The formation of ultralow-density microcellular diane-formaldehyde gels and aerogels

The formation of ultralow-density microcellular diane-formaldehyde gels and aerogels Научная публикация

Журнал

Polymer Science, Series B
ISSN: 1555-6123 , E-ISSN: 1560-0904

Вых. Данные

Год: 2016, Том: 58, Номер: 2, Страницы: 173-182 Страниц : 10 DOI: 10.1134/s1560090416020081

Авторы

Sheveleva E.E. ¹ , Pimenov V.G. ¹ , Pikulin I.V. ² , Sakharov A.M. ¹

Организации

1	N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninskii pr. 47, Moscow, 119991 Russia
2	Russian Federal Nuclear Center—All-Russia Research Institute of Experimental Physics, pr. Mira 37, Sarov, Nizhny Novgorod oblast, 607188 Russia

A diane–formaldehyde aerogel is synthesized via a new two-step approach consisting of the sol–gel polycondensation of diane and formaldehyde. The first stage affords individual polymethylol phenols; at the second stage, these are cured in an alkaline solution at 225°С via the introduction of an additional amount of formaldehyde. The diane–formaldehyde gel is isolated for the first time from the initial solution at a minimum possible concentration of gel formation of 1 mg/mL. The aerogel is obtained during supercritical drying of the diane–formaldehyde gel. The density of the ultralow-density microcellular aerogels reaches 10.9 mg/cm3, and their specific surface area amounts to 340–716 m2/g. The features, structures, and properties of the resulting diane–formaldehyde gels are studied.

Sheveleva E.E. , Pimenov V.G. , Pikulin I.V. , Sakharov A.M.
The formation of ultralow-density microcellular diane-formaldehyde gels and aerogels
Polymer Science, Series B. 2016. V.58. N2. P.173-182. DOI: 10.1134/s1560090416020081 WOS Scopus OpenAlex

≡ Web of science:	WOS:000376272900006
≡ Scopus:	2-s2.0-84979642321
≡ OpenAlex:	W2360917005