing Zuo, Byeongdu Lee,
Wei Fan, Dionisios G. Vlachos, Raul F. Lobo, Michael Tsapatsis, Paul J.
Dauenhauer
ACS Central Science
Vol.: Article ASAP
DOI: 10.1021/acscentsci.6b00208